{"title":"All Products","description":"\u003cp\u003eEvery Free Muscle product in one place: research compounds supplied for laboratory research only (18+), CREATREN creatine, NitraGlyc pre-workout and gym apparel. Every Free Muscle-brand batch is assayed by Janoshik Analytical.\u003c\/p\u003e","products":[{"product_id":"mk-677-ibutamoren-25mg","title":"MK-677 Ibutamoren — 25mg · 60 Capsules","description":"\u003cp\u003e\u003cstrong\u003eMK-677 (Ibutamoren), 25mg × 60 capsules.\u003c\/strong\u003e\u003c\/p\u003e\u003cp\u003eIbutamoren is a growth hormone secretagogue: an agonist at the ghrelin (GHS-R1a) receptor. It has published human trial data, which is unusual in this category, but development as a medicine was never completed and it is \u003cstrong\u003enot authorised as a medicine or a food supplement in the UK or EU\u003c\/strong\u003e. It is on the WADA Prohibited List and is detectable.\u003c\/p\u003e\u003cp\u003eKnown effects reported in trials include increased appetite, water retention and raised blood glucose. We do not publish dosing schedules, cycle lengths or post-cycle protocols for human use.\u003c\/p\u003e\u003cp\u003eWhat we do verify: identity and purity, per batch, by Janoshik Analytical, an independent laboratory we neither own nor control. The batch number is printed on the pack; email it to us and we will send that batch's Certificate of Analysis. You do not need to have bought anything to ask.\u003c\/p\u003e\u003cp\u003e\u003csmall\u003eResearch compounds sold by Free Muscle are supplied for laboratory research use only and are not for human consumption. They are not authorised as medicines by the MHRA, EMA or FDA, are not food supplements, and are sold only to adults aged 18 or over. Nothing on this page is medical or dosing advice.\u003c\/small\u003e\u003c\/p\u003e","brand":"FreeMuscle","offers":[{"title":"Default Title","offer_id":46856631550178,"sku":"10000014","price":59.99,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0772\/3499\/5426\/files\/openart-image_nIMXU6ba_1760816509377_raw.jpg?v=1766262315"},{"product_id":"mk-677-ibutamoren-10mg","title":"Free Muscle MK-677 Ibutamoren — 10mg · 60 Capsules","description":"\u003cp\u003e\u003cstrong\u003eMK-677 (Ibutamoren), 10mg × 60 capsules.\u003c\/strong\u003e\u003c\/p\u003e\u003cp\u003eIbutamoren is a growth hormone secretagogue: an agonist at the ghrelin (GHS-R1a) receptor. It has published human trial data, but development as a medicine was never completed and it is \u003cstrong\u003enot authorised as a medicine or a food supplement in the UK or EU\u003c\/strong\u003e. It is on the WADA Prohibited List and is detectable.\u003c\/p\u003e\u003cp\u003eThe only difference between our 10mg, 12.5mg and 25mg is the amount per capsule. We do not recommend a strength, because that would be dosing advice for a compound sold for research use only.\u003c\/p\u003e\u003cp\u003eIdentity and purity are verified per batch by Janoshik Analytical, an independent laboratory. Certificate of Analysis available on request.\u003c\/p\u003e\u003cp\u003e\u003csmall\u003eResearch compounds sold by Free Muscle are supplied for laboratory research use only and are not for human consumption. They are not authorised as medicines by the MHRA, EMA or FDA, are not food supplements, and are sold only to adults aged 18 or over. Nothing on this page is medical or dosing advice.\u003c\/small\u003e\u003c\/p\u003e","brand":"FreeMuscle","offers":[{"title":"Default Title","offer_id":46856695185634,"sku":"10000013","price":49.99,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0772\/3499\/5426\/files\/openart-image_Z_Qi57Md_1760817219254_raw.jpg?v=1766262333"},{"product_id":"yk-11-10mg","title":"YK-11 — Myostatin Inhibitor · 10mg · 60 Capsules","description":"\u003cp\u003e\u003cstrong\u003eYK-11, 10mg × 60 capsules.\u003c\/strong\u003e\u003c\/p\u003e\u003cp\u003eYK-11 is structurally a steroid, not a true SARM, although it is usually sold alongside them. It is sometimes described as a myostatin-pathway agent; that description rests largely on a single cell-culture study and there is no human data.\u003c\/p\u003e\u003cp\u003eBecause it has a steroidal backbone, androgenic and liver effects cannot be ruled out. It is \u003cstrong\u003enot authorised for human consumption in the UK or EU\u003c\/strong\u003e and is prohibited in sport by WADA.\u003c\/p\u003e\u003cp\u003eIdentity and purity are verified per batch by Janoshik Analytical, an independent laboratory. Certificate of Analysis available on request. We do not publish dosing schedules, cycle lengths or post-cycle protocols for human use.\u003c\/p\u003e\u003cp\u003e\u003csmall\u003eResearch compounds sold by Free Muscle are supplied for laboratory research use only and are not for human consumption. They are not authorised as medicines by the MHRA, EMA or FDA, are not food supplements, and are sold only to adults aged 18 or over. Nothing on this page is medical or dosing advice.\u003c\/small\u003e\u003c\/p\u003e","brand":"FreeMuscle","offers":[{"title":"Default Title","offer_id":46857393144034,"sku":"10000012","price":49.99,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0772\/3499\/5426\/files\/yk_11_10mg_60_capsules.jpg?v=1766262356"},{"product_id":"free-muscle-rad-140-testolone-10mg","title":"RAD-140 Testolone — 10mg · 60 Capsules","description":"\u003cp\u003e\u003cstrong\u003eRAD-140 (Testolone), 10mg × 60 capsules.\u003c\/strong\u003e\u003c\/p\u003e\u003cp\u003eRAD-140 is a selective androgen receptor modulator. It binds androgen receptors with more selectivity for muscle and bone tissue than anabolic steroids do. Preclinical data exists; human efficacy trials for performance do not.\u003c\/p\u003e\u003cp\u003eSARMs have been associated with liver injury and testosterone suppression in published case reports. RAD-140 is \u003cstrong\u003enot authorised for human consumption in the UK or EU\u003c\/strong\u003e and is on the WADA Prohibited List, where it is detectable in standard screening.\u003c\/p\u003e\u003cp\u003eIdentity and purity are verified per batch by Janoshik Analytical, an independent laboratory. Certificate of Analysis available on request. We do not publish dosing schedules, cycle lengths or post-cycle protocols for human use.\u003c\/p\u003e\u003cp\u003e\u003csmall\u003eResearch compounds sold by Free Muscle are supplied for laboratory research use only and are not for human consumption. They are not authorised as medicines by the MHRA, EMA or FDA, are not food supplements, and are sold only to adults aged 18 or over. Nothing on this page is medical or dosing advice.\u003c\/small\u003e\u003c\/p\u003e","brand":"FreeMuscle","offers":[{"title":"Default Title","offer_id":46857401336034,"sku":"10000015","price":49.99,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0772\/3499\/5426\/files\/openart-image_5GqoU6sK_1760820649070_raw_2e570237-2351-490e-a6a5-64bdfb2fd16d.jpg?v=1766262381"},{"product_id":"cardarine-5mg-free-muscle","title":"Cardarine GW-501516 — 5mg · 60 Capsules","description":"\u003cp\u003e\u003cstrong\u003eCardarine (GW-501516), 5mg × 60 capsules.\u003c\/strong\u003e\u003c\/p\u003e\u003cp\u003eCardarine is a PPAR-delta agonist. Clinical development was abandoned after cancers were found at multiple organ sites in animal studies. That is the reason it is not a medicine, and we would rather you knew it before buying than after.\u003c\/p\u003e\u003cp\u003eThere are no completed human efficacy trials. It is \u003cstrong\u003enot authorised for human consumption in the UK or EU\u003c\/strong\u003e and is on the WADA Prohibited List, where it is detectable.\u003c\/p\u003e\u003cp\u003eIdentity and purity are verified per batch by Janoshik Analytical, an independent laboratory. Certificate of Analysis available on request. We do not publish dosing schedules or cycle lengths for human use.\u003c\/p\u003e\u003cp\u003e\u003csmall\u003eResearch compounds sold by Free Muscle are supplied for laboratory research use only and are not for human consumption. They are not authorised as medicines by the MHRA, EMA or FDA, are not food supplements, and are sold only to adults aged 18 or over. Nothing on this page is medical or dosing advice.\u003c\/small\u003e\u003c\/p\u003e","brand":"FreeMuscle","offers":[{"title":"Default Title","offer_id":46857402613986,"sku":"10000011","price":29.99,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0772\/3499\/5426\/files\/openart-image_RQOkrWwu_1760826716832_raw_1.jpg?v=1766262406"},{"product_id":"cardarine-gw-501516-10mg-free-muscle-60-capsules","title":"Cardarine GW-501516 — 10mg · 60 Capsules","description":"\u003cp\u003e\u003cstrong\u003eCardarine (GW-501516), 10mg × 60 capsules.\u003c\/strong\u003e\u003c\/p\u003e\u003cp\u003eCardarine is a PPAR-delta agonist. Clinical development was abandoned after cancers were found at multiple organ sites in animal studies. That is the reason it is not a medicine, and we would rather you knew it before buying than after.\u003c\/p\u003e\u003cp\u003eThere are no completed human efficacy trials. It is \u003cstrong\u003enot authorised for human consumption in the UK or EU\u003c\/strong\u003e and is on the WADA Prohibited List, where it is detectable.\u003c\/p\u003e\u003cp\u003eIdentity and purity are verified per batch by Janoshik Analytical, an independent laboratory. Certificate of Analysis available on request. We do not publish dosing schedules or cycle lengths for human use.\u003c\/p\u003e\u003cp\u003e\u003csmall\u003eResearch compounds sold by Free Muscle are supplied for laboratory research use only and are not for human consumption. They are not authorised as medicines by the MHRA, EMA or FDA, are not food supplements, and are sold only to adults aged 18 or over. Nothing on this page is medical or dosing advice.\u003c\/small\u003e\u003c\/p\u003e","brand":"FreeMuscle","offers":[{"title":"Default Title","offer_id":46857405432034,"sku":"10000010","price":39.99,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0772\/3499\/5426\/files\/openart-image_Oef-QDdF_1760826110182_raw_e832e96d-2ef9-42b1-a8b2-c1f787319c72.jpg?v=1766262431"},{"product_id":"insulin-grow","title":"Insulin Grow — 60 Capsules","description":"\u003cp\u003e\u003cstrong\u003eInsulin Grow, 60 capsules.\u003c\/strong\u003e\u003c\/p\u003e\u003cp\u003eThis is sold under a product name rather than a single established compound name, and there is no clinical literature under that name. The Certificate of Analysis for your batch states what the product actually contains; ask us for it before you buy, not after.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eThe product name references insulin.\u003c\/strong\u003e Insulin used outside medical care is dangerous. Do not use this product, or insulin, for body composition.\u003c\/p\u003e\u003cp\u003eIt is \u003cstrong\u003enot authorised as a medicine or a food supplement in the UK or EU\u003c\/strong\u003e. Insulin and insulin-mimetics are on the WADA Prohibited List.\u003c\/p\u003e\u003cp\u003eIdentity and purity are verified per batch by Janoshik Analytical, an independent laboratory.\u003c\/p\u003e\u003cp\u003e\u003csmall\u003eResearch compounds sold by Free Muscle are supplied for laboratory research use only and are not for human consumption. They are not authorised as medicines by the MHRA, EMA or FDA, are not food supplements, and are sold only to adults aged 18 or over. Nothing on this page is medical or dosing advice.\u003c\/small\u003e\u003c\/p\u003e","brand":"FreeMuscle","offers":[{"title":"Default Title","offer_id":46857407758562,"sku":"10000009","price":69.99,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0772\/3499\/5426\/files\/openart-image_ph-BIA-i_1760823504687_raw_1.jpg?v=1766262453"},{"product_id":"hgh-human-growth-hormone-somatropin-free-muscle","title":"HGH — Somatropin · Human Growth Hormone","description":"\u003cp\u003e\u003cstrong\u003eHGH (Somatropin) — 60 capsules.\u003c\/strong\u003e\u003c\/p\u003e\u003cp\u003eSomatropin is recombinant human growth hormone. It is \u003cstrong\u003ea prescription-only medicine in the United Kingdom\u003c\/strong\u003e. Supplying it without a prescription is an offence under the Human Medicines Regulations 2012.\u003c\/p\u003e\u003cp\u003eIt is extensively studied — as a licensed medicine, for specific diagnosed conditions, under medical supervision. Misuse is associated with acromegaly, insulin resistance, joint pain, carpal tunnel syndrome and cardiac effects. Growth hormone is on the WADA Prohibited List.\u003c\/p\u003e\u003cp\u003eWhere growth hormone is needed for a diagnosed condition, that is a conversation with a doctor, and it is the only route we would point to.\u003c\/p\u003e\u003cp\u003eIdentity and purity are verified per batch by Janoshik Analytical, an independent laboratory. Certificate of Analysis available on request.\u003c\/p\u003e\u003cp\u003e\u003csmall\u003e\u003cstrong\u003eResearch use only.\u003c\/strong\u003e Not intended to diagnose, treat, cure or prevent any disease. Not for human consumption.\u003c\/small\u003e\u003c\/p\u003e","brand":"FreeMuscle","offers":[{"title":"Default Title","offer_id":46857408151778,"sku":"10000008","price":69.99,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0772\/3499\/5426\/files\/openart-image_NsSijAl-_1760822939653_raw.jpg?v=1760823218"},{"product_id":"christmas-bulking-bundle","title":"Research Bundle — MK-677 + RAD-140 + YK-11","description":"\u003cp\u003e\u003cstrong\u003eThree bottles, 180 capsules: MK-677, RAD-140 and YK-11.\u003c\/strong\u003e\u003c\/p\u003e\u003cp\u003eMK-677 is a ghrelin-receptor secretagogue, RAD-140 is a SARM, and YK-11 is a steroidal compound. Only MK-677 has published human trial data; the other two do not.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhy buy the bundle? Price, and nothing else.\u003c\/strong\u003e It is the same three products at a lower total than buying them separately. We are not claiming they work better together.\u003c\/p\u003e\u003cp\u003eBuying compounds together does not make them safer; each carries its own risks, set out on its own page. \u003cstrong\u003eNone of the three is authorised for human consumption in the UK or EU\u003c\/strong\u003e, and all three are on the WADA Prohibited List.\u003c\/p\u003e\u003cp\u003eEvery batch is assayed by Janoshik Analytical, an independent laboratory. Certificates of Analysis available on request.\u003c\/p\u003e\u003cp\u003e\u003csmall\u003eResearch compounds sold by Free Muscle are supplied for laboratory research use only and are not for human consumption. They are not authorised as medicines by the MHRA, EMA or FDA, are not food supplements, and are sold only to adults aged 18 or over. Nothing on this page is medical or dosing advice.\u003c\/small\u003e\u003c\/p\u003e","brand":"FreeMuscle","offers":[{"title":"Default Title","offer_id":46920043462882,"sku":"BUNDLE-XMAS-001","price":100.0,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0772\/3499\/5426\/files\/IMG-1809.jpg?v=1766262497"},{"product_id":"pct-post-cycle-therapy-free-muscle","title":"PCT — Post Cycle Therapy · 60 Capsules","description":"\u003cp\u003e\u003cstrong\u003ePCT, 60 capsules.\u003c\/strong\u003e\u003c\/p\u003e\u003cp\u003eThis is sold under a product name rather than a single established compound name, and there is no clinical literature under that name. The Certificate of Analysis for your batch states what it contains.\u003c\/p\u003e\u003cp\u003eA capsule sold under this product name is not a substitute for medical care. Hormone suppression is diagnosed with a blood test and managed by a clinician, not with a capsule bought online. We make no claim about any effect on testosterone, because we cannot know that.\u003c\/p\u003e\u003cp\u003eIt is \u003cstrong\u003enot authorised as a medicine in the UK or EU\u003c\/strong\u003e. Several compounds used in post-cycle protocols are on the WADA Prohibited List.\u003c\/p\u003e\u003cp\u003eIdentity and purity are verified per batch by Janoshik Analytical, an independent laboratory.\u003c\/p\u003e\u003cp\u003e\u003csmall\u003eResearch compounds sold by Free Muscle are supplied for laboratory research use only and are not for human consumption. They are not authorised as medicines by the MHRA, EMA or FDA, are not food supplements, and are sold only to adults aged 18 or over. Nothing on this page is medical or dosing advice.\u003c\/small\u003e\u003c\/p\u003e","brand":"FreeMuscle","offers":[{"title":"Default Title","offer_id":46945527824610,"sku":"10000007","price":39.99,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0772\/3499\/5426\/files\/openart-image_K_Bb8qTy_1760825260679_raw_1.jpg?v=1766262503"},{"product_id":"enclomiphene-25mg-60-capsules-free-muscle","title":"Enclomiphene — 25mg · 60 Capsules","description":"\u003cp\u003e\u003cstrong\u003eEnclomiphene, 25mg × 60 capsules.\u003c\/strong\u003e\u003c\/p\u003e\u003cp\u003eEnclomiphene is a selective oestrogen receptor modulator, an isomer of clomifene that acts at oestrogen receptors in the hypothalamus. It has been studied in clinical trials but is \u003cstrong\u003enot authorised as a medicine or a food supplement\u003c\/strong\u003e in the UK or EU.\u003c\/p\u003e\u003cp\u003eIt acts directly on the endocrine axis. Use without blood work and clinical monitoring is not something we will guide you through, and we will not supply a protocol. Selective oestrogen receptor modulators are on the WADA Prohibited List.\u003c\/p\u003e\u003cp\u003eIdentity and purity are verified per batch by Janoshik Analytical, an independent laboratory. Certificate of Analysis available on request.\u003c\/p\u003e\u003cp\u003e\u003csmall\u003eResearch compounds sold by Free Muscle are supplied for laboratory research use only and are not for human consumption. They are not authorised as medicines by the MHRA, EMA or FDA, are not food supplements, and are sold only to adults aged 18 or over. Nothing on this page is medical or dosing advice.\u003c\/small\u003e\u003c\/p\u003e","brand":"FreeMuscle","offers":[{"title":"Default Title","offer_id":46945548206306,"sku":"10000006","price":59.0,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0772\/3499\/5426\/files\/openart-image_wf-gvHJY_1760827666535_raw_1.jpg?v=1766262540"},{"product_id":"bpc-150-1000mg-60-capsules-free-muscle","title":"BPC-150 — 1000mg · 60 Capsules","description":"\u003cp\u003e\u003cstrong\u003eBPC-150, 1000mg × 60 capsules.\u003c\/strong\u003e\u003c\/p\u003e\u003cp\u003eMarketed as a variant of BPC-157, a sequence derived from a gastric protein. Human clinical evidence is essentially absent; most citations are animal studies. Long-term safety in humans has not been established.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eIt is a capsule, and peptides taken by mouth are largely broken down by digestive enzymes before absorption.\u003c\/strong\u003e That is why clinical work on this class uses injection. We are not going to claim a capsule matches that.\u003c\/p\u003e\u003cp\u003eIt is \u003cstrong\u003enot authorised as a medicine or a food supplement in the UK or EU\u003c\/strong\u003e. Check the current WADA Prohibited List before buying if you compete in a tested sport.\u003c\/p\u003e\u003cp\u003eIdentity and purity are verified per batch by Janoshik Analytical, an independent laboratory. Certificate of Analysis available on request.\u003c\/p\u003e\u003cp\u003e\u003csmall\u003eResearch compounds sold by Free Muscle are supplied for laboratory research use only and are not for human consumption. They are not authorised as medicines by the MHRA, EMA or FDA, are not food supplements, and are sold only to adults aged 18 or over. Nothing on this page is medical or dosing advice.\u003c\/small\u003e\u003c\/p\u003e","brand":"FreeMuscle","offers":[{"title":"Default Title","offer_id":46945555022050,"sku":"10000005","price":39.99,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0772\/3499\/5426\/files\/openart-image_6tJIz7LT_1760828909662_raw.jpg?v=1766262551"},{"product_id":"tb-500-thymosin-beta-4-peptide-free-muscle","title":"TB-500 — Thymosin Beta-4 · 60 Capsules","description":"\u003cp\u003e\u003cstrong\u003eTB-500 (Thymosin Beta-4), 60 capsules.\u003c\/strong\u003e\u003c\/p\u003e\u003cp\u003eA synthetic fragment related to thymosin beta-4, a protein involved in cell migration and repair. Human clinical evidence is limited; most citations are animal or in-vitro work. Long-term safety in humans has not been established.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eIt is a capsule, and peptides taken by mouth are largely broken down by digestive enzymes before absorption.\u003c\/strong\u003e That is why clinical work on this class uses injection. We are not going to claim a capsule matches that.\u003c\/p\u003e\u003cp\u003eIt is \u003cstrong\u003enot authorised as a medicine or a food supplement in the UK or EU\u003c\/strong\u003e, and thymosin beta-4 is on the WADA Prohibited List.\u003c\/p\u003e\u003cp\u003eIdentity and purity are verified per batch by Janoshik Analytical, an independent laboratory. Certificate of Analysis available on request.\u003c\/p\u003e\u003cp\u003e\u003csmall\u003eResearch compounds sold by Free Muscle are supplied for laboratory research use only and are not for human consumption. They are not authorised as medicines by the MHRA, EMA or FDA, are not food supplements, and are sold only to adults aged 18 or over. Nothing on this page is medical or dosing advice.\u003c\/small\u003e\u003c\/p\u003e","brand":"FreeMuscle","offers":[{"title":"Default Title","offer_id":46946620735714,"sku":"10000004","price":39.99,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0772\/3499\/5426\/files\/openart-image_XRygvY8P_1760830816393_raw.jpg?v=1766262570"},{"product_id":"creatren","title":"CREATREN — Creatine Monohydrate + Taurine, 90 Capsules","description":"\u003cp\u003e\u003cstrong\u003e90 capsules of creatine monohydrate with taurine. The labelled serving is 3 capsules, giving 2,000 mg.\u003c\/strong\u003e\u003c\/p\u003e\u003cp\u003eCapsules, so there is nothing to measure or mix. Every batch is assayed by Janoshik Analytical, an independent laboratory we neither own nor control. The batch number is printed on your pot; ask us for that batch's Certificate of Analysis and we will send it.\u003c\/p\u003e\u003ch3\u003eDirections\u003c\/h3\u003e\u003cp\u003eCREATREN is a food supplement. Follow the daily portion and the directions on the label and do not exceed it.\u003c\/p\u003e\u003ch3\u003eGood to know\u003c\/h3\u003e\u003cp\u003eSome people see a change on the scale when they start taking creatine; it varies from person to person.\u003c\/p\u003e\u003cp\u003e30-day returns on unopened products: see our \u003ca href=\"\/en-ro\/pages\/guarantee\"\u003ereturns page\u003c\/a\u003e.\u003c\/p\u003e\u003cp\u003eFree tracked UK delivery on every order. \u003ca href=\"\/en-ro\/pages\/lab-tests\"\u003eSee how we test\u003c\/a\u003e.\u003c\/p\u003e","brand":"FreeMuscle","offers":[{"title":"Default Title","offer_id":46946659565794,"sku":"10000002","price":39.99,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0772\/3499\/5426\/files\/openart-image_9iUyGpOb_1760899876784_raw_1.jpg?v=1766262588"},{"product_id":"mk-677-ibutamoren-12-5mg","title":"Thoroughbred MK-677 Ibutamoren — 12.5mg · 60 Capsules","description":"\u003cp\u003e\u003cstrong\u003eMK-677 (Ibutamoren), 12.5mg × 60 capsules.\u003c\/strong\u003e\u003c\/p\u003e\u003cp\u003eIbutamoren is a growth hormone secretagogue: an agonist at the ghrelin (GHS-R1a) receptor. It has published human trial data, but development as a medicine was never completed and it is \u003cstrong\u003enot authorised as a medicine or a food supplement in the UK or EU\u003c\/strong\u003e. It is on the WADA Prohibited List and is detectable.\u003c\/p\u003e\u003cp\u003eThe only difference between our 10mg, 12.5mg and 25mg is the amount per capsule. We do not recommend a strength, because that would be dosing advice for a compound sold for research use only.\u003c\/p\u003e\u003cp\u003eIdentity and purity are verified per batch by Janoshik Analytical, an independent laboratory. Certificate of Analysis available on request.\u003c\/p\u003e\u003cp\u003e\u003csmall\u003eResearch compounds sold by Free Muscle are supplied for laboratory research use only and are not for human consumption. They are not authorised as medicines by the MHRA, EMA or FDA, are not food supplements, and are sold only to adults aged 18 or over. Nothing on this page is medical or dosing advice.\u003c\/small\u003e\u003c\/p\u003e","brand":"FreeMuscle","offers":[{"title":"Default Title","offer_id":46961071292642,"sku":"10000001","price":44.99,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0772\/3499\/5426\/files\/mk.webp?v=1766262843"},{"product_id":"free-muscle-tshirt","title":"Free Muscle T-Shirt","description":"\u003cp\u003eFree Muscle T-Shirt: an athletic-fit cotton gym t-shirt with the Free Muscle bull logo. Tapered through the body and shoulders, in soft, breathable fabric, with a print made to stay crisp wash after wash and reinforced stitching for repeated training. Five sizes, XS, S, M, L and XL. The cut is athletic: order your usual size, or size up for a relaxed fit. Care: machine wash cold at 30 degrees, inside out, and hang to dry to protect the print. Colours may vary slightly from screen to garment. Free, discreet UK delivery. Returns are covered by our refund policy.\u003c\/p\u003e","brand":"FreeMuscle","offers":[{"title":"XS","offer_id":47891314049250,"sku":"FM-TS-XS","price":19.99,"currency_code":"GBP","in_stock":true},{"title":"S","offer_id":47891314082018,"sku":"FM-TS-S","price":19.99,"currency_code":"GBP","in_stock":true},{"title":"M","offer_id":47891314114786,"sku":"FM-TS-M","price":19.99,"currency_code":"GBP","in_stock":true},{"title":"L","offer_id":47891314147554,"sku":"FM-TS-L","price":19.99,"currency_code":"GBP","in_stock":true},{"title":"XL","offer_id":47891314180322,"sku":"FM-TS-XL","price":19.99,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0772\/3499\/5426\/files\/openart-image_-pELPocU_1761593594637_raw.jpg?v=1766262602"},{"product_id":"free-muscle-gym-hoodie","title":"Free Muscle Gym Hoodie","description":"\u003cp\u003eFree Muscle Gym Hoodie: a heavyweight hoodie with a cotton-blend shell and a brushed-fleece interior, with bull logo branding. Athletic fit rather than boxy, with reinforced seams and a print made to last wash after wash. Five sizes, XS, S, M, L and XL. Order your usual size, or size up for extra room for layering. Suited to warm-ups, between sets and rest days. Care: machine wash cold at 30 degrees, inside out, and hang to dry to protect the fleece and print. Free, discreet UK delivery. Unworn items with tags can be returned under our returns policy.\u003c\/p\u003e","brand":"FreeMuscle","offers":[{"title":"XS","offer_id":47891314213090,"sku":"FM-GH-XS","price":29.99,"currency_code":"GBP","in_stock":true},{"title":"S","offer_id":47891314245858,"sku":"FM-GH-S","price":29.99,"currency_code":"GBP","in_stock":true},{"title":"M","offer_id":47891314278626,"sku":"FM-GH-M","price":29.99,"currency_code":"GBP","in_stock":true},{"title":"L","offer_id":47891314311394,"sku":"FM-GH-L","price":29.99,"currency_code":"GBP","in_stock":true},{"title":"XL","offer_id":47891314344162,"sku":"FM-GH-XL","price":29.99,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0772\/3499\/5426\/files\/openart-image_jQLnV-8m_1761594675207_raw.jpg?v=1766262633"},{"product_id":"free-muscle-gym-shorts","title":"Free Muscle Gym Shorts","description":"\u003cp\u003eFree Muscle Gym Shorts: lightweight training shorts in quick-dry, four-way-stretch fabric, with the Free Muscle bull logo. Zip side pockets hold a phone and keys, an elastic waist with adjustable drawcord stays put, and the mid length suits lifting, running and everyday wear. Reinforced seams for heavy training and frequent washing. Five sizes, XS, S, M, L and XL, true to size with the drawcord for fine-tuning. Care: machine wash cold at 30 degrees and hang to dry. Free, discreet UK delivery.\u003c\/p\u003e","brand":"FreeMuscle","offers":[{"title":"XS","offer_id":47891314376930,"sku":"FM-GS-XS","price":19.99,"currency_code":"GBP","in_stock":true},{"title":"S","offer_id":47891314409698,"sku":"FM-GS-S","price":19.99,"currency_code":"GBP","in_stock":true},{"title":"M","offer_id":47891314442466,"sku":"FM-GS-M","price":19.99,"currency_code":"GBP","in_stock":true},{"title":"L","offer_id":47891314475234,"sku":"FM-GS-L","price":19.99,"currency_code":"GBP","in_stock":true},{"title":"XL","offer_id":47891314508002,"sku":"FM-GS-XL","price":19.99,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0772\/3499\/5426\/files\/openart-image_l_ibjqWX_1761595989244_raw.jpg?v=1766262662"},{"product_id":"free-muscle-cap","title":"Free Muscle Cap","description":"\u003cp\u003eFree Muscle Cap: a structured, breathable embroidered cap with a raised Free Muscle bull emblem on the front, not a flat print. A rear adjuster fine-tunes the fit within each size band. Two sizes: S\/M fits most heads, L\/XL suits a larger head or a looser feel. Quality stitching made for sweat, washes and daily wear. Care: spot clean to protect the structure and embroidery. Colours may vary slightly from screen to garment. Free, discreet UK delivery.\u003c\/p\u003e","brand":"FreeMuscle","offers":[{"title":"S\/M","offer_id":47891314540770,"sku":"FM-CAP-SM","price":14.99,"currency_code":"GBP","in_stock":true},{"title":"L\/XL","offer_id":47891314573538,"sku":"FM-CAP-LXL","price":14.99,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0772\/3499\/5426\/files\/openart-image_YloYXtoc_1761596168954_raw.jpg?v=1766262681"},{"product_id":"free-muscle-womens-seamless-set-quality-activewear","title":"Women’s Seamless Set (Leggings + Sports Bra)","description":"\u003cp\u003eFree Muscle Women's Seamless Set: a two-piece matching set of seamless leggings and sports bra. High-density seamless knit described as squat-proof and opaque at full stretch, with four-way stretch, sweat-wicking breathable fabric, contour panelling and a supportive high waistband. Seamless construction to reduce chafing. Five sizes, XS, S, M, L and XL, high-stretch: most find their usual size right, and between sizes you can size down for extra compression. Care: machine wash cold at 30 degrees, inside out, and hang to dry to preserve the stretch. Free, discreet UK delivery.\u003c\/p\u003e","brand":"FreeMuscle","offers":[{"title":"XS","offer_id":47891314606306,"sku":"FM-WS-XS","price":39.99,"currency_code":"GBP","in_stock":true},{"title":"S","offer_id":47891314639074,"sku":"FM-WS-S","price":39.99,"currency_code":"GBP","in_stock":true},{"title":"M","offer_id":47891314671842,"sku":"FM-WS-M","price":39.99,"currency_code":"GBP","in_stock":true},{"title":"L","offer_id":47891314704610,"sku":"FM-WS-L","price":39.99,"currency_code":"GBP","in_stock":true},{"title":"XL","offer_id":47891314737378,"sku":"FM-WS-XL","price":39.99,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0772\/3499\/5426\/files\/openart-image_M-gP7Fyp_1761596662744_raw.jpg?v=1766262692"},{"product_id":"mk-777-acetamoren-bioreactive-series","title":"MK-777 (Acetamoren) — Bioreactive Series","description":"\u003cp\u003e\u003cstrong\u003eMK-777 (Acetamoren), Bioreactive Series.\u003c\/strong\u003e\u003c\/p\u003e\u003cp\u003e\"MK-777 (Acetamoren)\" is Free Muscle's own product designation for a growth hormone secretagogue acting at the GHS-R1a (ghrelin) receptor. It is not a name you will find in the published pharmacological literature, and there are no human clinical trials under that designation. If published research matters to you, MK-677 (ibutamoren) is the compound in this class that has it.\u003c\/p\u003e\u003cp\u003eIt is \u003cstrong\u003enot authorised as a medicine or a food supplement in the UK or EU\u003c\/strong\u003e, and growth hormone secretagogues are on the WADA Prohibited List.\u003c\/p\u003e\u003cp\u003eIdentity and purity are verified per batch by Janoshik Analytical, an independent laboratory. Certificate of Analysis available on request. We do not publish dosing schedules or post-cycle protocols for human use.\u003c\/p\u003e\u003cp\u003e\u003csmall\u003eResearch compounds sold by Free Muscle are supplied for laboratory research use only and are not for human consumption. They are not authorised as medicines by the MHRA, EMA or FDA, are not food supplements, and are sold only to adults aged 18 or over. Nothing on this page is medical or dosing advice.\u003c\/small\u003e\u003c\/p\u003e","brand":"FreeMuscle","offers":[{"title":"Default Title","offer_id":47040793280738,"sku":"10000003","price":69.99,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0772\/3499\/5426\/files\/openart-image_qYBx60sy_1763246601208_raw.jpg?v=1766262710"},{"product_id":"rad-150-tlb-150-bioreactive-series","title":"RAD-150 (TLB-150) — Bioreactive Series","description":"\u003cp\u003e\u003cstrong\u003eRAD-150 (TLB-150), Bioreactive Series.\u003c\/strong\u003e\u003c\/p\u003e\u003cp\u003eRAD-150 is a benzoate-ester form of RAD-140 (Testolone), a selective androgen receptor modulator. A benzoate ester generally slows release of the parent compound; that is a chemistry property, not a promised outcome. Neither compound has the clinical data to support a comparison of human results, and we are not going to invent one.\u003c\/p\u003e\u003cp\u003eSARMs have been associated with liver injury and testosterone suppression in published case reports. RAD-150 is \u003cstrong\u003enot authorised for human consumption in the UK or EU\u003c\/strong\u003e and is prohibited in sport by WADA.\u003c\/p\u003e\u003cp\u003eIdentity and purity are verified per batch by Janoshik Analytical, an independent laboratory. Certificate of Analysis available on request.\u003c\/p\u003e\u003cp\u003e\u003csmall\u003eResearch compounds sold by Free Muscle are supplied for laboratory research use only and are not for human consumption. They are not authorised as medicines by the MHRA, EMA or FDA, are not food supplements, and are sold only to adults aged 18 or over. Nothing on this page is medical or dosing advice.\u003c\/small\u003e\u003c\/p\u003e","brand":"FreeMuscle","offers":[{"title":"Default Title","offer_id":47040801865954,"sku":"10000000","price":69.99,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0772\/3499\/5426\/files\/IMG-2551.jpg?v=1766262716"},{"product_id":"nitraglyc-bioreactive-series-nitrosigine-glycerol","title":"NitraGlyc — Stimulant-Free Pump Pre-Workout · 60 Capsules","description":"\u003cp\u003e\u003cstrong\u003eStimulant-free pre-workout. 60 capsules.\u003c\/strong\u003e\u003c\/p\u003e\u003cp\u003eNitrosigine (inositol-stabilised arginine silicate) and glycerol, two named ingredients in one capsule, with no caffeine or other stimulants.\u003c\/p\u003e\u003ch3\u003eDirections\u003c\/h3\u003e\u003cp\u003eNitraGlyc is a food supplement. Follow the daily portion and the directions on the label and do not exceed it.\u003c\/p\u003e\u003ch3\u003eGood to know\u003c\/h3\u003e\u003cp\u003eNo health claim is authorised for Nitrosigine or glycerol, and we make none.\u003c\/p\u003e\u003cp\u003eEvery batch is assayed by Janoshik Analytical, an independent laboratory. The batch number is printed on the pack, and the certificate for that batch is sent by email on request: \u003ca href=\"\/en-ro\/pages\/lab-tests\"\u003esee how we test\u003c\/a\u003e.\u003c\/p\u003e\u003cp\u003eFree tracked UK delivery on every order.\u003c\/p\u003e","brand":"FreeMuscle","offers":[{"title":"Default Title","offer_id":47042345205986,"sku":"28876574","price":59.99,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0772\/3499\/5426\/files\/openart-image_B6u2TBaN_1763338638030_raw.jpg?v=1766262723"},{"product_id":"bioreactive-bundle","title":"Bioreactive Bundle — MK-777 + RAD-150 + NitraGlyc","description":"\u003cp\u003e\u003cstrong\u003eBioreactive Bundle: MK-777 + RAD-150 + NitraGlyc. Three bottles, 180 capsules.\u003c\/strong\u003e\u003c\/p\u003e\u003cp\u003eOne bottle each of MK-777 (a ghrelin-receptor secretagogue), RAD-150 (a SARM) and NitraGlyc (a stimulant-free pre-workout). Two of the three have no completed human efficacy trials; NitraGlyc is an ordinary sports supplement.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhy buy the bundle? Price, and nothing else.\u003c\/strong\u003e It is the same three products at a lower total than buying them separately. We are not claiming they work better together.\u003c\/p\u003e\u003cp\u003eBuying compounds together does not make them safer; each carries its own risks, set out on its own page. MK-777 and RAD-150 are \u003cstrong\u003enot authorised for human consumption in the UK or EU\u003c\/strong\u003e, and both classes are on the WADA Prohibited List.\u003c\/p\u003e\u003cp\u003eEvery batch is assayed by Janoshik Analytical, an independent laboratory. Certificates of Analysis available on request.\u003c\/p\u003e\u003cp\u003e\u003csmall\u003eResearch compounds sold by Free Muscle are supplied for laboratory research use only and are not for human consumption. They are not authorised as medicines by the MHRA, EMA or FDA, are not food supplements, and are sold only to adults aged 18 or over. NitraGlyc, also in this bundle, is a food supplement, not a research compound. Nothing on this page is medical or dosing advice.\u003c\/small\u003e\u003c\/p\u003e","brand":"FreeMuscle","offers":[{"title":"Default Title","offer_id":47042968584418,"sku":"10000017","price":150.0,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0772\/3499\/5426\/files\/IMG-2582.jpg?v=1766262729"},{"product_id":"retatrutide","title":"Retatrutide — Research Peptide","description":"\u003cp\u003e\u003cstrong\u003eRetatrutide (LY3437943), research peptide.\u003c\/strong\u003e\u003c\/p\u003e\u003cp\u003eRetatrutide is an investigational triple agonist at the GIP, GLP-1 and glucagon receptors. \u003cstrong\u003eIt is not approved as a medicine by any regulator in the world\u003c\/strong\u003e, not the MHRA, not the EMA, not the FDA. Phase 2 obesity results were published in 2023; Phase 3 trials are still running. Nothing is finished.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eThe published trials used subcutaneous injection. This product is a capsule\u003c\/strong\u003e, and peptides taken by mouth are largely broken down in the gut. We are not going to claim an oral capsule reproduces trial results.\u003c\/p\u003e\u003cp\u003eTrial participants reported nausea, vomiting, diarrhoea and constipation, with dose escalation managed by clinicians throughout.\u003c\/p\u003e\u003cp\u003eWeight-management treatment is a matter for a doctor. There are licensed medicines with approved safety profiles and clinical supervision. This is not one of them and we are not selling it as one.\u003c\/p\u003e\u003cp\u003eIdentity and purity are verified per batch by Janoshik Analytical, an independent laboratory.\u003c\/p\u003e\u003cp\u003e\u003csmall\u003eResearch compounds sold by Free Muscle are supplied for laboratory research use only and are not for human consumption. They are not authorised as medicines by the MHRA, EMA or FDA, are not food supplements, and are sold only to adults aged 18 or over. Nothing on this page is medical or dosing advice.\u003c\/small\u003e\u003c\/p\u003e","brand":"FreeMuscle","offers":[{"title":"Default Title","offer_id":47171527639266,"sku":"28876573","price":89.99,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0772\/3499\/5426\/files\/IMG-2901.jpg?v=1766262736"},{"product_id":"ipamorelin","title":"Ipamorelin — Research Peptide","description":"\u003cp\u003e\u003cstrong\u003eIpamorelin, 60 capsules.\u003c\/strong\u003e\u003c\/p\u003e\u003cp\u003eIpamorelin is a selective agonist at the ghrelin (GHS-R1a) receptor. It was studied in early clinical work and development was discontinued. Effects on glucose regulation and long-term safety are not established.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eIt is a capsule, and peptides taken by mouth are largely broken down by digestive enzymes before absorption.\u003c\/strong\u003e That is why clinical work on this class uses injection. We are not going to claim a capsule matches that.\u003c\/p\u003e\u003cp\u003eIt is \u003cstrong\u003enot authorised as a medicine or a food supplement in the UK or EU\u003c\/strong\u003e, and growth hormone secretagogues are on the WADA Prohibited List.\u003c\/p\u003e\u003cp\u003eIdentity and purity are verified per batch by Janoshik Analytical, an independent laboratory. Certificate of Analysis available on request.\u003c\/p\u003e\u003cp\u003e\u003csmall\u003eResearch compounds sold by Free Muscle are supplied for laboratory research use only and are not for human consumption. They are not authorised as medicines by the MHRA, EMA or FDA, are not food supplements, and are sold only to adults aged 18 or over. Nothing on this page is medical or dosing advice.\u003c\/small\u003e\u003c\/p\u003e","brand":"FreeMuscle","offers":[{"title":"Default Title","offer_id":47171533635810,"sku":"25506679","price":29.99,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0772\/3499\/5426\/files\/IMG-2904.jpg?v=1766262743"},{"product_id":"igf-1-lr3","title":"IGF-1 LR3 — Growth Factor Peptide","description":"\u003cp\u003e\u003cstrong\u003eIGF-1 LR3, 60 capsules.\u003c\/strong\u003e\u003c\/p\u003e\u003cp\u003eThe long-arginine-3 analogue of insulin-like growth factor 1. It is used as a laboratory reagent in cell culture and has not been studied as a consumer product.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eThis is not a benign molecule, and it is sold here only as a laboratory reagent.\u003c\/strong\u003e Peptides taken by mouth are also largely broken down by digestive enzymes before absorption.\u003c\/p\u003e\u003cp\u003eIt is \u003cstrong\u003enot authorised as a medicine or a food supplement in the UK or EU\u003c\/strong\u003e. IGF-1 and its analogues are on the WADA Prohibited List.\u003c\/p\u003e\u003cp\u003eIdentity and purity are verified per batch by Janoshik Analytical, an independent laboratory. Certificate of Analysis available on request.\u003c\/p\u003e\u003cp\u003e\u003csmall\u003eResearch compounds sold by Free Muscle are supplied for laboratory research use only and are not for human consumption. They are not authorised as medicines by the MHRA, EMA or FDA, are not food supplements, and are sold only to adults aged 18 or over. Nothing on this page is medical or dosing advice.\u003c\/small\u003e\u003c\/p\u003e","brand":"FreeMuscle","offers":[{"title":"Default Title","offer_id":47171569221858,"sku":"25506678","price":39.99,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0772\/3499\/5426\/files\/IMG-2906.jpg?v=1766262748"},{"product_id":"biolab-bpc-157-hcl-200-mcg-60-caps","title":"BioLab BPC-157 HCl 200 mcg, 60 caps","description":"\u003cp\u003e\u003cstrong\u003eBioLab BPC-157 HCl 200 mcg, 60 caps\u003c\/strong\u003e is a BioLab listing of BPC-157, labelled at 200 mcg (0.2 mg) per capsule, 60 capsules per pack. It is supplied through the \u003ca href=\"\/en-ro\/pages\/muscle-market\"\u003eMuscle Market\u003c\/a\u003e range for laboratory research only, is not for human consumption, and is sold to adults aged 18 and over. Below: what the published research on BPC-157 reports, what the label documents, how the UK rules and sport rules apply, and how batch certificates are handled for BioLab products.\u003c\/p\u003e\n\u003ch2\u003eAbout BPC-157\u003c\/h2\u003e\n\u003cp\u003eBPC-157, also written BPC157 and sometimes called body protection compound or pentadecapeptide BPC 157, is a synthetic chain of fifteen amino acids. Its sequence is a partial fragment of a protein identified in human gastric juice. In the laboratory it has been studied almost entirely in rodents and cell cultures, where research groups have examined models of tendon, ligament, muscle, gut and blood vessel injury and have described involvement of nitric oxide signalling and angiogenic growth factor pathways.\u003c\/p\u003e\n\u003cp\u003eThe \"HCl\" in this product name means the peptide is described as a hydrochloride salt. Peptides usually leave purification paired with a counter-ion such as acetate or chloride. The counter-ion adds weight without adding peptide, so a quoted mass can refer either to the salt or to the peptide within it. BioLab does not say which basis its 200 mcg figure uses. The identifiers below, taken from PubChem, describe the parent peptide.\u003c\/p\u003e\n\u003ctable\u003e\n\u003cthead\u003e\u003ctr\u003e\n\u003cth\u003eProperty\u003c\/th\u003e\n\u003cth\u003eValue for the parent peptide\u003c\/th\u003e\n\u003c\/tr\u003e\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003eAmino acid sequence\u003c\/td\u003e\n\u003ctd\u003eGEPPPGKPADDAGLV\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMolecular formula\u003c\/td\u003e\n\u003ctd\u003eC62H98N16O22\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMolecular weight\u003c\/td\u003e\n\u003ctd\u003e1419.5 g\/mol\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eCAS number\u003c\/td\u003e\n\u003ctd\u003e137525-51-0\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003ePubChem CID\u003c\/td\u003e\n\u003ctd\u003e9941957\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOther names on record\u003c\/td\u003e\n\u003ctd\u003eBepecin, PL-10, PLD-116\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003ch2\u003eWhat the published research reports\u003c\/h2\u003e\n\u003cp\u003eA 2011 laboratory study from Taiwan used tendon explants and fibroblasts taken from rat Achilles tendon. BPC-157 was associated with faster outgrowth of cells from the explants, better survival of cells under oxidative stress and more cell migration, although it did not directly increase cell proliferation. The authors linked these effects to the FAK-paxillin signalling pathway; the work was confined to cells and tissue in culture. A 2016 review by the Zagreb group that has produced most of the BPC-157 literature summarised its own brain-gut axis work in animals; it is a review of that group's research rather than independent confirmation.\u003c\/p\u003e\n\u003cp\u003eThe most complete independent appraisal so far is a 2025 systematic review from Case Western Reserve University, which screened 544 records published between 1993 and 2024 and kept 36 studies. Thirty-five were preclinical. The single clinical paper was a retrospective case series in which 7 of 12 patients given an injection into the knee for chronic pain reported relief lasting more than six months; it had no control group, and it concerned injection, not capsules. The reviewers graded the whole body of evidence at levels IV and V, the lowest tiers, found no clinical data on adverse effects in humans, and flagged unregulated manufacture and contamination as hazards.\u003c\/p\u003e\n\u003cp\u003eThe limitations therefore matter more than any single finding: almost all of the evidence comes from a single research network, no randomised controlled trial in humans has been published in full, and BPC-157 has never been authorised as a medicine anywhere. Nothing above is a claim about this product. A longer account is in \u003ca href=\"\/en-ro\/blogs\/news\/bpc-157-what-research-shows\"\u003eBPC-157: what the research actually shows, and what it does not\u003c\/a\u003e.\u003c\/p\u003e\n\u003ch2\u003eThis listing\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003eBrand: \u003ca href=\"\/en-ro\/collections\/brand-biolab\"\u003eBioLab\u003c\/a\u003e\n\u003c\/li\u003e\n\u003cli\u003eCompound: BPC-157, labelled as the hydrochloride (HCl)\u003c\/li\u003e\n\u003cli\u003eForm: Capsules\u003c\/li\u003e\n\u003cli\u003ePack size: 60 capsules\u003c\/li\u003e\n\u003cli\u003eStrength: 200 mcg (0.2 mg) per capsule, as printed on the BioLab label\u003c\/li\u003e\n\u003cli\u003eTotal in pack: 12 mg (200 mcg x 60 capsules)\u003c\/li\u003e\n\u003cli\u003eBatch certificate of analysis: shown where BioLab supplies one for the batch we hold\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eBecause BioLab states a strength, this pack can be set against other brands on total milligrams, which is the basis our \u003ca href=\"\/en-ro\/collections\/bpc-157\"\u003eBPC-157 collection\u003c\/a\u003e uses. The method is explained in \u003ca href=\"\/en-ro\/blogs\/news\/price-per-mg-compare-sarms-peptides\"\u003eprice per milligram\u003c\/a\u003e.\u003c\/p\u003e\n\u003ch2\u003eBPC-157 in the UK: buying, legal status and what to check\u003c\/h2\u003e\n\u003cp\u003eSearches such as \"BPC 157 UK legal\" and \"BPC 157 UK buy\" ask two separate things: may it be sold here, and how can a buyer judge a seller.\u003c\/p\u003e\n\u003ch3\u003eWhere the law stands\u003c\/h3\u003e\n\u003cp\u003eBPC-157 is not a licensed medicine in the UK and has not been assessed by the MHRA. It is not an authorised food supplement, so it may not be marketed for eating or swallowing, and it is not a controlled drug. That combination leaves one lawful basis for sale: as a material for laboratory research, supplied to adults aged 18 and over, with no instructions for use in people. Because no licensed BPC-157 product exists in any country, it is not something a GP or the NHS can prescribe. Buyers remain responsible for any rules that apply to them, including anti-doping rules.\u003c\/p\u003e\n\u003ch3\u003eSigns of a careful listing\u003c\/h3\u003e\n\u003col\u003e\n\u003cli\u003eThe brand is named and the seller is an identifiable business with a contact route.\u003c\/li\u003e\n\u003cli\u003eThe label gives a strength per capsule and a pack count, so the total can be worked out.\u003c\/li\u003e\n\u003cli\u003eEach pack carries a batch or lot number.\u003c\/li\u003e\n\u003cli\u003eAny certificate offered carries that same batch number and names the laboratory.\u003c\/li\u003e\n\u003cli\u003eThe page describes research rather than promising results, and carries no dosing directions.\u003c\/li\u003e\n\u003cli\u003eDelivery is tracked, packaging is plain, and the returns terms are written down.\u003c\/li\u003e\n\u003c\/ol\u003e\n\u003ch3\u003eHow this listing measures up\u003c\/h3\u003e\n\u003cp\u003eThe seller is named: FreeMuscle, registered in Andorra, with UK operations and dispatch in Scunthorpe. BioLab is named as the brand, and the label states 200 mcg per capsule across 60 capsules, so points one and two are met. Points three and four depend on BioLab: the product photos do not show where a lot number is printed, and the BioLab report shown on this page has no batch number, so it cannot be matched to a lot. Sales are limited to adults, and this page gives no directions. Every UK order ships free by tracked delivery in plain packaging, orders placed before 2pm Monday to Friday are processed the same working day, EU delivery takes 3-7 working days, and unopened items may be returned within 30 days under our \u003ca href=\"\/en-ro\/pages\/guarantee\"\u003eguarantee\u003c\/a\u003e. Our \u003ca href=\"\/en-ro\/blogs\/news\/how-to-choose-a-sarms-supplier-uk-checklist\"\u003eUK supplier checklist\u003c\/a\u003e expands on each point.\u003c\/p\u003e\n\u003ch2\u003eCapsules compared with other forms\u003c\/h2\u003e\n\u003cp\u003eThe query \"BPC 157 capsules vs injection\" asks whether the delivery format changes what reaches the body. The honest answer is that nobody has measured it for capsules. Research on BPC-157 has used several routes: injection into the abdominal cavity in most rodent work, direct application in some wound models, and in certain Zagreb experiments the peptide was dissolved in the animals' drinking water. The 2025 systematic review reported that, in the animal data available, BPC-157 has a half-life of under 30 minutes, is metabolised in the liver and is cleared by the kidneys. None of those figures comes from a swallowed capsule in a person.\u003c\/p\u003e\n\u003cp\u003eThe underlying problem for any peptide taken by mouth is digestion. Stomach acid and pepsin, then pancreatic and brush-border enzymes, cleave peptide bonds, and a fifteen-residue chain is well within their range. The originating group reports that BPC-157 resists human gastric juice, but whether intact peptide crosses the gut wall in people is unknown.\u003c\/p\u003e\n\u003cp\u003eAs laboratory materials the formats behave differently. Capsules hold a fixed weight of dry powder, usually diluted with a filler, so uniformity depends on how well the batch was blended; a 200 mcg fill is a tiny fraction of the capsule contents, which makes even mixing harder. Lyophilised powder in vials stays dry until reconstituted; solutions, including ready-made liquids, are exposed to hydrolysis and contamination. None of this implies that any format has an effect. Both routes are examined in \u003ca href=\"\/en-ro\/blogs\/news\/bpc-157-capsules-vs-injection-what-studies-used\"\u003ewhat the studies used\u003c\/a\u003e and in \u003ca href=\"\/en-ro\/blogs\/news\/do-oral-peptides-work\"\u003edo oral peptides work\u003c\/a\u003e.\u003c\/p\u003e\n\u003ch2\u003eBPC-157 compared with TB-500\u003c\/h2\u003e\n\u003cp\u003eTB-500 is the compound searched most often next to BPC-157, as in \"BPC 157 and TB 500\" and \"TB 500 vs BPC 157\". They are often sold side by side, but they are unrelated molecules.\u003c\/p\u003e\n\u003cp\u003eBPC-157 is a 15-residue fragment traced to a gastric juice protein and weighs about 1,420 g\/mol. TB-500 is marketed as a synthetic peptide derived from thymosin beta-4, a 43-amino-acid protein of about 4,963 g\/mol found inside most cells, where it binds monomeric actin, the building block of the cell's internal scaffolding, and so influences how cells move. Thymosin beta-4 research is spread across many groups and mostly uses the full-length protein, including small early clinical studies of eye and skin preparations; the fragment sold as TB-500 has no comparable human data, and BPC-157 work comes mostly from one Zagreb network.\u003c\/p\u003e\n\u003ctable\u003e\n\u003cthead\u003e\u003ctr\u003e\n\u003cth\u003eQuestion\u003c\/th\u003e\n\u003cth\u003eBPC-157\u003c\/th\u003e\n\u003cth\u003eTB-500\u003c\/th\u003e\n\u003c\/tr\u003e\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003eParent molecule\u003c\/td\u003e\n\u003ctd\u003eGastric juice protein\u003c\/td\u003e\n\u003ctd\u003eThymosin beta-4\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eSize\u003c\/td\u003e\n\u003ctd\u003e15 amino acids\u003c\/td\u003e\n\u003ctd\u003eFragment of a 43-amino-acid protein\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eLicensed as a medicine\u003c\/td\u003e\n\u003ctd\u003eNowhere\u003c\/td\u003e\n\u003ctd\u003eNowhere\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eWADA section\u003c\/td\u003e\n\u003ctd\u003eS0, non-approved substances\u003c\/td\u003e\n\u003ctd\u003eS2, growth factor modulators\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eProhibited\u003c\/td\u003e\n\u003ctd\u003eAt all times\u003c\/td\u003e\n\u003ctd\u003eAt all times\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003cp\u003eNo study has compared the two directly, so there is no basis for ranking one above the other, and we publish nothing on using them together. TB-500 brands we hold are in the \u003ca href=\"\/en-ro\/collections\/tb-500\"\u003eTB-500 collection\u003c\/a\u003e, for example \u003ca href=\"\/en-ro\/products\/thoroughbred-labs-tb500-peptide-capsule-ndash-thoroughbred-labs\"\u003eThoroughbred Labs TB-500 capsules\u003c\/a\u003e, and the literature is summarised in our \u003ca href=\"\/en-ro\/blogs\/news\/tb-500-thymosin-beta-4-research-guide\"\u003eTB-500 research guide\u003c\/a\u003e.\u003c\/p\u003e\n\u003ch2\u003eReading the certificate of analysis for this product\u003c\/h2\u003e\n\u003cp\u003eBioLab is a third-party brand in the Muscle Market range, so the testing position differs from our own label. Every Free Muscle-brand batch is assayed by \u003ca href=\"\/en-ro\/blogs\/news\/what-is-janoshik-analytical\"\u003eJanoshik Analytical\u003c\/a\u003e, an independent laboratory, with the certificate sent on request by email; that applies, for instance, to our \u003ca href=\"\/en-ro\/collections\/bpc-150\"\u003eBPC-150\u003c\/a\u003e capsules, but not to BioLab. For BioLab products we show a certificate of analysis only where BioLab supplies one for the specific batch we hold. A generic PDF with no batch number is not a batch certificate, and we do not present one as such. The report in this listing's gallery comes from Analiza Białek sp. z o.o., a testing laboratory in Wrocław, Poland, and is dated September 2022. It names the sample BIOLAB BPC-157 HCL 200MCG\/TAB, ties it to a lab order reference and a photo of the tub rather than to a batch, and gives a content of 195 mcg per unit by HPLC against the 200 mcg label, with a stated measurement error of plus or minus 0.5 mcg. Its purity and batch number fields are blank, so it records what one sample held in 2022, not what a later lot holds. Read it, or any newer BioLab report, in this order:\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eBatch number\u003c\/strong\u003e: compare it with the lot printed on your pack first. If they differ, nothing else on the page applies to your capsules.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eIdentity method\u003c\/strong\u003e: HPLC compares retention time with a reference standard; LC-MS also measures the molecular mass, which for the parent peptide is close to 1419.5. A mass result is stronger evidence of identity.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePurity\u003c\/strong\u003e: the percentage of the chromatogram taken by the BPC-157 peak. It says how clean the peptide is, not how much is in each capsule.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eContent per capsule\u003c\/strong\u003e: the measured amount, to set against the 200 mcg on the label. Check whether it is reported as salt or as peptide, given the HCl form.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eLaboratory and test date\u003c\/strong\u003e: a named laboratory can be contacted, and the date shows how old the result is relative to the batch.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eIf a field is missing, the certificate proves less. No content line means the 200 mcg figure rests on the label alone; no identity method means the purity figure could describe any peptide. \u003ca href=\"\/en-ro\/pages\/contact\"\u003eContact us\u003c\/a\u003e with the product name and batch number to ask what is held for that batch. See our \u003ca href=\"\/en-ro\/pages\/lab-tests\"\u003elab tests page\u003c\/a\u003e and \u003ca href=\"\/en-ro\/blogs\/news\/how-to-read-a-certificate-of-analysis\"\u003ehow to read a certificate of analysis\u003c\/a\u003e.\u003c\/p\u003e\n\u003ch2\u003eDetection, sport and testing\u003c\/h2\u003e\n\u003cp\u003eBPC-157 has no current approval for human therapeutic use by any health authority, so it falls under section S0 (non-approved substances) of the WADA Prohibited List, where it is now given as a named example. S0 applies at all times, in and out of competition, across every sport that has adopted the World Anti-Doping Code, including those tested by UK Anti-Doping. Under strict liability, an athlete answers for any prohibited substance in their sample, whatever the label said.\u003c\/p\u003e\n\u003cp\u003eA detection method is published. In 2017 the Sports Medicine Research and Testing Laboratory in Salt Lake City reported BPC-157 in confiscated vials and validated a urine test with a limit of detection of 0.1 ng\/mL. The peptide stayed stable in stored urine for at least four days, and a metabolite formed in plasma was proposed as a second marker to make the test more specific. That paper did not measure excretion after human exposure, and no other study has, so the accurate description is detectable, window not established. Athletes should check the current list.\u003c\/p\u003e\n\u003ch2\u003eStorage, stability and handling\u003c\/h2\u003e\n\u003cp\u003eBioLab has not published stability data for this capsule, and no independent study of BPC-157 capsule shelf life exists, so any expiry date printed on the pack is the reference point. Peptide chemistry indicates what shortens it. Water is the main threat, because it allows hydrolysis of peptide bonds; hydrochloride salts of peptides can also draw moisture from the air, so a pack left open in a humid room is at particular risk. Heat speeds degradation and ultraviolet light adds to it. Capsule shells also soften in damp air.\u003c\/p\u003e\n\u003cp\u003eFor the laboratory, that translates into a short routine. Keep the container tightly closed, cool, dry and out of direct sunlight, away from radiators and steamy rooms. Leave any desiccant in place. If the pack is stored cold, allow it to warm to room temperature before opening so moisture does not condense inside. Keep capsules in their original labelled container so they can still be matched to a certificate. Use gloves for opened capsules, keep them away from food, children and pets, and dispose of unwanted material as chemical waste.\u003c\/p\u003e\n\u003ch2\u003eGlossary\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eAmino acid residue\u003c\/strong\u003e: one unit in a peptide chain; BPC-157 has fifteen.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eHydrochloride (HCl)\u003c\/strong\u003e: a salt form in which chloride accompanies the peptide; it adds mass that is not peptide.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCounter-ion\u003c\/strong\u003e: the charged partner, such as chloride or acetate, that stays with a peptide after purification.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMicrogram (mcg)\u003c\/strong\u003e: one thousandth of a milligram; 200 mcg equals 0.2 mg.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePreclinical\u003c\/strong\u003e: research in cells or animals, before any study in people.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSystematic review\u003c\/strong\u003e: a structured search and appraisal of all studies on a question, using stated rules.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eHalf-life\u003c\/strong\u003e: the time taken for the amount of a substance in the body or a sample to fall by half.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eStrict liability\u003c\/strong\u003e: the anti-doping principle that an athlete is responsible for any prohibited substance in their sample.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSection S0\u003c\/strong\u003e: the WADA category for substances with no current approval for human therapeutic use.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2\u003eAbout BioLab BPC-157 HCl\u003c\/h2\u003e\n\u003cp\u003eBioLab sells this product as BPC-157 HCl 200 mcg, 60 capsules, and the tub repeats those facts in two arrow tags, 200 MCG\/CAPS and 60 CAPS, beneath a name bar reading BPC-157 HCL with Body Protection Compound in small type. The pink trim, tiger-head emblem and repeated BIOLAB band follow the brand's design for its research tubs. BioLab presents capsules of this kind as research preparations that are not for consumption, says it distributes them rather than making them, and does not name who manufactures them.\u003c\/p\u003e\n\u003cp\u003eThe HCl in the name separates this capsule from others in BioLab's own range. On its web shop, checked on 2 October 2026, the brand lists BPC-157 capsules in hydrochloride and arginate (ARG) forms, each at 100 and 200 mcg, alongside 5 mg and 10 mg listings and sprays. Free Muscle stocks only this HCl 200 mcg capsule, 12 mg per tub. BioLab says it posts current reports with each product and sends them on request, so a report newer than the 2022 one described above may exist: ask us what is held for the lot on your tub.\u003c\/p\u003e\n\u003cp\u003eTwo other brands of BPC-157 capsules are listed in our \u003ca href=\"\/en-ro\/collections\/bpc-157\"\u003eBPC-157 collection\u003c\/a\u003e, both in 60-capsule tubs. \u003ca href=\"\/en-ro\/products\/yakka-strength-yakka-strength-bpc157-peptide-capsules\"\u003eYakka Strength\u003c\/a\u003e labels 250 mcg per capsule (15 mg per tub) without naming a salt, and \u003ca href=\"\/en-ro\/products\/thoroughbred-labs-bpc157-peptide-capsule-ndash-thoroughbred-labs\"\u003eThoroughbred Labs\u003c\/a\u003e labels 300 mcg of the arginate (18 mg). None of the three labels says whether its figure counts the salt or the peptide alone, so these totals compare label claims rather than measured peptide. Each brand's full range is on its own page: \u003ca href=\"\/en-ro\/collections\/brand-biolab\"\u003eBioLab\u003c\/a\u003e, \u003ca href=\"\/en-ro\/collections\/brand-yakka-strength\"\u003eYakka Strength\u003c\/a\u003e and \u003ca href=\"\/en-ro\/collections\/brand-thoroughbred-labs\"\u003eThoroughbred Labs\u003c\/a\u003e.\u003c\/p\u003e\n\u003cp\u003eAs a compound, BPC-157 is a synthetic fragment of 15 amino acids from a gastric juice protein. A 2025 systematic review counted 35 preclinical studies and a single small clinical case series, which used injection. It has no UK medicines licence or food authorisation, and WADA bans it at all times under section S0.\u003c\/p\u003e\n\u003ch2\u003eRelated\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003e\u003ca href=\"\/en-ro\/collections\/bpc-157\"\u003eAll brands of BPC-157 we stock, compared\u003c\/a\u003e\u003c\/li\u003e\n\u003cli\u003e\u003ca href=\"\/en-ro\/collections\/brand-biolab\"\u003eAll BioLab products\u003c\/a\u003e\u003c\/li\u003e\n\u003cli\u003e\u003ca href=\"\/en-ro\/collections\/peptides\"\u003eResearch peptides\u003c\/a\u003e\u003c\/li\u003e\n\u003cli\u003e\u003ca href=\"\/en-ro\/pages\/lab-tests\"\u003eBatch testing and certificates of analysis\u003c\/a\u003e\u003c\/li\u003e\n\u003cli\u003e\n\u003ca href=\"\/en-ro\/pages\/shipping\"\u003eDelivery\u003c\/a\u003e and \u003ca href=\"\/en-ro\/pages\/guarantee\"\u003ereturns\u003c\/a\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cem\u003eResearch compounds sold by Free Muscle are supplied for laboratory research use only and are not for human consumption. They are not authorised as medicines by the MHRA, EMA or FDA, are not food supplements, and are sold only to adults aged 18 or over. Nothing on this page is medical or dosing advice. Summaries of published research describe study findings and are not claims about any product.\u003c\/em\u003e\u003c\/p\u003e\n\u003ch2\u003eReferences\u003c\/h2\u003e\n\u003col\u003e\n\u003cli\u003eChang CH, et al. The promoting effect of pentadecapeptide BPC 157 on tendon healing involves tendon outgrowth, cell survival, and cell migration. J Appl Physiol (1985). 2011;110(3):774-80. \u003ca href=\"https:\/\/pubmed.ncbi.nlm.nih.gov\/21030672\/\" rel=\"noopener\"\u003ePMID: 21030672\u003c\/a\u003e.\u003c\/li\u003e\n\u003cli\u003eSikiric P, et al. Brain-gut Axis and Pentadecapeptide BPC 157: Theoretical and Practical Implications. Curr Neuropharmacol. 2016;14(8):857-865. \u003ca href=\"https:\/\/pubmed.ncbi.nlm.nih.gov\/27138887\/\" rel=\"noopener\"\u003ePMID: 27138887\u003c\/a\u003e.\u003c\/li\u003e\n\u003cli\u003eVasireddi N, et al. Emerging Use of BPC-157 in Orthopaedic Sports Medicine: A Systematic Review. HSS J. 2025;21(4):485-495. \u003ca href=\"https:\/\/pubmed.ncbi.nlm.nih.gov\/40756949\/\" rel=\"noopener\"\u003ePMID: 40756949\u003c\/a\u003e.\u003c\/li\u003e\n\u003cli\u003eCox HD, et al. Detection and in vitro metabolism of the confiscated peptides BPC 157 and MGF R23H. Drug Test Anal. 2017;9(10):1490-1498. \u003ca href=\"https:\/\/pubmed.ncbi.nlm.nih.gov\/28035768\/\" rel=\"noopener\"\u003ePMID: 28035768\u003c\/a\u003e.\u003c\/li\u003e\n\u003c\/ol\u003e","brand":"BioLab","offers":[{"title":"Default Title","offer_id":48468978204898,"sku":null,"price":41.99,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0772\/3499\/5426\/files\/bpc-157-hcl-200-mcg-60-caps_e7770d7c-daa4-464f-a726-d14a7b682e94.jpg?v=1789931386"},{"product_id":"biolab-metabolic-boost-slu-pp-332-100-mcg-60-caps","title":"BioLab Metabolic Boost (SLU-PP-332) 100 mcg, 60 caps","description":"\u003cp\u003e\u003cstrong\u003eBioLab Metabolic Boost (SLU-PP-332) 100 mcg, 60 caps\u003c\/strong\u003e is the lowest-strength BioLab listing of SLU-PP-332, labelled at 100 mcg (0.1 mg) per capsule, 60 capsules per pack. \"Metabolic Boost\" is BioLab's trade name, not a description of any effect, and we make no claim that this product does anything in people. It is supplied through the \u003ca href=\"\/en-ro\/pages\/muscle-market\"\u003eMuscle Market\u003c\/a\u003e range for laboratory research only, is not for human consumption, and is sold to adults aged 18 and over.\u003c\/p\u003e\n\u003ch2\u003eAbout SLU-PP-332\u003c\/h2\u003e\n\u003cp\u003eSLU-PP-332, also written SLU PP 332, is a synthetic pan-agonist of the oestrogen-related receptors ERR alpha, beta and gamma. These are orphan nuclear receptors, unrelated to the oestrogen receptor despite the name, that regulate mitochondrial biogenesis and oxidative metabolism in muscle and heart. It was developed by Thomas Burris, John Walker and colleagues, the SLU prefix referring to Saint Louis University, and was first reported as an ERR agonist in 2023. It is behind the exercise-in-a-pill headlines of the last few years.\u003c\/p\u003e\n\u003ctable\u003e\n\u003cthead\u003e\u003ctr\u003e\n\u003cth\u003eIdentifier\u003c\/th\u003e\n\u003cth\u003eSLU-PP-332\u003c\/th\u003e\n\u003c\/tr\u003e\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003eCAS number\u003c\/td\u003e\n\u003ctd\u003e303760-60-3\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMolecular formula\u003c\/td\u003e\n\u003ctd\u003eC18H14N2O2\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMolecular weight\u003c\/td\u003e\n\u003ctd\u003e290.3 g\/mol\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eIUPAC name\u003c\/td\u003e\n\u003ctd\u003e4-hydroxy-N-[(E)-naphthalen-2-ylmethylideneamino]benzamide\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eInChIKey\u003c\/td\u003e\n\u003ctd\u003eRNZIMBFHRXYRLL-XDHOZWIPSA-N\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003ePubChem CID\u003c\/td\u003e\n\u003ctd\u003e5338394\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003cp\u003eChemically it is an acyl hydrazone: a 4-hydroxybenzoyl unit joined to a naphthalene ring through a carbon-nitrogen double bond. It is a small organic molecule, not a peptide, although shops and search engines often file it under peptides.\u003c\/p\u003e\n\u003ch3\u003eWhat the published research reports\u003c\/h3\u003e\n\u003cp\u003eIn the 2023 ACS Chemical Biology paper, SLU-PP-332 increased mitochondrial function and cellular respiration in a skeletal muscle cell line. Mice given the compound showed more type IIa oxidative muscle fibres, a gene expression pattern in muscle resembling the acute response to aerobic exercise, and greater running endurance; the authors reported that ERR alpha activation was critical for the endurance effect. A 2024 follow-up in diet-induced obese and genetically obese (ob\/ob) mice reported increased energy expenditure and fatty acid oxidation, less fat mass accumulation and improved insulin sensitivity. Authors of both papers declared shareholdings in a company developing ERR-based therapeutics.\u003c\/p\u003e\n\u003cp\u003eIn a 2026 paper the same group described a chemically distinct successor, SLU-PP-915, and stated plainly that SLU-PP-332 improves aerobic performance in mice but lacks oral bioavailability; the newer molecule was characterised because it is active by mouth. In that paper SLU-PP-332 was given by intraperitoneal injection, and it too carries a declared conflict of interest: the senior author is named as inventor on the university's intellectual property covering SLU-PP-915 and holds shares in companies developing ERR agonists. There is no human data of any kind, no human pharmacokinetic study, and no safety study in people. It is one of the newest compounds in this market and one of the least characterised. Nothing above is a claim about this product.\u003c\/p\u003e\n\u003ch2\u003eThis listing\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003eBrand: \u003ca href=\"\/en-ro\/collections\/brand-biolab\"\u003eBioLab\u003c\/a\u003e\n\u003c\/li\u003e\n\u003cli\u003eCompound: SLU-PP-332\u003c\/li\u003e\n\u003cli\u003eForm: Capsules\u003c\/li\u003e\n\u003cli\u003ePack size: 60 capsules\u003c\/li\u003e\n\u003cli\u003eStrength: 100 mcg (0.1 mg) per capsule, as printed on the BioLab label\u003c\/li\u003e\n\u003cli\u003eTotal in pack: 6 mg (100 mcg x 60 capsules)\u003c\/li\u003e\n\u003cli\u003eBatch certificate of analysis: shown where BioLab supplies one for the batch we hold\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eBioLab also lists the compound at \u003ca href=\"\/en-ro\/products\/biolab-metabolic-boost-slu-pp-332-200-mcg-60-caps\"\u003e200 mcg per capsule\u003c\/a\u003e (12 mg per pack) and \u003ca href=\"\/en-ro\/products\/biolab-metabolic-boost-slu-pp-332-500-mcg-60-caps\"\u003e500 mcg per capsule\u003c\/a\u003e (30 mg per pack), each in 60 capsules, and \u003ca href=\"\/en-ro\/products\/thoroughbred-labs-slu\"\u003eThoroughbred Labs SLU-PP-332\u003c\/a\u003e is a separate 60-capsule listing labelled at 250 mcg per capsule, or 15 mg per pack. Total milligrams per pack is the fair basis for comparison; our \u003ca href=\"\/en-ro\/blogs\/news\/price-per-mg-compare-sarms-peptides\"\u003eprice per milligram guide\u003c\/a\u003e sets out the method.\u003c\/p\u003e\n\u003ch2\u003eSLU-PP-332 in the UK: buying, legal status and what to check\u003c\/h2\u003e\n\u003cp\u003eSearches such as \"SLU PP 332 UK buy\", \"UK source\" and \"UK reviews\" ask two things: what the law allows, and how to tell a documented listing from an undocumented one.\u003c\/p\u003e\n\u003ch3\u003eThe legal position\u003c\/h3\u003e\n\u003cp\u003eSLU-PP-332 is not a licensed medicine in the UK, has not been assessed by the MHRA, and is not an authorised food supplement or novel food. It is not a controlled drug. No licensed medicine containing it exists anywhere, so it is not something a UK pharmacy supplies as a medicine, and listings on general marketplaces that present it as a supplement describe something it cannot lawfully be sold as. What remains is supply for laboratory research to adults aged 18 and over, which is the only basis for this listing; it is not for human consumption. In sport it is prohibited at all times: as a substance with no current approval for human therapeutic use it is caught at minimum by WADA section S0 (non-approved substances), and anti-doping scientists describe exercise mimetics and metabolic modulators as prohibited. Anyone subject to anti-doping rules should consult the current list. Our \u003ca href=\"\/en-ro\/blogs\/news\/what-are-sarms-the-2026-research-guide\"\u003eresearch guide\u003c\/a\u003e covers the wider legal picture.\u003c\/p\u003e\n\u003ch3\u003eWhat a documented UK listing shows\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eA named brand and a reachable UK seller\u003c\/strong\u003e, so there is someone accountable for the pack.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eStrength per capsule with its unit\u003c\/strong\u003e, micrograms or milligrams, plus the capsule count, so the total can be checked. Confusing mcg with mg is a thousand-fold error.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eA lot number on the container\u003c\/strong\u003e and a certificate carrying the same number, or a plain statement that none is held.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eResearch-use terms\u003c\/strong\u003e: 18+ only, no directions for use, and no talk of fat loss or endurance. Calling SLU-PP-332 an \"exercise pill\" is a claim no regulator has assessed.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eHow this listing compares\u003c\/h3\u003e\n\u003cp\u003eThe seller is named: FreeMuscle, registered in Andorra, with UK operations and dispatch in Scunthorpe. Every UK order travels by free tracked delivery in plain packaging, orders placed before 2pm Monday to Friday are processed the same working day, EU delivery takes 3-7 working days, and unopened items may be returned within 30 days (\u003ca href=\"\/en-ro\/pages\/shipping\"\u003edelivery\u003c\/a\u003e, \u003ca href=\"\/en-ro\/pages\/guarantee\"\u003ereturns\u003c\/a\u003e). BioLab is named and states a strength, so the total per pack can be worked out. The certificate point depends on what BioLab has supplied for the batch in stock, covered below. We do not publish outcome reports. A fuller checklist is in \u003ca href=\"\/en-ro\/blogs\/news\/how-to-choose-a-sarms-supplier-uk-checklist\"\u003ehow to choose a UK supplier\u003c\/a\u003e.\u003c\/p\u003e\n\u003ch2\u003eCapsules compared with other forms\u003c\/h2\u003e\n\u003cp\u003e\"SLU-PP-332 capsules\" and \"SLU-PP-332 injectable\" are both common searches, and the published literature bears directly on the difference. Every in vivo result summarised above came from mice given the compound by injection. The developers themselves describe SLU-PP-332 as lacking oral bioavailability, which is why they went on to make SLU-PP-915. No study has measured what swallowed SLU-PP-332 does in an animal or a person, so we make no comparison of forms on effect.\u003c\/p\u003e\n\u003cp\u003eThe oral-peptide argument does not apply here. SLU-PP-332 is not broken down by digestive proteases, because it is not a peptide; the developers report a bioavailability problem without, in the abstract, giving its cause. For peptides the issue is different, as our article \u003ca href=\"\/en-ro\/blogs\/news\/do-oral-peptides-work\"\u003edo oral peptides work\u003c\/a\u003e explains.\u003c\/p\u003e\n\u003cp\u003eWhere the forms do differ measurably is content and stability:\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eCapsules\u003c\/strong\u003e at 100 mcg hold a very small quantity of active blended into a much larger mass of filler. Content per capsule depends on how evenly that blend was mixed, which is why a content-per-capsule result on the certificate matters more at micrograms than at milligrams.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eLiquids and injectable research products\u003c\/strong\u003e rely on the compound staying dissolved and intact in the solvent. An acyl hydrazone sitting in water is exposed to hydrolysis, and each measured volume is only as accurate as the pipette.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2\u003eSLU-PP-332 compared with cardarine\u003c\/h2\u003e\n\u003cp\u003eCardarine (GW-501516) is the related compound most often searched alongside SLU-PP-332, because both have been called exercise mimetics. They act on different nuclear receptors and have very different histories.\u003c\/p\u003e\n\u003ctable\u003e\n\u003cthead\u003e\u003ctr\u003e\n\u003cth\u003ePoint\u003c\/th\u003e\n\u003cth\u003eSLU-PP-332\u003c\/th\u003e\n\u003cth\u003eCardarine (GW-501516)\u003c\/th\u003e\n\u003c\/tr\u003e\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003eTarget\u003c\/td\u003e\n\u003ctd\u003eERR alpha, beta and gamma (agonist)\u003c\/td\u003e\n\u003ctd\u003ePPAR-delta (selective agonist)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eFormula\u003c\/td\u003e\n\u003ctd\u003eC18H14N2O2\u003c\/td\u003e\n\u003ctd\u003eC21H18F3NO3S2\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMolecular weight\u003c\/td\u003e\n\u003ctd\u003e290.3 g\/mol\u003c\/td\u003e\n\u003ctd\u003e453.5 g\/mol\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eCAS number\u003c\/td\u003e\n\u003ctd\u003e303760-60-3\u003c\/td\u003e\n\u003ctd\u003e317318-70-0\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOrigin\u003c\/td\u003e\n\u003ctd\u003eSaint Louis University, reported as an ERR agonist in 2023\u003c\/td\u003e\n\u003ctd\u003eLigand Pharmaceuticals and GlaxoSmithKline, 1990s\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eHuman data\u003c\/td\u003e\n\u003ctd\u003eNone\u003c\/td\u003e\n\u003ctd\u003eSmall trials of two to six weeks on blood lipids\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eDevelopment\u003c\/td\u003e\n\u003ctd\u003eAcademic, preclinical only\u003c\/td\u003e\n\u003ctd\u003eDiscontinued by GSK in 2007 after rodent carcinogenicity findings\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eUK status\u003c\/td\u003e\n\u003ctd\u003eUnlicensed research compound\u003c\/td\u003e\n\u003ctd\u003eUnlicensed research compound\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eWADA\u003c\/td\u003e\n\u003ctd\u003eProhibited at all times (S0 non-approved substances at minimum)\u003c\/td\u003e\n\u003ctd\u003eS4, metabolic modulators (PPAR-delta agonists)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003cp\u003eOn mechanism, both receptors sit in the cell nucleus and switch on genes for fat oxidation and mitochondrial function in muscle, but they are separate proteins with separate ligands, so one compound is not a variant of the other. On evidence, cardarine is the better documented and the more troubling: its short human trials measured changes in blood lipids, and its pharmaceutical development stopped after long-term rodent studies reported tumours in several organs. WADA issued a public warning about it in 2013. SLU-PP-332 has no human trials, no long-term toxicology and only a handful of mouse papers, so its absence of reported harms reflects an absence of study, not a clean record.\u003c\/p\u003e\n\u003cp\u003eOn regulation they converge: neither is licensed in the UK, neither may be sold for consumption, and both are prohibited at all times in sport, under different sections of the WADA list. No head-to-head study exists, and we do not rank research compounds by effect. The brands held are in the \u003ca href=\"\/en-ro\/collections\/cardarine\"\u003ecardarine collection\u003c\/a\u003e, and the full development history is in \u003ca href=\"\/en-ro\/blogs\/news\/cardarine-gw-501516-what-happened-in-development\"\u003ecardarine (GW-501516): why development stopped\u003c\/a\u003e.\u003c\/p\u003e\n\u003ch2\u003eReading the certificate of analysis for this product\u003c\/h2\u003e\n\u003cp\u003eBioLab is a third-party brand in the Muscle Market range, so the testing position differs from our own label. Every Free Muscle-brand batch is assayed by Janoshik Analytical, an independent laboratory, with the certificate sent on request by email. For BioLab products we show a certificate of analysis only where BioLab supplies one for the specific batch we hold. A generic PDF with no batch number is not a batch certificate, and we do not present one as such. You can contact us with the product name and lot number to ask what is held for that batch. The certificate pictured in this listing's gallery was issued in October 2024 by Analiza Białek sp. z o.o., a registered testing company in Wrocław, Poland. It names the sample BIOLAB METABOLIC BOOST 100MCG\/CAPS and reports 118.34 mcg per capsule by HPLC for a label figure of 100 mcg, with a stated error of plus or minus 0.5 mcg; BioLab quotes the same figure on its own page for this product. The purity and batch number fields are empty, and the sample is known only by a laboratory order reference and a picture of a tub with a shrink-sealed cap, so the result describes that sample rather than your lot. For that report, or any newer one, these are the lines to read:\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eIdentity.\u003c\/strong\u003e HPLC confirms identity only indirectly, by matching a peak's retention time to a reference standard. LC-MS is firmer: SLU-PP-332 has a monoisotopic mass of about 290.11, so the protonated molecule should appear near m\/z 291.1.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePurity (%).\u003c\/strong\u003e The share of the chromatogram taken by the main peak. For a hydrazone, small extra peaks can be the other geometric isomer or breakdown products (4-hydroxybenzohydrazide and 2-naphthaldehyde), which is useful context when purity falls short of the headline figure.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eContent per capsule.\u003c\/strong\u003e The line that tests the 100 mcg label. A purity figure alone says nothing about how much compound each capsule holds.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eBatch number.\u003c\/strong\u003e It must match the lot printed on the pack you have.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eLaboratory and test date.\u003c\/strong\u003e They show who ran the analysis and how old the result is.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eA missing field has a plain meaning. No identity result means nothing independent confirms the compound; no content result leaves the stated strength unverified; a different batch number means the certificate describes other material. \u003ca href=\"\/en-ro\/pages\/contact\"\u003eContact us\u003c\/a\u003e with the lot number, and see \u003ca href=\"\/en-ro\/blogs\/news\/how-to-read-a-certificate-of-analysis\"\u003ehow to read a certificate of analysis\u003c\/a\u003e and our \u003ca href=\"\/en-ro\/pages\/lab-tests\"\u003elab tests page\u003c\/a\u003e.\u003c\/p\u003e\n\u003ch2\u003eDetection, sport and testing\u003c\/h2\u003e\n\u003cp\u003eSLU-PP-332 is prohibited at all times in sport (section S0 at minimum), and the anti-doping community has already started work on finding it. In a 2026 study from the UCLA Olympic Analytical Laboratory, researchers incubated the compound with pooled human liver S9 fractions and used liquid chromatography with high-resolution mass spectrometry to identify 22 metabolites: mono- and dihydroxylated forms, reduced dihydroxylated forms, and glucuronide and sulfate conjugates, some with hydroxylation of the naphthalene or phenolic ring. They named eight of the most abundant as candidate targets for doping control and noted that further work is needed to confirm the structures.\u003c\/p\u003e\n\u003cp\u003eThat is an in vitro result. No human excretion study of SLU-PP-332 has been published, so the accurate statement is: detectable in principle, window not established. Under strict liability an athlete is responsible for any prohibited substance found in their sample, whatever its source, so anyone subject to testing should treat any exposure as reportable. The current list and any updates are published by WADA each year.\u003c\/p\u003e\n\u003ch2\u003eStorage, stability and handling\u003c\/h2\u003e\n\u003cp\u003eNo stability study of SLU-PP-332 capsules has been published, so the expiry printed on the BioLab tub, where there is one, is the only stated limit. The chemistry still points to sensible practice. The hydrazone link is the part of the molecule most open to attack by water, and the reaction is faster in acidic conditions, so moisture is the first thing to keep out. The conjugated naphthalene system absorbs ultraviolet light, and compounds with this kind of carbon-nitrogen double bond can switch between geometric isomers under light, so the container should stay closed and out of sunlight.\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eStore the container shut, in its original packaging, somewhere with a steady temperature, low humidity and no direct light.\u003c\/li\u003e\n\u003cli\u003eA refrigerated container should warm up unopened first, otherwise moist air condenses on cold capsules the moment the lid comes off.\u003c\/li\u003e\n\u003cli\u003eWear gloves for any opened capsule, keep the work area free of food and drink, and store the pack where children and pets cannot reach it.\u003c\/li\u003e\n\u003cli\u003eTreat spent capsules and packaging residues as chemical waste rather than household rubbish or drain waste.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2\u003eGlossary\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eOestrogen-related receptors (ERR)\u003c\/strong\u003e: three nuclear receptors, alpha, beta and gamma, that control genes for energy metabolism; they do not bind oestrogen.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eOrphan nuclear receptor\u003c\/strong\u003e: a receptor whose endogenous activating ligand was unknown when it was discovered.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePan-agonist\u003c\/strong\u003e: a compound that activates every member of a receptor family rather than one subtype.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eExercise mimetic\u003c\/strong\u003e: a research label for a compound that reproduces part of the molecular response to exercise in cells or animals; it is not a finding in people.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eOral bioavailability\u003c\/strong\u003e: the fraction of a swallowed dose that reaches the circulation unchanged.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eAcyl hydrazone\u003c\/strong\u003e: the chemical group linking the two halves of SLU-PP-332, open to hydrolysis in water.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePPAR-delta\u003c\/strong\u003e: the nuclear receptor targeted by cardarine, involved in fatty acid handling in muscle.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eS9 fraction\u003c\/strong\u003e: a liver preparation containing the enzymes that metabolise foreign compounds, used to predict metabolites.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eLC-HRMS\u003c\/strong\u003e: liquid chromatography with high-resolution mass spectrometry, which measures ion masses precisely enough to propose formulas.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2\u003eAbout BioLab Metabolic Boost 100 mcg\u003c\/h2\u003e\n\u003cp\u003eMetabolic Boost is the name BioLab gives its SLU-PP-332 capsules, and the name identifies the product rather than describing what the compound does. The 100 mcg tub is the lowest of three strengths in the line, alongside \u003ca href=\"\/en-ro\/products\/biolab-metabolic-boost-slu-pp-332-200-mcg-60-caps\"\u003e200 mcg\u003c\/a\u003e and \u003ca href=\"\/en-ro\/products\/biolab-metabolic-boost-slu-pp-332-500-mcg-60-caps\"\u003e500 mcg\u003c\/a\u003e versions; all hold 60 capsules, so the labelled totals run 6, 12 and 30 mg. The front of this tub shows the strength twice, in a 100 MCG\/CAPS arrow tag next to 60 CAPS and in a yellow starburst beside the tiger emblem, with SLU-PP-332 printed under the orange METABOLIC BOOST bar. BioLab's shop also lists a separate 30-capsule SLU-PP-332 product under another name, which we do not stock.\u003c\/p\u003e\n\u003cp\u003eBioLab files its research compounds apart from its supplements, calls them preparations for laboratory use that are not for consumption, and describes itself as their distributor; no manufacturer is named. Of the three Metabolic Boost listings, this is the only one carrying a BioLab laboratory report, covered in the certificate section above.\u003c\/p\u003e\n\u003cp\u003eThe other brand of SLU-PP-332 capsules we stock is \u003ca href=\"\/en-ro\/products\/thoroughbred-labs-slu\"\u003eThoroughbred Labs\u003c\/a\u003e, whose 60-capsule tub carries 250 mcg per capsule on its label, 15 mg in all, which places it between BioLab's 200 and 500 mcg tubs on stated content. Thoroughbred Labs publishes its own report for a named batch. Both brands sit side by side in the \u003ca href=\"\/en-ro\/collections\/slu-pp-332\"\u003eSLU-PP-332 collection\u003c\/a\u003e, and their full ranges are on the \u003ca href=\"\/en-ro\/collections\/brand-biolab\"\u003eBioLab\u003c\/a\u003e and \u003ca href=\"\/en-ro\/collections\/brand-thoroughbred-labs\"\u003eThoroughbred Labs\u003c\/a\u003e pages.\u003c\/p\u003e\n\u003cp\u003eChemically, SLU-PP-332 is a non-peptide compound that switches on all three ERR nuclear receptors. Published work covers mice and cultured cells only, it holds no UK licence of any kind, and WADA treats it as prohibited at all times. To check a tub, read its lot number, set it against the report above, and \u003ca href=\"\/en-ro\/pages\/contact\"\u003econtact us\u003c\/a\u003e with that number to ask what BioLab has supplied for it.\u003c\/p\u003e\n\u003ch2\u003eRelated\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003e\u003ca href=\"\/en-ro\/collections\/slu-pp-332\"\u003eAll brands of SLU-PP-332 we stock, compared\u003c\/a\u003e\u003c\/li\u003e\n\u003cli\u003e\u003ca href=\"\/en-ro\/collections\/brand-biolab\"\u003eAll BioLab products\u003c\/a\u003e\u003c\/li\u003e\n\u003cli\u003e\u003ca href=\"\/en-ro\/blogs\/news\/slu-pp-332-and-5-amino-1mq-research-guide\"\u003eSLU-PP-332 and 5-Amino-1MQ: what the mouse data show\u003c\/a\u003e\u003c\/li\u003e\n\u003cli\u003e\u003ca href=\"\/en-ro\/collections\/5-amino-1mq\"\u003e5-Amino-1MQ collection\u003c\/a\u003e\u003c\/li\u003e\n\u003cli\u003e\u003ca href=\"\/en-ro\/pages\/lab-tests\"\u003eBatch testing and certificates of analysis\u003c\/a\u003e\u003c\/li\u003e\n\u003cli\u003e\n\u003ca href=\"\/en-ro\/pages\/shipping\"\u003eDelivery\u003c\/a\u003e and \u003ca href=\"\/en-ro\/pages\/guarantee\"\u003ereturns\u003c\/a\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cem\u003eResearch compounds sold by Free Muscle are supplied for laboratory research use only and are not for human consumption. They are not authorised as medicines by the MHRA, EMA or FDA, are not food supplements, and are sold only to adults aged 18 or over. Nothing on this page is medical or dosing advice. Summaries of published research describe study findings and are not claims about any product.\u003c\/em\u003e\u003c\/p\u003e\n\u003ch2\u003eReferences\u003c\/h2\u003e\n\u003col\u003e\n\u003cli\u003eBillon C, et al. Synthetic ERRalpha\/beta\/gamma Agonist Induces an ERRalpha-Dependent Acute Aerobic Exercise Response and Enhances Exercise Capacity. ACS Chem Biol. 2023;18(4):756-771. \u003ca href=\"https:\/\/pubmed.ncbi.nlm.nih.gov\/36988910\/\" rel=\"noopener\"\u003ePMID: 36988910\u003c\/a\u003e.\u003c\/li\u003e\n\u003cli\u003eBillon C, et al. A Synthetic ERR Agonist Alleviates Metabolic Syndrome. J Pharmacol Exp Ther. 2024;388(2):232-240. \u003ca href=\"https:\/\/pubmed.ncbi.nlm.nih.gov\/37739806\/\" rel=\"noopener\"\u003ePMID: 37739806\u003c\/a\u003e.\u003c\/li\u003e\n\u003cli\u003eBillon C, et al. An orally active estrogen receptor-related receptor agonist, SLU-PP-915, enhances aerobic exercise capacity. J Pharmacol Exp Ther. 2026;393(1):103787. \u003ca href=\"https:\/\/pubmed.ncbi.nlm.nih.gov\/41421047\/\" rel=\"noopener\"\u003ePMID: 41421047\u003c\/a\u003e.\u003c\/li\u003e\n\u003cli\u003eAvliyakulov NK, et al. Analysis and Identification of In Vitro Metabolites of Exercise Mimetic SLU-PP-332 ERRalpha\/beta\/gamma Agonist for Doping-Control Purposes. Drug Test Anal. 2026;18(3):439-450. \u003ca href=\"https:\/\/pubmed.ncbi.nlm.nih.gov\/41688415\/\" rel=\"noopener\"\u003ePMID: 41688415\u003c\/a\u003e.\u003c\/li\u003e\n\u003c\/ol\u003e","brand":"BioLab","offers":[{"title":"Default Title","offer_id":48468978598114,"sku":null,"price":77.99,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0772\/3499\/5426\/files\/metabolic-boost-slu-pp-332-100-mcg-60-caps_521b6688-6369-4210-ab75-0f5dd5218e04.jpg?v=1789931389"},{"product_id":"biolab-metabolic-boost-slu-pp-332-200-mcg-60-caps","title":"BioLab Metabolic Boost (SLU-PP-332) 200 mcg, 60 caps","description":"\u003cp\u003e\u003cstrong\u003eBioLab Metabolic Boost (SLU-PP-332) 200 mcg, 60 caps\u003c\/strong\u003e is a BioLab listing of SLU-PP-332, labelled at 200 mcg (0.2 mg) per capsule, 60 capsules per pack. It is supplied through the \u003ca href=\"\/en-ro\/pages\/muscle-market\"\u003eMuscle Market\u003c\/a\u003e range for laboratory research only, is not for human consumption, and is sold to adults aged 18 and over. Below: what the published research on SLU-PP-332 reports, what the label documents, how batch certificates are handled for BioLab products, and the questions UK buyers most often ask about this compound.\u003c\/p\u003e\n\u003ch2\u003eAbout SLU-PP-332\u003c\/h2\u003e\n\u003cp\u003eSLU-PP-332, also written SLU PP 332, is a synthetic pan-agonist of the oestrogen-related receptors ERR alpha, beta and gamma. These are orphan nuclear receptors, unrelated to the oestrogen receptor despite the name, that regulate mitochondrial biogenesis and oxidative metabolism in muscle and heart. It was characterised as an ERR agonist by Burris, Walker and colleagues at Saint Louis University in work first reported in 2023, and it is behind the exercise-in-a-pill headlines of the last few years.\u003c\/p\u003e\n\u003cp\u003eIn the 2023 ACS Chemical Biology paper, the compound raised mitochondrial function in a muscle cell line, and mice given it showed more type IIa oxidative muscle fibres, an ERR alpha-specific gene programme resembling the acute response to aerobic exercise, and greater treadmill endurance; the authors reported that ERR alpha activation was critical to the endurance effect (Billon et al., 2023). Three of the authors declared shareholdings in a company developing ERR-based therapeutics. A 2024 follow-up in diet-induced obese and ob\/ob mice reported higher energy expenditure and fatty acid oxidation, less fat mass accumulation and improved insulin sensitivity (Billon et al., 2024). There is no human data of any kind, no human pharmacokinetic study, and no safety study in people. It is one of the newest compounds in this market and one of the least characterised. Nothing above is a claim about this product.\u003c\/p\u003e\n\u003cp\u003eChemically it is a small molecule, not a peptide. PubChem (CID 5338394) lists it under CAS number 303760-60-3 with the formula C18H14N2O2 and a molecular weight of 290.3. Its systematic name, 4-hydroxy-N-[(E)-naphthalen-2-ylmethylideneamino]benzamide, describes a naphthalene ring joined to a 4-hydroxybenzoyl group through an acylhydrazone link. Those identifiers are what a certificate of analysis should match.\u003c\/p\u003e\n\u003ch2\u003eThis listing\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003eBrand: \u003ca href=\"\/en-ro\/collections\/brand-biolab\"\u003eBioLab\u003c\/a\u003e\n\u003c\/li\u003e\n\u003cli\u003eCompound: SLU-PP-332\u003c\/li\u003e\n\u003cli\u003eForm: Capsules\u003c\/li\u003e\n\u003cli\u003ePack size: 60 capsules\u003c\/li\u003e\n\u003cli\u003eStrength: 200 mcg (0.2 mg) per capsule, as printed on the BioLab label\u003c\/li\u003e\n\u003cli\u003eTotal in pack: 12 mg (200 mcg x 60 capsules)\u003c\/li\u003e\n\u003cli\u003eBatch certificate of analysis: shown where BioLab supplies one for the batch we hold\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eBioLab also lists the same compound at \u003ca href=\"\/en-ro\/products\/biolab-metabolic-boost-slu-pp-332-100-mcg-60-caps\"\u003e100 mcg\u003c\/a\u003e and \u003ca href=\"\/en-ro\/products\/biolab-metabolic-boost-slu-pp-332-500-mcg-60-caps\"\u003e500 mcg\u003c\/a\u003e per capsule, giving 6 mg and 30 mg per 60-capsule pack. The 200 mcg pack sits between them. For researchers comparing listings on content, the useful figure is total milligrams per pack against cost, explained in our \u003ca href=\"\/en-ro\/blogs\/news\/price-per-mg-compare-sarms-peptides\"\u003eprice per milligram guide\u003c\/a\u003e.\u003c\/p\u003e\n\u003ch2\u003eSLU-PP-332 in the UK: buying, legal status and what to check\u003c\/h2\u003e\n\u003cp\u003eSearches such as \"SLU PP 332 UK buy\", \"SLU PP 332 UK source\" and \"SLU-PP-332 UK\" usually hide two questions: may it be sold here at all, and how can a buyer tell a credible listing from a guess. On the first, the position is short. SLU-PP-332 is not a licensed medicine in the UK and has not been assessed by the MHRA. It is not an authorised food supplement, and it is not a controlled drug. That leaves one lawful basis for a UK shop, which is sale to adults for laboratory research, with no suggestion that anyone should swallow it. It is not for human consumption. In sport, SLU-PP-332 is not named on the WADA Prohibited List but, as a substance with no current approval for human therapeutic use, it falls under section S0 (non-approved substances) and is prohibited at all times. Anyone subject to anti-doping rules should consult the current list.\u003c\/p\u003e\n\u003cp\u003eOn the second question, the compound's youth is the problem. It entered the pharmacology literature in 2023, reference standards are scarce, and no pharmacopoeia monograph exists, so a label on its own proves little. A listing worth trusting gives the reader enough to check it independently. The table sets out what that means and how this page measures up.\u003c\/p\u003e\n\u003ctable\u003e\n\u003cthead\u003e\u003ctr\u003e\n\u003cth\u003eCheck\u003c\/th\u003e\n\u003cth\u003eWhat it tells a researcher\u003c\/th\u003e\n\u003cth\u003eThis BioLab listing\u003c\/th\u003e\n\u003c\/tr\u003e\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003eStated strength per capsule\u003c\/td\u003e\n\u003ctd\u003eAllows total content and cost per milligram to be worked out\u003c\/td\u003e\n\u003ctd\u003e200 mcg per capsule, 12 mg per pack, as printed by BioLab\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eChemical identifiers\u003c\/td\u003e\n\u003ctd\u003eLets a certificate be matched to the right molecule\u003c\/td\u003e\n\u003ctd\u003eCAS 303760-60-3, C18H14N2O2, MW 290.3 (PubChem)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eCertificate for the batch held\u003c\/td\u003e\n\u003ctd\u003eLinks an analysis to the stock actually shipped\u003c\/td\u003e\n\u003ctd\u003eShown only where BioLab supplies one for that batch\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eNamed UK seller\u003c\/td\u003e\n\u003ctd\u003eGives a contact, an age check and a returns route\u003c\/td\u003e\n\u003ctd\u003eFreeMuscle, registered in Andorra, dispatching from Scunthorpe; 18+ only; 30-day returns on unopened items\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eDelivery terms\u003c\/td\u003e\n\u003ctd\u003eShows the parcel can be traced and is discreet\u003c\/td\u003e\n\u003ctd\u003eFree tracked UK delivery, plain packaging; EU delivery 3-7 working days\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eNo consumption guidance\u003c\/td\u003e\n\u003ctd\u003eA research listing that gives instructions for use contradicts itself\u003c\/td\u003e\n\u003ctd\u003eNone given\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003cp\u003eOrders placed before 2pm Monday to Friday are processed the same working day. Full terms are on the \u003ca href=\"\/en-ro\/pages\/shipping\"\u003eshipping\u003c\/a\u003e and \u003ca href=\"\/en-ro\/pages\/guarantee\"\u003eguarantee\u003c\/a\u003e pages. The \u003ca href=\"\/en-ro\/blogs\/news\/how-to-choose-a-sarms-supplier-uk-checklist\"\u003eUK supplier checklist\u003c\/a\u003e applies the same tests to any shop, and the \u003ca href=\"\/en-ro\/blogs\/news\/what-are-sarms-the-2026-research-guide\"\u003eresearch guide\u003c\/a\u003e covers the wider legal picture for compounds sold on this basis.\u003c\/p\u003e\n\u003ch2\u003eReading the certificate of analysis for this product\u003c\/h2\u003e\n\u003cp\u003eBioLab is a third-party brand in the Muscle Market range, so the testing position differs from our own label. Every Free Muscle-brand batch is assayed by Janoshik Analytical, an independent laboratory, with the certificate sent on request by email. For BioLab products we show a certificate of analysis only where BioLab supplies one for the specific batch we hold. A generic PDF with no batch number is not a batch certificate, and we do not present one as such. You can contact us with the product name to ask what is held for the current batch. Where a BioLab certificate exists, these are the fields to read.\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eIdentity\u003c\/strong\u003e: the method used to confirm the molecule. HPLC alone matches a retention time against a reference sample; LC-MS adds a mass. With a molecular weight of 290.3, SLU-PP-332 would be expected to appear as a protonated ion close to m\/z 291.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePurity\u003c\/strong\u003e: the share of the detected material that is SLU-PP-332, usually from HPLC peak areas. It says nothing about how much is in each capsule.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eContent\u003c\/strong\u003e: the measured amount per capsule. At a label figure of 200 mcg, this is a very small quantity to find inside a capsule fill, so a content result is the field that tests the label most directly.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eBatch number\u003c\/strong\u003e: must be identical to the number on the pack.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eTest date and laboratory\u003c\/strong\u003e: tie the result to a time and to an accountable tester.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eIf a field is missing, read the gap literally. A certificate with purity but no content confirms the molecule and leaves the 200 mcg figure unverified. A certificate with no batch number describes some material, not necessarily this stock. If BioLab has supplied nothing for the current batch, this listing makes no analytical claim beyond the BioLab label. Our \u003ca href=\"\/en-ro\/pages\/lab-tests\"\u003elab tests page\u003c\/a\u003e and the guide on \u003ca href=\"\/en-ro\/blogs\/news\/how-to-read-a-certificate-of-analysis\"\u003ehow to read a certificate of analysis\u003c\/a\u003e go further, and you can \u003ca href=\"\/en-ro\/pages\/contact\"\u003econtact us\u003c\/a\u003e about any mismatch.\u003c\/p\u003e\n\u003ch2\u003eCapsules compared with other forms\u003c\/h2\u003e\n\u003cp\u003eQueries for \"SLU-PP-332 capsules\" and \"SLU-PP-332 injectable\" reflect the fact that the compound is offered in several formats. The formats differ in how the amount per unit is fixed and in how closely they resemble the published research, not in the molecule itself.\u003c\/p\u003e\n\u003cp\u003eThe published mouse studies were not studies of capsules, and oral exposure in people has never been measured, so oral absorption of this molecule in humans is an open question. Because SLU-PP-332 is a small molecule rather than a peptide, the argument that stomach enzymes break peptides down does not apply to it in the same way, though acid may be relevant to its acylhydrazone link, as the storage section explains.\u003c\/p\u003e\n\u003cp\u003eUniformity is the other practical difference. A capsule holds a weighed powder fill, and at 200 mcg the active ingredient must be spread through a much larger mass of filler; uneven blending is the main risk, and only a content assay on the batch can show whether it happened. A liquid is measured by volume and depends on the compound staying dissolved and intact in its solvent. Loose powder puts all the weighing on the researcher. None of these differences is a claim about effect.\u003c\/p\u003e\n\u003ch2\u003eSLU-PP-332 compared with Cardarine (GW501516)\u003c\/h2\u003e\n\u003cp\u003eThe comparison most searched alongside SLU-PP-332 is with other so-called exercise mimetics, and the one stocked here is \u003ca href=\"\/en-ro\/collections\/cardarine\"\u003eCardarine (GW501516)\u003c\/a\u003e. Both are small molecules that act on nuclear receptors controlling oxidative metabolism in muscle, and both became known through mouse treadmill experiments. There the resemblance largely ends.\u003c\/p\u003e\n\u003cp\u003eCardarine is an agonist of PPAR delta, a different receptor from the ERR family. In a 2008 Cell study, a PPAR delta agonist combined with training increased oxidative muscle fibres and running endurance in mice, while an AMPK activator, AICAR, raised endurance in sedentary mice after four weeks (Narkar et al., 2008). That paper made \"exercise mimetic\" a research term, and SLU-PP-332 was later studied as a route to a similar gene programme through ERR instead. Development history also separates them. GW501516 was a pharmaceutical drug candidate that reached early human studies before development stopped after cancers were found in long-term rodent studies, a history covered in our article on \u003ca href=\"\/en-ro\/blogs\/news\/cardarine-gw-501516-what-happened-in-development\"\u003ewhat happened in Cardarine's development\u003c\/a\u003e. SLU-PP-332 has never entered a human study.\u003c\/p\u003e\n\u003ctable\u003e\n\u003cthead\u003e\u003ctr\u003e\n\u003cth\u003ePoint of comparison\u003c\/th\u003e\n\u003cth\u003eSLU-PP-332\u003c\/th\u003e\n\u003cth\u003eCardarine (GW501516)\u003c\/th\u003e\n\u003c\/tr\u003e\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003eTarget\u003c\/td\u003e\n\u003ctd\u003eERR alpha, beta and gamma (agonist)\u003c\/td\u003e\n\u003ctd\u003ePPAR delta (agonist)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eResearch origin\u003c\/td\u003e\n\u003ctd\u003eReported as an ERR agonist in 2023, academic laboratory\u003c\/td\u003e\n\u003ctd\u003ePharmaceutical drug candidate from around 2001\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eHuman data\u003c\/td\u003e\n\u003ctd\u003eNone\u003c\/td\u003e\n\u003ctd\u003eEarly-phase studies only, development ended\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMain known concern\u003c\/td\u003e\n\u003ctd\u003eSafety simply uncharacterised\u003c\/td\u003e\n\u003ctd\u003eTumours in long-term rodent studies\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eWADA position\u003c\/td\u003e\n\u003ctd\u003eNot named; S0 non-approved substance\u003c\/td\u003e\n\u003ctd\u003eNamed under S4 metabolic modulators\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eUK status\u003c\/td\u003e\n\u003ctd\u003eUnlicensed; research use only\u003c\/td\u003e\n\u003ctd\u003eUnlicensed; research use only\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003cp\u003eNeither compound is licensed for any use in people. The comparison is pharmacological and regulatory only, and nothing here suggests using either one, alone or with anything else.\u003c\/p\u003e\n\u003ch2\u003eDetection, sport and testing\u003c\/h2\u003e\n\u003cp\u003eFor athletes, the relevant point is that SLU-PP-332 is prohibited at all times under section S0 of the WADA list even though it is not named, because it has no approval for human therapeutic use. Anti-doping laboratories have already begun preparing for it. A doping-control group at the German Sport University Cologne characterised SLU-PP-332 and SLU-PP-915 by liquid chromatography with high-resolution tandem mass spectrometry and incubated both with human liver preparations; for SLU-PP-332 they identified nine metabolites, six Phase I products and three Phase II conjugates, and described the work as a basis for uncovering misuse (Möller et al., 2026).\u003c\/p\u003e\n\u003cp\u003eThat study was carried out in vitro. No excretion study in people has been published, so there is no established detection window for SLU-PP-332 in urine or blood, and any figure quoted for how long it remains detectable is unsupported. The accurate summary is that it is detectable in principle, that laboratories have the target metabolites to look for, and that the window has not been established. Anyone bound by an anti-doping code should treat it as prohibited and check the current list, which is updated every year.\u003c\/p\u003e\n\u003ch2\u003eStorage, stability and handling\u003c\/h2\u003e\n\u003cp\u003eNeither BioLab nor anyone else has published stability data for SLU-PP-332 capsules, so storage advice rests on the structure of the molecule and on laboratory practice. The acylhydrazone link at the centre of SLU-PP-332 is the part chemists watch: hydrazone bonds can be cleaved by water under acidic conditions, and the carbon-nitrogen double bond can switch between E and Z forms when exposed to light. Heat speeds both processes. Keeping the capsules dry, dark and cool therefore protects the compound itself as well as the capsule shell.\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eKeep the pack sealed in its original container, with any desiccant left in place.\u003c\/li\u003e\n\u003cli\u003eStore at room temperature or below, away from heat sources and direct sunlight.\u003c\/li\u003e\n\u003cli\u003eAvoid bathrooms, kitchens and other humid places, and close the lid promptly after opening.\u003c\/li\u003e\n\u003cli\u003eDo not transfer capsules to unlabelled containers; the batch number on the pack is what links it to any certificate.\u003c\/li\u003e\n\u003cli\u003eKeep out of reach of children and away from food.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eDiscard capsules that have clumped, softened or changed colour, and follow normal laboratory rules on labelling, gloves and disposal.\u003c\/p\u003e\n\u003ch2\u003eGlossary\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eERR (oestrogen-related receptor)\u003c\/strong\u003e: one of three orphan nuclear receptors, alpha, beta and gamma, that control genes for mitochondrial energy production. They do not bind oestrogen.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePan-agonist\u003c\/strong\u003e: a compound that activates every member of a receptor family rather than one.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eOrphan nuclear receptor\u003c\/strong\u003e: a receptor for which no hormone produced by the body has been confirmed as its ligand.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eExercise mimetic\u003c\/strong\u003e: a research term for a compound that triggers some of the molecular changes seen after exercise, used of animal and cell findings.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMitochondrial biogenesis\u003c\/strong\u003e: the formation of new mitochondria inside cells.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePPAR delta\u003c\/strong\u003e: a separate nuclear receptor, the target of Cardarine (GW501516).\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eAcylhydrazone\u003c\/strong\u003e: the chemical link joining the two ring systems of SLU-PP-332, sensitive to acid and moisture.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eHPLC\u003c\/strong\u003e: high-performance liquid chromatography, the usual method for purity figures.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eLC-MS\u003c\/strong\u003e: liquid chromatography with mass spectrometry, which confirms identity by molecular mass.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMetabolite\u003c\/strong\u003e: a product the body forms from a compound; anti-doping tests often target metabolites.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSection S0\u003c\/strong\u003e: the WADA category for substances with no current approval for human therapeutic use.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCertificate of analysis (COA)\u003c\/strong\u003e: a laboratory report of identity, purity and content for a named batch.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2\u003eAbout BioLab Metabolic Boost 200 mcg\u003c\/h2\u003e\n\u003cp\u003eBioLab sells its SLU-PP-332 capsules as Metabolic Boost, a trade name for the product rather than a statement about any effect. This tub is the middle strength of three: 200 mcg per capsule and 60 capsules, 12 mg in total, between the \u003ca href=\"\/en-ro\/products\/biolab-metabolic-boost-slu-pp-332-100-mcg-60-caps\"\u003e100 mcg tub\u003c\/a\u003e at 6 mg and the \u003ca href=\"\/en-ro\/products\/biolab-metabolic-boost-slu-pp-332-500-mcg-60-caps\"\u003e500 mcg tub\u003c\/a\u003e at 30 mg. The three share one design, a purple-blue tub with orange trim, the tiger emblem and SLU-PP-332 beneath the product name, so the 200 MCG\/CAPS tag and the 200 mcg starburst are what identify this strength.\u003c\/p\u003e\n\u003cp\u003eWho makes it is not stated. By BioLab's own account it distributes its research-only preparations rather than producing them, and it marks them as not for consumption. A fourth SLU-PP-332 product that BioLab sells in 30-capsule tubs under another name is not stocked here.\u003c\/p\u003e\n\u003ch3\u003eLab reports for this strength\u003c\/h3\u003e\n\u003cp\u003eNo BioLab report is attached to this listing at present. The one Metabolic Boost report we hold was run on a 100 mcg sample in October 2024 and does not describe a 200 mcg fill. BioLab states that each product's current report is posted in its gallery and Tests tab on the brand's shop and can be requested. A report that tests this label would give the measured content per capsule against 200 mcg, the date and the lot number; \u003ca href=\"\/en-ro\/pages\/contact\"\u003econtact us\u003c\/a\u003e with the lot on your tub to ask what is held for it.\u003c\/p\u003e\n\u003cp\u003eAmong other brands, \u003ca href=\"\/en-ro\/products\/thoroughbred-labs-slu\"\u003eThoroughbred Labs SLU-PP-332\u003c\/a\u003e is labelled at 250 mcg per capsule in a 60-capsule tub (15 mg), a little above this one; the two sit together in the \u003ca href=\"\/en-ro\/collections\/slu-pp-332\"\u003eSLU-PP-332 collection\u003c\/a\u003e, and each brand's range is on its own page, \u003ca href=\"\/en-ro\/collections\/brand-biolab\"\u003eBioLab\u003c\/a\u003e or \u003ca href=\"\/en-ro\/collections\/brand-thoroughbred-labs\"\u003eThoroughbred Labs\u003c\/a\u003e. The compound is an experimental ERR agonist developed at Saint Louis University, studied only in mice and cells, unlicensed in the UK and, for anyone subject to anti-doping rules, prohibited by WADA in and out of competition.\u003c\/p\u003e\n\u003ch2\u003eRelated\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003e\u003ca href=\"\/en-ro\/collections\/slu-pp-332\"\u003eAll brands of SLU-PP-332 we stock, compared\u003c\/a\u003e\u003c\/li\u003e\n\u003cli\u003e\u003ca href=\"\/en-ro\/collections\/brand-biolab\"\u003eAll BioLab products\u003c\/a\u003e\u003c\/li\u003e\n\u003cli\u003e\u003ca href=\"\/en-ro\/blogs\/news\/slu-pp-332-and-5-amino-1mq-research-guide\"\u003eSLU-PP-332 and 5-Amino-1MQ research guide\u003c\/a\u003e\u003c\/li\u003e\n\u003cli\u003e\n\u003ca href=\"\/en-ro\/collections\/cardarine\"\u003eCardarine (GW501516)\u003c\/a\u003e and \u003ca href=\"\/en-ro\/collections\/5-amino-1mq\"\u003e5-Amino-1MQ\u003c\/a\u003e\n\u003c\/li\u003e\n\u003cli\u003e\u003ca href=\"\/en-ro\/pages\/lab-tests\"\u003eBatch testing and certificates of analysis\u003c\/a\u003e\u003c\/li\u003e\n\u003cli\u003e\n\u003ca href=\"\/en-ro\/pages\/shipping\"\u003eDelivery\u003c\/a\u003e and \u003ca href=\"\/en-ro\/pages\/guarantee\"\u003ereturns\u003c\/a\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cem\u003eResearch compounds sold by Free Muscle are supplied for laboratory research use only and are not for human consumption. They are not authorised as medicines by the MHRA, EMA or FDA, are not food supplements, and are sold only to adults aged 18 or over. Nothing on this page is medical or dosing advice. Summaries of published research describe study findings and are not claims about any product.\u003c\/em\u003e\u003c\/p\u003e\n\u003ch2\u003eReferences\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003eBillon C, et al. Synthetic ERRalpha\/beta\/gamma Agonist Induces an ERRalpha-Dependent Acute Aerobic Exercise Response and Enhances Exercise Capacity. ACS Chem Biol. 2023;18(4):756-771. \u003ca href=\"https:\/\/pubmed.ncbi.nlm.nih.gov\/36988910\/\" rel=\"noopener\"\u003ePMID: 36988910\u003c\/a\u003e.\u003c\/li\u003e\n\u003cli\u003eBillon C, et al. A Synthetic ERR Agonist Alleviates Metabolic Syndrome. J Pharmacol Exp Ther. 2024;388(2):232-240. \u003ca href=\"https:\/\/pubmed.ncbi.nlm.nih.gov\/37739806\/\" rel=\"noopener\"\u003ePMID: 37739806\u003c\/a\u003e.\u003c\/li\u003e\n\u003cli\u003eMöller T, et al. In Vitro Metabolism and Analytical Characterization of SLU-PP-332 and SLU-PP-915: Novel Pan-ERR Agonists With Doping Potential. Rapid Commun Mass Spectrom. 2026;40(8):e70039. \u003ca href=\"https:\/\/pubmed.ncbi.nlm.nih.gov\/41588687\/\" rel=\"noopener\"\u003ePMID: 41588687\u003c\/a\u003e.\u003c\/li\u003e\n\u003cli\u003eNarkar VA, et al. AMPK and PPARdelta agonists are exercise mimetics. Cell. 2008;134(3):405-415. \u003ca href=\"https:\/\/pubmed.ncbi.nlm.nih.gov\/18674809\/\" rel=\"noopener\"\u003ePMID: 18674809\u003c\/a\u003e.\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"BioLab","offers":[{"title":"Default Title","offer_id":48468978761954,"sku":null,"price":145.99,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0772\/3499\/5426\/files\/metabolic-boost-slu-pp-332-200-mcg-60-caps_1a9b364b-93a7-4d08-b164-0b9fff7ee2cb.jpg?v=1789931391"},{"product_id":"biolab-metabolic-boost-slu-pp-332-500-mcg-60-caps","title":"BioLab Metabolic Boost (SLU-PP-332) 500 mcg, 60 caps","description":"\u003cp\u003e\u003cstrong\u003eBioLab Metabolic Boost (SLU-PP-332) 500 mcg, 60 caps\u003c\/strong\u003e is a BioLab listing of SLU-PP-332, labelled at 500 mcg (0.5 mg) per capsule, 60 capsules per pack. It is supplied through the \u003ca href=\"\/en-ro\/pages\/muscle-market\"\u003eMuscle Market\u003c\/a\u003e range for laboratory research only, is not for human consumption, and is sold to adults aged 18 and over. Below: what the published research on SLU-PP-332 reports, what the label documents, how batch certificates are handled for BioLab products, and how the compound differs from 5-Amino-1MQ.\u003c\/p\u003e\n\u003ch2\u003eAbout SLU-PP-332\u003c\/h2\u003e\n\u003cp\u003eSLU-PP-332, also written SLU PP 332, is a synthetic pan-agonist of the oestrogen-related receptors ERR alpha, beta and gamma. These are orphan nuclear receptors, unrelated to the oestrogen receptor despite the name, that regulate mitochondrial biogenesis and oxidative metabolism in muscle and heart. The compound was developed by Burris, Walker and colleagues at Saint Louis University and first published in 2023.\u003c\/p\u003e\n\u003cp\u003eIn the 2023 ACS Chemical Biology paper, mice given SLU-PP-332 showed a pattern of gene expression in muscle resembling the acute response to aerobic exercise and showed more oxidative type IIa muscle fibres and greater exercise endurance; the authors reported that ERR alpha activation was critical for the endurance effect (Billon et al., 2023). A 2024 follow-up in diet-induced obese mice and in ob\/ob mice reported increased energy expenditure and fatty acid oxidation, less fat mass accumulation and improved insulin sensitivity (Billon et al., 2024). The authors of both papers include stockholders in a company focused on ERR-based therapeutics. There is no human data of any kind, no human pharmacokinetic study, and no safety study in people. Nothing above is a claim about this product.\u003c\/p\u003e\n\u003cp\u003eIn structural terms SLU-PP-332 is a compact aromatic molecule rather than a peptide or a steroid. PubChem records it as CID 5338394, CAS 303760-60-3, with the formula C18H14N2O2 and a molecular weight of 290.3 g\/mol; its IUPAC name is 4-hydroxy-N-[(E)-naphthalen-2-ylmethylideneamino]benzamide. These are the identifiers any analytical report on this product should agree with.\u003c\/p\u003e\n\u003ch2\u003eThis listing\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003eBrand: \u003ca href=\"\/en-ro\/collections\/brand-biolab\"\u003eBioLab\u003c\/a\u003e\n\u003c\/li\u003e\n\u003cli\u003eCompound: SLU-PP-332\u003c\/li\u003e\n\u003cli\u003eForm: Capsules\u003c\/li\u003e\n\u003cli\u003ePack size: 60 capsules\u003c\/li\u003e\n\u003cli\u003eStrength: 500 mcg (0.5 mg) per capsule, as printed on the BioLab label\u003c\/li\u003e\n\u003cli\u003eTotal in pack: 30 mg (500 mcg x 60 capsules)\u003c\/li\u003e\n\u003cli\u003eBatch certificate of analysis: shown where BioLab supplies one for the batch we hold\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eThis is the highest per-capsule figure BioLab lists for SLU-PP-332. The same 60-capsule format is also sold at \u003ca href=\"\/en-ro\/products\/biolab-metabolic-boost-slu-pp-332-100-mcg-60-caps\"\u003e100 mcg\u003c\/a\u003e (6 mg per pack) and \u003ca href=\"\/en-ro\/products\/biolab-metabolic-boost-slu-pp-332-200-mcg-60-caps\"\u003e200 mcg\u003c\/a\u003e (12 mg per pack), so this pack holds five times the labelled content of the smallest one. \u003ca href=\"\/en-ro\/products\/thoroughbred-labs-slu\"\u003eThoroughbred Labs SLU-PP-332\u003c\/a\u003e is a separate 60-capsule listing whose label states 250 mcg per capsule, 15 mg per pack, half the per-capsule figure of this tub. When comparing listings, divide cost by total milligrams, as set out in our \u003ca href=\"\/en-ro\/blogs\/news\/price-per-mg-compare-sarms-peptides\"\u003eprice per milligram guide\u003c\/a\u003e.\u003c\/p\u003e\n\u003ch2\u003eSLU-PP-332 in the UK: buying, legal status and what to check\u003c\/h2\u003e\n\u003cp\u003eSearch terms like \"SLU PP 332 UK buy\", \"SLU PP 332 UK sale\" and \"SLU PP 332 UK source\" suggest many people assume the compound is an ordinary retail product. It is not, and the legal framework explains why.\u003c\/p\u003e\n\u003ch3\u003eWhere the law stands\u003c\/h3\u003e\n\u003cp\u003eNo regulator anywhere has licensed SLU-PP-332. In the UK it is not a licensed medicine, it has never been assessed by the MHRA, and it is not an authorised food supplement or novel food, so it cannot lawfully be marketed as something to swallow. It is not a controlled drug either. The route left open is supply for laboratory research to adults, and that is the only basis on which this listing exists: 18+ only, and not for human consumption. A marketplace page describing it as a supplement, or a \"compounding\" service offering it as a treatment, is presenting it as something no authority has approved. In sport, SLU-PP-332 is prohibited at all times: as a substance with no current approval for human therapeutic use it is caught by section S0 (non-approved substances) of the WADA Prohibited List, whether or not the list names it.\u003c\/p\u003e\n\u003ch3\u003eQuestions worth putting to any UK seller\u003c\/h3\u003e\n\u003col\u003e\n\u003cli\u003e\n\u003cstrong\u003eWhose product is it?\u003c\/strong\u003e A named brand can be held to its label. Here the brand is BioLab, which describes itself as the distributor of its research preparations.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWhat is the stated content, in which unit?\u003c\/strong\u003e Micrograms and milligrams differ by a factor of a thousand. This pack states 500 mcg per capsule and 60 capsules, 30 mg in total.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eIs there a certificate for the batch actually in stock?\u003c\/strong\u003e For BioLab we show one only where BioLab has supplied it for the batch we hold, and say so where it has not.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eIs the seller identifiable?\u003c\/strong\u003e FreeMuscle is registered in Andorra, has its UK operations and dispatch in Scunthorpe, sells only to adults, and accepts returns of unopened items within 30 days.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eHow does it travel?\u003c\/strong\u003e Every UK order ships free by tracked delivery in plain packaging; orders placed before 2pm Monday to Friday are processed the same working day, and EU delivery takes 3-7 working days.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eDoes the listing tell you how to use it?\u003c\/strong\u003e A research listing should not, and this one does not.\u003c\/li\u003e\n\u003c\/ol\u003e\n\u003cp\u003eReviews that describe personal outcomes cannot confirm what a capsule contained, so we do not publish them. Terms are on our \u003ca href=\"\/en-ro\/pages\/shipping\"\u003eshipping\u003c\/a\u003e and \u003ca href=\"\/en-ro\/pages\/guarantee\"\u003eguarantee\u003c\/a\u003e pages, and the \u003ca href=\"\/en-ro\/blogs\/news\/how-to-choose-a-sarms-supplier-uk-checklist\"\u003eUK supplier checklist\u003c\/a\u003e applies the same tests to any shop.\u003c\/p\u003e\n\u003ch2\u003eCapsules compared with other forms\u003c\/h2\u003e\n\u003cp\u003eSLU-PP-332 is offered as capsules, as liquids and as vials marketed for injection, which is why \"SLU-PP-332 capsules\" and \"SLU-PP-332 injectable\" are both frequent searches. The literature answers part of that question directly. None of the published animal studies tested a capsule. In a 2026 paper introducing a successor molecule, SLU-PP-915, the same research group stated that SLU-PP-332 improves aerobic performance in mice but lacks oral bioavailability, and presented oral activity as the reason for developing the new compound (Billon et al., 2026). The authors disclose that one of them is an inventor on the university's rights and holds shares in companies developing ERR agonists. No study has measured SLU-PP-332 exposure after oral intake in any species, so this page makes no claim about what a capsule does.\u003c\/p\u003e\n\u003cp\u003eBecause SLU-PP-332 is a small molecule, the usual explanation for poor oral uptake of peptides, digestion by stomach and gut enzymes, does not describe its problem; the abstract does not give a cause. Our article \u003ca href=\"\/en-ro\/blogs\/news\/do-oral-peptides-work\"\u003edo oral peptides work\u003c\/a\u003e covers the separate peptide case.\u003c\/p\u003e\n\u003cp\u003eThe practical differences between forms are about measurement and stability. A capsule fixes the amount at the filling stage: at 500 mcg the active is still well under a milligram per capsule, so its accuracy depends on how evenly the powder blend was mixed before filling. A liquid moves that uncertainty to the solvent and the measuring device, and keeps the acylhydrazone link in contact with water for its whole shelf life. Only a batch content assay can show whether either format matches its label.\u003c\/p\u003e\n\u003ch2\u003eSLU-PP-332 compared with 5-Amino-1MQ\u003c\/h2\u003e\n\u003cp\u003e\u003ca href=\"\/en-ro\/collections\/5-amino-1mq\"\u003e5-Amino-1MQ\u003c\/a\u003e is often discussed alongside SLU-PP-332, and our research guide covers the two together, because both are small molecules studied in obese mice and both are sold under metabolic headings. Their mechanisms are unrelated. SLU-PP-332 switches on transcription factors, the ERR receptors, that drive genes for mitochondrial energy production. 5-Amino-1MQ (5-amino-1-methylquinolinium) works on an enzyme instead: it inhibits nicotinamide N-methyltransferase (NNMT), which methylates nicotinamide and in doing so draws on the cell's pools of NAD+ and the methyl donor SAM.\u003c\/p\u003e\n\u003cp\u003eThe key 5-Amino-1MQ paper came from the University of Texas Medical Branch. Methylquinolinium inhibitors of NNMT, the chemical series to which 5-Amino-1MQ belongs, were selective against related methyltransferases, lowered the NNMT product 1-methylnicotinamide, raised intracellular NAD+ and SAM, and suppressed fat formation in cultured fat cells. In diet-induced obese mice, a potent inhibitor from the series given systemically reduced body weight, white fat mass and plasma cholesterol without a change in food intake, and the authors saw no observable adverse effects (Neelakantan et al., 2018). That was a short study in mice, not a toxicology programme, and no human trial has been published for either compound.\u003c\/p\u003e\n\u003ctable\u003e\n\u003cthead\u003e\u003ctr\u003e\n\u003cth\u003eFeature\u003c\/th\u003e\n\u003cth\u003eSLU-PP-332\u003c\/th\u003e\n\u003cth\u003e5-Amino-1MQ\u003c\/th\u003e\n\u003c\/tr\u003e\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003eTarget type\u003c\/td\u003e\n\u003ctd\u003eNuclear receptors (ERR alpha, beta, gamma)\u003c\/td\u003e\n\u003ctd\u003eEnzyme (NNMT)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eAction\u003c\/td\u003e\n\u003ctd\u003eAgonist\u003c\/td\u003e\n\u003ctd\u003eInhibitor\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003ePubChem CID and formula\u003c\/td\u003e\n\u003ctd\u003e5338394, C18H14N2O2 (neutral)\u003c\/td\u003e\n\u003ctd\u003e950107, C10H11N2+ (a cation)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMolecular weight\u003c\/td\u003e\n\u003ctd\u003e290.3 g\/mol\u003c\/td\u003e\n\u003ctd\u003e159.2 g\/mol\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eEvidence base\u003c\/td\u003e\n\u003ctd\u003eMouse and cell studies from 2023 onwards\u003c\/td\u003e\n\u003ctd\u003eCell and mouse studies from 2018 onwards\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eLicensed anywhere\u003c\/td\u003e\n\u003ctd\u003eNo\u003c\/td\u003e\n\u003ctd\u003eNo\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eWADA position\u003c\/td\u003e\n\u003ctd\u003eProhibited at all times (at least under S0, non-approved substances)\u003c\/td\u003e\n\u003ctd\u003eProhibited at all times (at least under S0, non-approved substances)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003cp\u003eBeing charged, 5-Amino-1MQ behaves differently in analysis and in solution from the neutral SLU-PP-332, which is one reason their certificates are not interchangeable. The comparison is chemical and regulatory only. It says nothing about using either compound, singly or alongside any other.\u003c\/p\u003e\n\u003ch2\u003eReading the certificate of analysis for this product\u003c\/h2\u003e\n\u003cp\u003eBioLab is a third-party brand in the Muscle Market range, so the testing position differs from our own label. Every Free Muscle-brand batch is assayed by Janoshik Analytical, an independent laboratory, with the certificate sent on request by email. For BioLab products we show a certificate of analysis only where BioLab supplies one for the specific batch we hold. A generic PDF with no batch number is not a batch certificate, and we do not present one as such. Email us with the product name and we will send what we hold, or say plainly that there is none.\u003c\/p\u003e\n\u003cp\u003eNo BioLab certificate is attached to this 500 mcg listing yet. When one is supplied for this pack, read it against the following:\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eIdentity method.\u003c\/strong\u003e HPLC compares a retention time with a reference standard, which is only as good as that standard; for a compound this new, reference material is scarce. LC-MS adds a measured mass, and for SLU-PP-332 the protonated molecule should appear near m\/z 291.1.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePurity percentage.\u003c\/strong\u003e The proportion of the detected signal attributable to SLU-PP-332. A capsule mostly made of filler can still show high purity, because purity describes the active fraction, not its amount.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eContent per capsule.\u003c\/strong\u003e The result that tests the 500 mcg on the label.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eBatch number.\u003c\/strong\u003e Compare it with the code on the bottle; any difference, even one digit, means the report covers other stock.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eDate and laboratory.\u003c\/strong\u003e A named laboratory and test date place the result in time; a certificate years older than the pack describes earlier stock.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eWhat a gap means is fairly literal. With no content figure, the 500 mcg claim rests on BioLab's label alone. With no batch number, the report cannot be linked to this stock. With no certificate at all, this listing makes no analytical claim beyond what BioLab prints. See our \u003ca href=\"\/en-ro\/pages\/lab-tests\"\u003elab tests page\u003c\/a\u003e, the guide on \u003ca href=\"\/en-ro\/blogs\/news\/how-to-read-a-certificate-of-analysis\"\u003ehow to read a certificate of analysis\u003c\/a\u003e, or \u003ca href=\"\/en-ro\/pages\/contact\"\u003econtact us\u003c\/a\u003e about a specific batch.\u003c\/p\u003e\n\u003ch2\u003eDetection, sport and testing\u003c\/h2\u003e\n\u003cp\u003eUnder the WADA Code, SLU-PP-332 is caught by section S0, which covers any pharmacological substance without current approval for human therapeutic use, so it is prohibited in and out of competition whether or not the list names it. Anti-doping laboratories have already published in vitro work on its metabolism: the UCLA Olympic Analytical Laboratory incubated SLU-PP-332 with pooled human liver S9 fractions and, using high-resolution LC-MS, identified 22 metabolites, including hydroxylated, glucuronidated and sulfated forms, several of them proposed as targets for doping control (Avliyakulov et al., 2026). The authors note that further work is needed to confirm the structures.\u003c\/p\u003e\n\u003cp\u003eWhat has not been published is an excretion study in people, so there is no validated detection window in urine or blood. Any number of days quoted online is unsupported. The accurate position is that the compound is detectable in principle and the window has not been established. Competitors in tested sport, including events run under UK Anti-Doping rules, should treat it as prohibited and check the current list, which changes every January.\u003c\/p\u003e\n\u003ch2\u003eStorage, stability and handling\u003c\/h2\u003e\n\u003cp\u003eBioLab has published no stability study for these capsules, so the sensible approach follows from the chemistry. The weak point of SLU-PP-332 is the acylhydrazone bridge between its two ring systems. Moisture, particularly with any acidity, can split that bond back into its starting fragments, and light can convert the E arrangement of the carbon-nitrogen double bond into the Z form, a different shape. Warmth accelerates both.\u003c\/p\u003e\n\u003cp\u003eIn practice that means leaving the capsules in the original BioLab container with the lid closed and any desiccant in place, stored at or below room temperature in a dark cupboard rather than on a windowsill or near a radiator, kettle or shower. Keep the original label, since the batch number is the only link between the pack and any certificate. Capsules that have stuck together, softened or discoloured should be set aside and disposed of according to local rules rather than examined further. Keep the pack out of reach of children and apart from food, and handle it with the ordinary laboratory precautions of gloves, clear labelling and a clean work surface.\u003c\/p\u003e\n\u003ch2\u003eGlossary\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eOestrogen-related receptor (ERR)\u003c\/strong\u003e: named for sequence similarity to the oestrogen receptor, the ERR alpha, beta and gamma proteins do not respond to oestrogen and govern energy-producing genes.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eAgonist\u003c\/strong\u003e: a molecule that activates a receptor; SLU-PP-332 activates all three ERRs.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eNuclear receptor\u003c\/strong\u003e: a protein inside the cell that binds a molecule and then switches sets of genes on or off.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eOxidative metabolism\u003c\/strong\u003e: energy production that uses oxygen, carried out in mitochondria.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eOral bioavailability\u003c\/strong\u003e: how much of a compound taken in by mouth survives absorption and first passage through the liver to circulate intact, expressed as a percentage.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eNNMT\u003c\/strong\u003e: nicotinamide N-methyltransferase, the enzyme inhibited by 5-Amino-1MQ.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eNAD+\u003c\/strong\u003e: a coenzyme central to cellular energy reactions.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eAcylhydrazone\u003c\/strong\u003e: a C(=O)-NH-N=C bridge; in SLU-PP-332 it joins the naphthalene and hydroxybenzoyl parts and is the likeliest site of breakdown.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eLabel claim\u003c\/strong\u003e: the amount per capsule printed on the BioLab label, here 500 mcg.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003em\/z\u003c\/strong\u003e: mass-to-charge ratio, the value a mass spectrometer reports for an ion.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2\u003eAbout BioLab Metabolic Boost 500 mcg\u003c\/h2\u003e\n\u003cp\u003eThis is the top strength in BioLab's Metabolic Boost line, the brand's trade name for its SLU-PP-332 capsules; the name belongs to the product and says nothing about effects. With 500 mcg per capsule and 60 capsules, the tub is labelled at 30 mg in total, five times the 100 mcg tub and two and a half times the 200 mcg tub. On the front, a 500 MCG\/CAPS arrow tag, a 60 CAPS tag and a yellow 500 mcg starburst mark the strength, while the purple-blue tub, orange trim, tiger head and BIOLAB band match the lower strengths.\u003c\/p\u003e\n\u003cp\u003eBioLab keeps its research compounds in a category separate from its supplements, marks them as not for consumption and says it acts only as their distributor, leaving the maker unnamed.\u003c\/p\u003e\n\u003ch3\u003eComparing the three BioLab strengths\u003c\/h3\u003e\n\u003ctable\u003e\n\u003cthead\u003e\u003ctr\u003e\n\u003cth\u003eListing\u003c\/th\u003e\n\u003cth\u003ePer capsule\u003c\/th\u003e\n\u003cth\u003eCapsules\u003c\/th\u003e\n\u003cth\u003eTotal per tub\u003c\/th\u003e\n\u003cth\u003eBioLab report on our listing\u003c\/th\u003e\n\u003c\/tr\u003e\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003ca href=\"\/en-ro\/products\/biolab-metabolic-boost-slu-pp-332-100-mcg-60-caps\"\u003eMetabolic Boost 100 mcg\u003c\/a\u003e\u003c\/td\u003e\n\u003ctd\u003e100 mcg\u003c\/td\u003e\n\u003ctd\u003e60\u003c\/td\u003e\n\u003ctd\u003e6 mg\u003c\/td\u003e\n\u003ctd\u003eYes, October 2024\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003ca href=\"\/en-ro\/products\/biolab-metabolic-boost-slu-pp-332-200-mcg-60-caps\"\u003eMetabolic Boost 200 mcg\u003c\/a\u003e\u003c\/td\u003e\n\u003ctd\u003e200 mcg\u003c\/td\u003e\n\u003ctd\u003e60\u003c\/td\u003e\n\u003ctd\u003e12 mg\u003c\/td\u003e\n\u003ctd\u003eNone at present\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMetabolic Boost 500 mcg (this listing)\u003c\/td\u003e\n\u003ctd\u003e500 mcg\u003c\/td\u003e\n\u003ctd\u003e60\u003c\/td\u003e\n\u003ctd\u003e30 mg\u003c\/td\u003e\n\u003ctd\u003eNone at present\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003ch3\u003eDocuments for this strength\u003c\/h3\u003e\n\u003cp\u003eBioLab says it posts the current report for each product in the gallery and Tests tab of its own shop and supplies it on request. None is shown here for the 500 mcg tub, and the 2024 report on the 100 mcg listing does not cover this fill. A report that could confirm this label would state content per capsule against 500 mcg, with a date and a lot number; mention the lot on your tub when asking what documents are held. The other brand we stock, \u003ca href=\"\/en-ro\/products\/thoroughbred-labs-slu\"\u003eThoroughbred Labs\u003c\/a\u003e, prints 250 mcg per capsule on a 60-capsule tub (15 mg in total); the \u003ca href=\"\/en-ro\/collections\/slu-pp-332\"\u003eSLU-PP-332 collection\u003c\/a\u003e sets the brands against each other, with the full ranges on the \u003ca href=\"\/en-ro\/collections\/brand-biolab\"\u003eBioLab\u003c\/a\u003e and \u003ca href=\"\/en-ro\/collections\/brand-thoroughbred-labs\"\u003eThoroughbred Labs\u003c\/a\u003e pages.\u003c\/p\u003e\n\u003cp\u003eThe compound itself is a preclinical research molecule: a pan-ERR agonist from Saint Louis University with no human data, no UK licence and a WADA prohibition that applies at all times.\u003c\/p\u003e\n\u003ch2\u003eRelated\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003e\u003ca href=\"\/en-ro\/collections\/slu-pp-332\"\u003eAll brands of SLU-PP-332 we stock, compared\u003c\/a\u003e\u003c\/li\u003e\n\u003cli\u003e\u003ca href=\"\/en-ro\/collections\/brand-biolab\"\u003eAll BioLab products\u003c\/a\u003e\u003c\/li\u003e\n\u003cli\u003e\n\u003ca href=\"\/en-ro\/collections\/5-amino-1mq\"\u003e5-Amino-1MQ\u003c\/a\u003e and \u003ca href=\"\/en-ro\/collections\/cardarine\"\u003eCardarine (GW-501516)\u003c\/a\u003e\n\u003c\/li\u003e\n\u003cli\u003e\u003ca href=\"\/en-ro\/blogs\/news\/slu-pp-332-and-5-amino-1mq-research-guide\"\u003eSLU-PP-332 and 5-Amino-1MQ research guide\u003c\/a\u003e\u003c\/li\u003e\n\u003cli\u003e\u003ca href=\"\/en-ro\/blogs\/news\/what-are-sarms-the-2026-research-guide\"\u003eResearch guide to SARMs and related compounds\u003c\/a\u003e\u003c\/li\u003e\n\u003cli\u003e\u003ca href=\"\/en-ro\/pages\/lab-tests\"\u003eBatch testing and certificates of analysis\u003c\/a\u003e\u003c\/li\u003e\n\u003cli\u003e\n\u003ca href=\"\/en-ro\/pages\/shipping\"\u003eDelivery\u003c\/a\u003e and \u003ca href=\"\/en-ro\/pages\/guarantee\"\u003ereturns\u003c\/a\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cem\u003eResearch compounds sold by Free Muscle are supplied for laboratory research use only and are not for human consumption. They are not authorised as medicines by the MHRA, EMA or FDA, are not food supplements, and are sold only to adults aged 18 or over. Nothing on this page is medical or dosing advice. Summaries of published research describe study findings and are not claims about any product.\u003c\/em\u003e\u003c\/p\u003e\n\u003ch2\u003eReferences\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003eBillon C, et al. Synthetic ERRalpha\/beta\/gamma Agonist Induces an ERRalpha-Dependent Acute Aerobic Exercise Response and Enhances Exercise Capacity. ACS Chem Biol. 2023;18(4):756-771. \u003ca href=\"https:\/\/pubmed.ncbi.nlm.nih.gov\/36988910\/\" rel=\"noopener\"\u003ePMID: 36988910\u003c\/a\u003e.\u003c\/li\u003e\n\u003cli\u003eBillon C, et al. A Synthetic ERR Agonist Alleviates Metabolic Syndrome. J Pharmacol Exp Ther. 2024;388(2):232-240. \u003ca href=\"https:\/\/pubmed.ncbi.nlm.nih.gov\/37739806\/\" rel=\"noopener\"\u003ePMID: 37739806\u003c\/a\u003e.\u003c\/li\u003e\n\u003cli\u003eBillon C, et al. An orally active estrogen receptor-related receptor agonist, SLU-PP-915, enhances aerobic exercise capacity. J Pharmacol Exp Ther. 2026;393(1):103787. \u003ca href=\"https:\/\/pubmed.ncbi.nlm.nih.gov\/41421047\/\" rel=\"noopener\"\u003ePMID: 41421047\u003c\/a\u003e.\u003c\/li\u003e\n\u003cli\u003eAvliyakulov NK, et al. Analysis and Identification of In Vitro Metabolites of Exercise Mimetic SLU-PP-332 ERRalpha\/beta\/gamma Agonist for Doping-Control Purposes. Drug Test Anal. 2026;18(3):439-450. \u003ca href=\"https:\/\/pubmed.ncbi.nlm.nih.gov\/41688415\/\" rel=\"noopener\"\u003ePMID: 41688415\u003c\/a\u003e.\u003c\/li\u003e\n\u003cli\u003eNeelakantan H, et al. Selective and membrane-permeable small molecule inhibitors of nicotinamide N-methyltransferase reverse high fat diet-induced obesity in mice. Biochem Pharmacol. 2018;147:141-152. \u003ca href=\"https:\/\/pubmed.ncbi.nlm.nih.gov\/29155147\/\" rel=\"noopener\"\u003ePMID: 29155147\u003c\/a\u003e.\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"BioLab","offers":[{"title":"Default Title","offer_id":48468978794722,"sku":null,"price":205.99,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0772\/3499\/5426\/files\/metabolic-boost-slu-pp-332-500-mcg-60-caps_2025fe19-4aad-435d-bec7-acbebe9e6a63.jpg?v=1789931393"},{"product_id":"imuscle-andarine-s4-60-15mg","title":"iMuscle Andarine S-4 — 60 caps, 15mg","description":"\u003cp\u003eiMuscle Andarine S-4 is supplied as 60 capsules stated at 15 mg each, for a total of 900 mg of andarine per pack. Andarine (S-4) is an early non-steroidal selective androgen receptor modulator whose published evidence comes from animal studies. The product is manufactured by iMuscle and stocked by Free Muscle for laboratory research by adults, with free tracked UK delivery.\u003c\/p\u003e\u003ch2\u003eAbout Andarine (S-4)\u003c\/h2\u003e\u003cp\u003eAndarine, usually written S-4 or S4 and coded GTx-007 during development, is one of the earliest non-steroidal selective androgen receptor modulators. It came from the aryl-propionamide series developed at the University of Tennessee and GTx Inc. in the early 2000s. Like testosterone, it binds and activates the androgen receptor. The series aimed at action on muscle and bone with less effect on other androgen-sensitive tissue; for andarine, that aim was tested only in animals.\u003c\/p\u003e\u003cp\u003eThe published data for S-4 are preclinical. In a 2007 study of 120 female rats, ovariectomised to model accelerated bone loss and treated for 120 days, S-4 maintained whole-body and trabecular bone mineral density and cortical bone content, increased the strength of the femur on mechanical testing and reduced body fat (Kearbey et al., 2007). No controlled human trial of andarine has been published, and the development programme was discontinued. In informal reports the most frequently described effect is a yellow tint to vision and slower adaptation to darkness, attributed in those accounts to the molecule binding in the retina; that finding has not been characterised in a clinical study.\u003c\/p\u003e\u003cp\u003eAndarine has never been approved as a medicine and is named under section S1.2 of the WADA Prohibited List. The animal findings summarised here are not claims about this product.\u003c\/p\u003e\u003ch3\u003eChemical identity\u003c\/h3\u003e\u003cp\u003eThese PubChem identifiers define the substance a certificate for this pack should report. The (2S) marks the molecule's single stereocentre.\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eSystematic name\u003c\/strong\u003e: (2S)-3-(4-acetamidophenoxy)-2-hydroxy-2-methyl-N-[4-nitro-3-(trifluoromethyl)phenyl]propanamide\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCAS number\u003c\/strong\u003e: 401900-40-1\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFormula and molecular weight\u003c\/strong\u003e: C19H18F3N3O6, 441.4 g\/mol\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eInChIKey\u003c\/strong\u003e: YVXVTLGIDOACBJ-SFHVURJKSA-N\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePubChem CID\u003c\/strong\u003e: 9824562\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch2\u003eThis listing\u003c\/h2\u003e\u003cul\u003e\n\u003cli\u003eCompound: Andarine (S-4)\u003c\/li\u003e\n\u003cli\u003eBrand: iMuscle\u003c\/li\u003e\n\u003cli\u003eForm: capsules\u003c\/li\u003e\n\u003cli\u003ePack size: 60 capsules\u003c\/li\u003e\n\u003cli\u003eStated strength: 15 mg per capsule (manufacturer's label claim)\u003c\/li\u003e\n\u003cli\u003eStated total per pack: 900 mg\u003c\/li\u003e\n\u003cli\u003eIntended use: laboratory research only, not for human consumption\u003c\/li\u003e\n\u003cli\u003eSold to adults aged 18 and over\u003c\/li\u003e\n\u003c\/ul\u003e\u003cp\u003eThe strength is the manufacturer's label claim; only a batch certificate confirms it. To compare brands of Andarine, use total milligrams per pack, as explained in \u003ca href=\"\/en-ro\/blogs\/news\/price-per-mg-compare-sarms-peptides\"\u003eprice per milligram\u003c\/a\u003e.\u003c\/p\u003e\u003ch2\u003eAndarine in the UK: buying, legal status and what to check\u003c\/h2\u003e\u003cp\u003eBehind searches such as \"andarine UK\", \"S4 SARM UK\" and \"S4 SARM for sale\" sit two questions: can andarine lawfully be bought here, and what makes a listing checkable rather than something taken on trust.\u003c\/p\u003e\u003ch3\u003eThe legal position\u003c\/h3\u003e\u003cp\u003eAndarine is not a licensed medicine in the UK: it has no MHRA marketing authorisation, is not an authorised food supplement, and cannot lawfully be sold for human consumption. Nor is it a controlled drug under the Misuse of Drugs Act 1971. Free Muscle supplies it to adults aged 18 or over for laboratory research only. It is prohibited at all times under section S1 (anabolic agents) of the WADA Prohibited List. Buyers are responsible for the rules that apply to them, including any anti-doping code and, for orders sent to the EU, their own country's import rules. Background on the class is in \u003ca href=\"\/en-ro\/blogs\/news\/what-are-sarms-the-2026-research-guide\"\u003eWhat are SARMs? The 2026 research guide\u003c\/a\u003e.\u003c\/p\u003e\u003ch3\u003eWhat a checkable listing shows, and how this one measures up\u003c\/h3\u003e\u003ctable\u003e\n\u003cthead\u003e\u003ctr\u003e\n\u003cth\u003eCheck\u003c\/th\u003e\n\u003cth\u003eThis listing\u003c\/th\u003e\n\u003c\/tr\u003e\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003eStrength, count and pack total that agree\u003c\/td\u003e\n\u003ctd\u003e15 mg per capsule, 60 capsules, 900 mg per pack\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eManufacturer and seller identified\u003c\/td\u003e\n\u003ctd\u003eMade by iMuscle; sold by FreeMuscle, a business registered in Andorra, and dispatched from Scunthorpe\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eCertificate tied to a lot number\u003c\/td\u003e\n\u003ctd\u003eThe manufacturer's COA, where iMuscle supplies one for the batch held (see the certificate section)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eTerms of sale\u003c\/td\u003e\n\u003ctd\u003eLaboratory research only, adults aged 18 or over, no instructions for use, no before-and-after images or claims about results\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eDelivery\u003c\/td\u003e\n\u003ctd\u003eFree tracked UK delivery in plain packaging; same-working-day processing for orders before 2pm Monday to Friday; EU delivery in 3-7 working days\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eReturns\u003c\/td\u003e\n\u003ctd\u003eUnopened items within 30 days; see \u003ca href=\"\/en-ro\/pages\/shipping\"\u003edelivery\u003c\/a\u003e and \u003ca href=\"\/en-ro\/pages\/guarantee\"\u003eguarantee\u003c\/a\u003e\n\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\u003cp\u003eA listing without an amount per capsule fails the first check: it can be neither priced per milligram nor compared with an assay.\u003c\/p\u003e\u003cp\u003eThis matters for andarine in particular. In 2009 anti-doping researchers at the German Sport University Cologne found andarine in oily liquids sold online as green tea extract and face moisturiser, and described the case as the first proof that SARMs were being sold and misused without any clinical approval (Thevis et al., 2009). Only analysis revealed what those bottles held; reviews and Reddit threads about \"S4\" record experiences, not contents. More checks are in \u003ca href=\"\/en-ro\/blogs\/news\/how-to-choose-a-sarms-supplier-uk-checklist\"\u003ehow to choose a SARMs supplier in the UK\u003c\/a\u003e.\u003c\/p\u003e\u003ch2\u003eCapsules compared with other forms\u003c\/h2\u003e\u003cp\u003eThree formats are sold under the andarine name: capsules, liquids and loose powder. Chemically they are identical; they differ in where the quantity per unit gets fixed and in how anyone can verify it. We know of no published comparison of andarine formats.\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eCapsules (this product).\u003c\/strong\u003e Powder is blended and filled into shells at manufacture, so the 15 mg per capsule is set before the pot is sealed and a certificate can measure it directly. The limit is uniformity: an assay of pooled capsules reports their average, and variation between capsules shows only if units are tested one by one.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eLiquids.\u003c\/strong\u003e Labelled by concentration, so any portion is only as accurate as the volume measured. Solvent evaporating from a bottle opened repeatedly concentrates what remains, and a dissolved compound can come out of solution in the cold, so a certificate describes the liquid only as it was when sampled.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eLoose powder.\u003c\/strong\u003e Sold by weight, which places accuracy entirely on the balance and handling of the laboratory using it.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eInjection.\u003c\/strong\u003e Sometimes asked about by analogy with peptides. Andarine is a small synthetic molecule, not a peptide, so the objection raised against swallowed peptides, breakdown by digestive enzymes, does not apply in the same way (see \u003ca href=\"\/en-ro\/blogs\/news\/do-oral-peptides-work\"\u003edo oral peptides work\u003c\/a\u003e). No published human study has given andarine by injection or any other route.\u003c\/li\u003e\n\u003c\/ul\u003e\u003cp\u003eOn stability, dry powder sealed in a capsule is kept away from the solvents and water in which chemical breakdown usually proceeds fastest. That is a general principle, not a measured result: we know of no published shelf-life data for andarine in any format.\u003c\/p\u003e\u003ch2\u003eAndarine compared with ostarine\u003c\/h2\u003e\u003cp\u003e\"Andarine vs ostarine\" is the comparison searched most often for this compound, and the two are close relatives: aryl-propionamide SARMs from the same GTx programme, built on the same (2S)-2-hydroxy-2-methylpropanamide backbone with a trifluoromethyl group on the anilide ring. They differ in two substituents, and in how far each went in development.\u003c\/p\u003e\u003ctable\u003e\n\u003cthead\u003e\u003ctr\u003e\n\u003cth\u003eFeature\u003c\/th\u003e\n\u003cth\u003eAndarine (this product)\u003c\/th\u003e\n\u003cth\u003eOstarine\u003c\/th\u003e\n\u003c\/tr\u003e\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003eOther names\u003c\/td\u003e\n\u003ctd\u003eS-4, S4, GTx-007\u003c\/td\u003e\n\u003ctd\u003eMK-2866, enobosarm, GTx-024\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eGroup on the anilide ring\u003c\/td\u003e\n\u003ctd\u003eNitro\u003c\/td\u003e\n\u003ctd\u003eCyano\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eGroup on the phenoxy ring\u003c\/td\u003e\n\u003ctd\u003eAcetamido\u003c\/td\u003e\n\u003ctd\u003eCyano\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eFormula, molecular weight, CAS\u003c\/td\u003e\n\u003ctd\u003eC19H18F3N3O6, 441.4, 401900-40-1\u003c\/td\u003e\n\u003ctd\u003eC19H14F3N3O3, 389.3, 841205-47-8\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003ePublished evidence\u003c\/td\u003e\n\u003ctd\u003eRat studies only\u003c\/td\u003e\n\u003ctd\u003ePhase 2 trials in older adults and in people with cancer; phase 3 trials in cancer-related muscle wasting\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eAdverse findings in people\u003c\/td\u003e\n\u003ctd\u003eNone from controlled studies; visual changes in informal reports\u003c\/td\u003e\n\u003ctd\u003eAdverse events recorded in monitored trials; named in published reports of liver injury outside them\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eLicensed as a medicine\u003c\/td\u003e\n\u003ctd\u003eNowhere\u003c\/td\u003e\n\u003ctd\u003eNowhere\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eWADA\u003c\/td\u003e\n\u003ctd\u003eS1.2, prohibited at all times\u003c\/td\u003e\n\u003ctd\u003eS1.2, prohibited at all times\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\u003cp\u003eThe real difference is depth of evidence. Ostarine's trials enrolled people under medical supervision and published what they measured, adverse events included; that record and its limits are set out in \u003ca href=\"\/en-ro\/blogs\/news\/ostarine-mk-2866-research-guide\"\u003eOstarine (MK-2866): the most-studied SARM, what trials found\u003c\/a\u003e. Andarine has no equivalent, so claims that it is \"stronger\" or \"milder\" than ostarine in people rest on anecdote. Milligrams do not translate either: andarine is the heavier molecule, so equal figures on two labels are not equal amounts of substance, and no study establishes any equivalence between them.\u003c\/p\u003e\u003cp\u003eIn law and in sport there is no difference, and both are sold here for laboratory research only. Ostarine brands, including \u003ca href=\"\/en-ro\/products\/imuscle-ostarine-k2866-60-15mg\"\u003eiMuscle Ostarine\u003c\/a\u003e, are compared in the \u003ca href=\"\/en-ro\/collections\/ostarine\"\u003eOstarine (MK-2866) collection\u003c\/a\u003e.\u003c\/p\u003e\u003ch2\u003eReading the certificate of analysis for this product\u003c\/h2\u003e\u003cp\u003eiMuscle is a third-party brand, so any certificate of analysis (COA) for this pack is the manufacturer's, not ours. Where iMuscle supplies a COA for the batch we hold, we show it; where none exists for the batch in stock, we say so rather than show a generic document. Free Muscle-brand compounds are assayed batch by batch at Janoshik Analytical; that programme does not cover iMuscle. A real andarine batch certificate should answer each point below.\u003c\/p\u003e\u003col\u003e\n\u003cli\u003e\n\u003cstrong\u003eWhich compound.\u003c\/strong\u003e Andarine, S-4 or GTx-007, ideally with CAS 401900-40-1. A document headed only \"SARM\" says nothing about this pot.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eIdentity, and by what method.\u003c\/strong\u003e HPLC matches the sample's retention time to a reference standard; LC-MS adds a molecular mass that should fit C19H18F3N3O6 (441.4 g\/mol). The 2009 Cologne analysis confirmed identity against reference material by both liquid chromatography and high-resolution mass spectrometry (Thevis et al., 2009).\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePurity.\u003c\/strong\u003e Usually an HPLC area percentage: the share of detected material that is andarine. It is the line that would expose a by-product like the one in that 2009 sample, left by poor purification at roughly a tenth of the andarine present. It says nothing about milligrams per capsule.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eContent per capsule.\u003c\/strong\u003e The assayed milligrams in a capsule, the figure that tests the 15 mg claim. If it is missing, so is any check on the 900 mg total.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eStereochemistry.\u003c\/strong\u003e Andarine is the (2S) form. Its (2R) mirror image has the same formula and mass and is not separated by standard HPLC; only a chiral method tells them apart. A certificate silent on this has not tested for it.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eLot number, test date and laboratory.\u003c\/strong\u003e The lot on the report has to be the lot on your pot; the test date tells you how old the result is; and the issuing laboratory, if named, can be asked whether the report is genuine.\u003c\/li\u003e\n\u003c\/ol\u003e\u003cp\u003eAny blank line means the matching label figure is still unverified; \u003ca href=\"\/en-ro\/pages\/contact\"\u003econtact us\u003c\/a\u003e and we will tell you what documentation exists for the stock we hold. See also \u003ca href=\"\/en-ro\/blogs\/news\/how-to-read-a-certificate-of-analysis\"\u003ehow to read a COA\u003c\/a\u003e and our \u003ca href=\"\/en-ro\/pages\/lab-tests\"\u003elab tests\u003c\/a\u003e page.\u003c\/p\u003e\u003ch2\u003eDetection, sport and testing\u003c\/h2\u003e\u003cp\u003eAndarine is named in section S1.2 (other anabolic agents) of the WADA Prohibited List and is banned in and out of competition; WADA has prohibited SARMs as a class since 2008 (Thevis et al., 2010). Anti-doping rules apply strict liability: an athlete is responsible for any prohibited substance in their sample, whatever its source, a mislabelled product included.\u003c\/p\u003e\u003cp\u003eTesting does not depend on finding the unchanged molecule. The same Cologne group then characterised andarine's urinary metabolites by liquid chromatography with high-resolution mass spectrometry and confirmed targets for routine doping control: glucuronic acid conjugates of andarine and of its hydroxylated or deacetylated products, a hydrolysis product formed when one of its two aromatic rings is removed, and sulfate conjugates of the hydroxylated and deacetylated metabolites (Thevis et al., 2010).\u003c\/p\u003e\u003cp\u003eWhat the published record does not give is a detection window. We know of no verified study reporting how long andarine or its metabolites remain detectable, so for this product the accurate statement is: detectable, window not established. The absence of a figure is not evidence of a short window. Anyone subject to anti-doping rules should treat any contact with andarine as a risk of an adverse analytical finding.\u003c\/p\u003e\u003ch2\u003eStorage, stability and handling\u003c\/h2\u003e\u003cp\u003eWe know of no published stability study of andarine capsules, so the expiry or best-before date printed by iMuscle is the working limit, and a certificate describes the batch as it was on its test date, not as it is now.\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eContainer.\u003c\/strong\u003e Leave the capsules in the pot they came in and close it after every opening. Separated from that pot and its lot number, capsules can no longer be matched to a certificate.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eConditions.\u003c\/strong\u003e A cool, dry cupboard away from direct light and from radiators, ovens and sunny windowsills. Steam from bathrooms and kitchens softens capsule shells and makes powder clump.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eRecords.\u003c\/strong\u003e Write the opening date next to the lot number. Any portion taken for analysis needs its own label giving compound, lot and date.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eChanges in appearance.\u003c\/strong\u003e Capsules that have discoloured, softened or stuck together are no longer the material a certificate describes; set them aside and \u003ca href=\"\/en-ro\/pages\/contact\"\u003econtact us\u003c\/a\u003e with the lot number.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eHandling and disposal.\u003c\/strong\u003e Wear gloves for opened capsules or powder, work away from food and drink, keep the pot out of reach of children and pets, and dispose of unwanted material as chemical waste under local rules, never in household bins or drains.\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch2\u003eGlossary\u003c\/h2\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eSARM\u003c\/strong\u003e: selective androgen receptor modulator; a non-steroidal ligand of the androgen receptor, pursued in the hope of anabolic action in muscle and bone with less action on the prostate.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eAndrogen receptor\u003c\/strong\u003e: the protein inside cells that testosterone and dihydrotestosterone activate.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eAryl-propionamide\u003c\/strong\u003e: the chemical family of andarine, ostarine and S-23, in which a propanamide chain links two substituted benzene rings.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePreclinical\u003c\/strong\u003e: research in cells or animals, before or instead of trials in people.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eOvariectomised rat\u003c\/strong\u003e: a female rat with the ovaries removed, a standard model of bone loss after oestrogen deficiency.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eBone mineral density\u003c\/strong\u003e: mineral content of bone per unit of area or volume, measured in the 2007 study by dual-energy X-ray absorptiometry.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eEnantiomers\u003c\/strong\u003e: two mirror-image forms of a molecule with a stereocentre, such as (2S)- and (2R)-andarine.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eHPLC\u003c\/strong\u003e: high-performance liquid chromatography, which separates a sample's components for identification and measurement against a standard.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eLC-MS\u003c\/strong\u003e: liquid chromatography coupled to mass spectrometry, adding each component's mass for a stronger identity check.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMetabolite\u003c\/strong\u003e: a breakdown or conversion product formed in the body; some persist longer than the parent molecule, which is why testers look for them.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eGlucuronide\u003c\/strong\u003e: a metabolite formed when the body attaches glucuronic acid to a molecule, easing its excretion in urine.\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch2\u003eAbout iMuscle Andarine S4\u003c\/h2\u003e\u003cp\u003eThe pot behind this listing is iMuscle's ANDARINE S4: a black screw-top container with an orange wrap-around label and the iMUSCLE logo on a black panel near the cap. A black box at the foot of the label gives 60 capsules at 15 mg each, and the side panel repeats 15 mg per capsule beside the systematic chemical name and a line in which iMuscle states a tested purity above 97%. The brand's Romanian shop lists the product as \"60\/15mg\", its shorthand for capsules per pot over milligrams per capsule, which matches our listing.\u003c\/p\u003e\u003cp\u003eAndarine is one of nine single-compound pots that iMuscle groups as its standard line, and all nine are on our \u003ca href=\"\/en-ro\/collections\/brand-imuscle\"\u003eiMuscle brand page\u003c\/a\u003e. The same pot features in two iMuscle stacks we list, \u003ca href=\"\/en-ro\/products\/imuscle-cardarine-ibutamoren-andarine\"\u003eCardarine, Ibutamoren and Andarine\u003c\/a\u003e and \u003ca href=\"\/en-ro\/products\/imuscle-ostarine-andarine-cardarine\"\u003eOstarine, Andarine and Cardarine\u003c\/a\u003e. As of October 2026 iMuscle is the only andarine maker we carry; the \u003ca href=\"\/en-ro\/collections\/andarine\"\u003eandarine collection\u003c\/a\u003e would show any other brand added later.\u003c\/p\u003e\u003cp\u003eFor context, S-4 comes from the aryl-propionamide group of non-steroidal androgen receptor ligands, and its published record is animal work, with no controlled human trial in print. It holds no UK licence as a medicine, is not a controlled drug, and falls under S1 of the WADA Prohibited List.\u003c\/p\u003e\u003cp\u003eTwo documents appear in the photo gallery. One is a Bulgarian-language test protocol, number RN18684, issued in 2021 by a laboratory in Sofia; it gives iMuscle LTD. as the manufacturer, records an HPLC assay of a single sample, and carries no lot number. The other is an English HPLC print-out for S4 carrying lot 20210910, also from 2021. iMuscle says it sends every lot to an independent European laboratory, yet we have seen no report for the stock now held. Read the lot code on your pot and, if it differs, \u003ca href=\"\/en-ro\/pages\/contact\"\u003eask us\u003c\/a\u003e for whatever the manufacturer supplies for that lot. Janoshik testing covers Free Muscle-brand products only.\u003c\/p\u003e\u003ch2\u003eRelated\u003c\/h2\u003e\u003cul\u003e\n\u003cli\u003e\n\u003ca href=\"\/en-ro\/collections\/andarine\"\u003eAll brands of Andarine (S-4)\u003c\/a\u003e, compared on strength, pack size and batch testing\u003c\/li\u003e\n\u003cli\u003e\n\u003ca href=\"\/en-ro\/collections\/brand-imuscle\"\u003eAll iMuscle products\u003c\/a\u003e stocked at Free Muscle\u003c\/li\u003e\n\u003cli\u003e\n\u003ca href=\"\/en-ro\/collections\/ostarine\"\u003eOstarine (MK-2866)\u003c\/a\u003e, \u003ca href=\"\/en-ro\/collections\/s-23\"\u003eS-23\u003c\/a\u003e and \u003ca href=\"\/en-ro\/collections\/sarms\"\u003eall SARMs\u003c\/a\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003ca href=\"\/en-ro\/pages\/shipping\"\u003eDelivery\u003c\/a\u003e and \u003ca href=\"\/en-ro\/pages\/guarantee\"\u003ereturns\u003c\/a\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\u003cp\u003e\u003cem\u003eResearch compounds sold by Free Muscle are supplied for laboratory research use only and are not for human consumption. They are not authorised as medicines by the MHRA, EMA or FDA, are not food supplements, and are sold only to adults aged 18 or over. Nothing on this page is medical or dosing advice.\u003c\/em\u003e\u003c\/p\u003e\u003ch2\u003eReferences\u003c\/h2\u003e\u003col\u003e\n\u003cli\u003eKearbey JD, et al. Selective Androgen Receptor Modulator (SARM) treatment prevents bone loss and reduces body fat in ovariectomized rats. Pharm Res. 2007;24(2):328-35. \u003ca href=\"https:\/\/pubmed.ncbi.nlm.nih.gov\/17063395\/\" rel=\"noopener\"\u003ePMID: 17063395\u003c\/a\u003e.\u003c\/li\u003e\n\u003cli\u003eThevis M, et al. Detection of the arylpropionamide-derived selective androgen receptor modulator (SARM) S-4 (Andarine) in a black-market product. Drug Test Anal. 2009;1(8):387-92. \u003ca href=\"https:\/\/pubmed.ncbi.nlm.nih.gov\/20355219\/\" rel=\"noopener\"\u003ePMID: 20355219\u003c\/a\u003e.\u003c\/li\u003e\n\u003cli\u003eThevis M, et al. Mass spectrometric characterization of urinary metabolites of the selective androgen receptor modulator andarine (S-4) for routine doping control purposes. Rapid Commun Mass Spectrom. 2010;24(15):2245-54. \u003ca href=\"https:\/\/pubmed.ncbi.nlm.nih.gov\/20623476\/\" rel=\"noopener\"\u003ePMID: 20623476\u003c\/a\u003e.\u003c\/li\u003e\n\u003c\/ol\u003e","brand":"iMuscle","offers":[{"title":"Default Title","offer_id":48468978893026,"sku":null,"price":30.99,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0772\/3499\/5426\/files\/ANDARINES4_720x_7a53b342-6ae9-441a-853c-b0481db9dbc3.jpg?v=1789931395"},{"product_id":"imuscle-cardarine-gw501516-60-10mg","title":"iMuscle Cardarine GW-501516 — 60 caps, 10mg","description":"\u003cp\u003e\u003cstrong\u003eiMuscle Cardarine GW-501516, 60 caps, 10mg\u003c\/strong\u003e is an iMuscle listing of Cardarine, labelled at 10 mg per capsule, 60 capsules per pack, 600 mg in total. It is supplied through the Muscle Market range for laboratory research only, is not for human consumption, and is sold to adults aged 18 and over. Below: what the published research reports, including why development was abandoned, the UK legal position, and how batch certificates are handled for iMuscle products.\u003c\/p\u003e\n\u003ch2\u003eAbout Cardarine\u003c\/h2\u003e\n\u003cp\u003eGW-501516 is the development code; Cardarine, GW501516, GW1516 and endurobol are the other names under which the same molecule is sold. Pharmacologically it is a synthetic PPAR-delta agonist. PPAR-delta is a nuclear receptor, and in skeletal muscle it controls genes that govern how fatty acids are oxidised for energy. GlaxoSmithKline and Ligand took the compound forward as a possible treatment for lipid disorders. Sellers often place it next to SARMs, but it never touches the androgen receptor, and despite occasional searches for \"cardarine peptide\" it is a small molecule of about 454 g\/mol rather than an amino acid chain.\u003c\/p\u003e\n\u003ch3\u003eWhat the published research reports\u003c\/h3\u003e\n\u003cp\u003eIn a 2008 study in mice, GW-501516 combined with treadmill training increased oxidative muscle fibres and running endurance more than training alone, and the authors described PPAR-delta and AMPK agonists as exercise mimetics; in the same paper it was AICAR, a different compound, that raised endurance in untrained mice (Narkar et al., 2008). A GlaxoSmithKline trial published in 2012, in 268 people with low HDL cholesterol, reported that over twelve weeks HDL rose while LDL cholesterol and triglycerides fell from baseline; the trial was short and not designed to assess long-term safety (Olson et al., 2012). Anti-doping researchers later summarised the clinical programme as having reached phase II trials in dyslipidaemia and metabolic syndrome (Thevis et al., 2010).\u003c\/p\u003e\n\u003cp\u003eDevelopment was abandoned in 2007 after two-year carcinogenicity studies in rats and mice found tumours in multiple organs. Those toxicology results were presented at a conference and are not indexed on PubMed, so they are not cited here, but they are the most important fact about this compound. No later human trial has been completed and Cardarine has never been approved as a medicine anywhere. Nothing above is a claim about this product.\u003c\/p\u003e\n\u003ch3\u003eChemical identity\u003c\/h3\u003e\n\u003cp\u003eThese PubChem identifiers describe the molecule a batch certificate for this pack should name.\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eSystematic name\u003c\/strong\u003e: 2-[2-methyl-4-[[4-methyl-2-[4-(trifluoromethyl)phenyl]-1,3-thiazol-5-yl]methylsulfanyl]phenoxy]acetic acid\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCAS number\u003c\/strong\u003e: 317318-70-0\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFormula and molecular weight\u003c\/strong\u003e: C21H18F3NO3S2, 453.5 g\/mol\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eInChIKey\u003c\/strong\u003e: YDBLKRPLXZNVNB-UHFFFAOYSA-N\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePubChem CID\u003c\/strong\u003e: 9803963\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2\u003eThis listing\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003eManufacturer: iMuscle\u003c\/li\u003e\n\u003cli\u003eCompound: Cardarine (GW-501516)\u003c\/li\u003e\n\u003cli\u003eForm: Capsules\u003c\/li\u003e\n\u003cli\u003ePack size: 60 capsules\u003c\/li\u003e\n\u003cli\u003eStrength: 10 mg per capsule, as stated by the manufacturer\u003c\/li\u003e\n\u003cli\u003eTotal in pack: 600 mg (10 mg x 60 capsules)\u003c\/li\u003e\n\u003cli\u003eBatch certificate of analysis: shown where iMuscle supplies one for the batch we hold\u003c\/li\u003e\n\u003cli\u003eIntended use: laboratory research only, not for human consumption, adults aged 18 and over\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eThe 10 mg figure is iMuscle's label claim. Only an assay of the batch confirms it. To compare this pack with other Cardarine listings, work from the total milligrams per pack and the cost per milligram, as set out in \u003ca href=\"\/en-ro\/blogs\/news\/price-per-mg-compare-sarms-peptides\"\u003eprice per milligram\u003c\/a\u003e, and then check what certificate each seller holds.\u003c\/p\u003e\n\u003ch2\u003eCardarine in the UK: buying, legal status and what to check\u003c\/h2\u003e\n\u003cp\u003eSearches such as \"cardarine UK\", \"cardarine UK legal\", \"cardarine UK buy\" and \"cardarine for sale\" come down to two questions: may Cardarine be bought here at all, and how can a buyer tell a listing that can be checked from one that asks to be trusted.\u003c\/p\u003e\n\u003ch3\u003eThe legal position\u003c\/h3\u003e\n\u003cp\u003eCardarine is not a licensed medicine in the UK, has not been assessed by the MHRA, and is not an authorised food supplement, so it cannot lawfully be sold for people to swallow. It is not a controlled drug under the Misuse of Drugs Act 1971. Free Muscle sells it to adults aged 18 and over for laboratory research only, and gives no instructions for use. GW-501516 is named on the WADA Prohibited List under section S4 (hormone and metabolic modulators) as a PPAR-delta agonist and is prohibited at all times in sport. WADA issued a specific warning about it in 2013. Buyers are responsible for the rules that apply to them, including import rules for EU orders. Our \u003ca href=\"\/en-ro\/blogs\/news\/what-are-sarms-the-2026-research-guide\"\u003eresearch guide\u003c\/a\u003e covers the wider legal picture for compounds sold alongside SARMs.\u003c\/p\u003e\n\u003ch3\u003eWhat a checkable UK listing shows\u003c\/h3\u003e\n\u003cp\u003eMany sites file Cardarine under SARMs, but the category label proves nothing. What counts is a short list of verifiable facts, set against this listing below.\u003c\/p\u003e\n\u003ctable\u003e\n\u003cthead\u003e\u003ctr\u003e\n\u003cth\u003eWhat to look for\u003c\/th\u003e\n\u003cth\u003eThis listing\u003c\/th\u003e\n\u003c\/tr\u003e\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003eA stated strength, a unit count and a pack total that agree\u003c\/td\u003e\n\u003ctd\u003e10 mg per capsule, 60 capsules, 600 mg per pack\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eA named manufacturer and a named seller\u003c\/td\u003e\n\u003ctd\u003eMade by iMuscle; sold by FreeMuscle, a business registered in Andorra, and dispatched from Scunthorpe\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eA certificate tied to the batch number on the pot\u003c\/td\u003e\n\u003ctd\u003eThe manufacturer's certificate, where iMuscle supplies one for the batch we hold\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eResearch-only terms with no usage directions\u003c\/td\u003e\n\u003ctd\u003eResearch use only, 18+, no amounts, schedules or result claims\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eTracked delivery and discreet packaging\u003c\/td\u003e\n\u003ctd\u003eFree tracked UK delivery in plain packaging; orders placed before 2pm Monday to Friday processed the same working day; EU delivery in 3-7 working days\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eA returns policy\u003c\/td\u003e\n\u003ctd\u003e30-day returns on unopened items, see \u003ca href=\"\/en-ro\/pages\/shipping\"\u003edelivery\u003c\/a\u003e and \u003ca href=\"\/en-ro\/pages\/guarantee\"\u003eguarantee\u003c\/a\u003e\n\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003cp\u003eA listing that promises results, quotes user reviews as evidence or shows before-and-after pictures is advertising a use, which a research supplier cannot lawfully do. The fuller supplier checklist is in \u003ca href=\"\/en-ro\/blogs\/news\/how-to-choose-a-sarms-supplier-uk-checklist\"\u003ehow to choose a SARMs supplier in the UK\u003c\/a\u003e.\u003c\/p\u003e\n\u003ch2\u003eCapsules compared with other forms\u003c\/h2\u003e\n\u003cp\u003eCardarine appears in three physical forms: filled capsules like this pack, liquids sold by concentration, and loose powder sold by weight. The molecule is the same; what differs is where the quantity per unit is fixed and how easily it can be verified. No published study compares these formats for GW-501516.\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eCapsules.\u003c\/strong\u003e The 10 mg per capsule is fixed when powder is blended and filled at manufacture, so an assay can measure it directly and the figure cannot drift once the pot is sealed. The weak point is uniformity between individual capsules, which a pooled assay averages out.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eLiquids.\u003c\/strong\u003e Accuracy depends on the concentration being correct and on how precisely a volume is measured. Carrier solvents can evaporate from a bottle that is opened repeatedly, raising the concentration of what is left, and cold storage can cause the compound to crystallise out.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePowder.\u003c\/strong\u003e Accuracy rests entirely on the balance and technique of the laboratory weighing it.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eBecause Cardarine is a small molecule and not a peptide, the argument that digestive enzymes break down peptides taken by mouth does not apply to it in the same way (see \u003ca href=\"\/en-ro\/blogs\/news\/do-oral-peptides-work\"\u003edo oral peptides work\u003c\/a\u003e). On stability, a dry powder sealed in a capsule is kept away from water and solvents, where chemical breakdown generally proceeds fastest, but we know of no published shelf-life study for any Cardarine format.\u003c\/p\u003e\n\u003ch2\u003eCardarine compared with SR9009\u003c\/h2\u003e\n\u003cp\u003e\"Stenabolic vs cardarine\" is the comparison searched most often for this compound, largely because both are sold under metabolic or endurance headings. Pharmacologically they have little in common beyond being synthetic ligands of nuclear receptors.\u003c\/p\u003e\n\u003ctable\u003e\n\u003cthead\u003e\u003ctr\u003e\n\u003cth\u003eFeature\u003c\/th\u003e\n\u003cth\u003eCardarine (this product)\u003c\/th\u003e\n\u003cth\u003eSR9009 (stenabolic)\u003c\/th\u003e\n\u003c\/tr\u003e\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003eTarget\u003c\/td\u003e\n\u003ctd\u003ePPAR-delta, a fatty acid sensing receptor\u003c\/td\u003e\n\u003ctd\u003eREV-ERB alpha and beta, repressors in the body clock machinery\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOrigin\u003c\/td\u003e\n\u003ctd\u003eGlaxoSmithKline and Ligand, lipid disorders programme\u003c\/td\u003e\n\u003ctd\u003eAcademic laboratory at the Scripps Research Institute\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eFormula and CAS\u003c\/td\u003e\n\u003ctd\u003eC21H18F3NO3S2, 317318-70-0\u003c\/td\u003e\n\u003ctd\u003eC20H24ClN3O4S, 1379686-30-2\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eHuman data\u003c\/td\u003e\n\u003ctd\u003eShort phase II lipid trials\u003c\/td\u003e\n\u003ctd\u003eNo published human trial\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eKey limiting finding\u003c\/td\u003e\n\u003ctd\u003eTumours in two-year rodent studies; development stopped in 2007\u003c\/td\u003e\n\u003ctd\u003eEvidence confined to cells and animals\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eLicensed as a medicine\u003c\/td\u003e\n\u003ctd\u003eNowhere\u003c\/td\u003e\n\u003ctd\u003eNowhere\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eWADA\u003c\/td\u003e\n\u003ctd\u003eS4, metabolic modulator, prohibited at all times\u003c\/td\u003e\n\u003ctd\u003eS4, metabolic modulator, prohibited at all times\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003cp\u003eSR9009 was first described in 2012, when a Scripps group reported that synthetic REV-ERB agonists altered circadian behaviour and the daily pattern of clock and metabolic gene expression in mice, raised energy expenditure, and reduced fat mass in diet-induced obese mice (Solt et al., 2012). That is a mouse study; no human trial of SR9009 has been published, so its record is shorter than Cardarine's but also lacks Cardarine's two-year toxicology data, which is absence of information rather than reassurance. Cardarine, by contrast, has human lipid data and a carcinogenicity finding that ended its development.\u003c\/p\u003e\n\u003cp\u003eNeither compound is interchangeable with the other, neither is licensed, and both are sold here for laboratory research only. SR9009 listings, including \u003ca href=\"\/en-ro\/products\/imuscle-stenabolic-sr-9009-60-10mg\"\u003eiMuscle Stenabolic SR-9009\u003c\/a\u003e, are compared in the \u003ca href=\"\/en-ro\/collections\/sr9009\"\u003eSR9009 (Stenabolic) collection\u003c\/a\u003e, and the background is in \u003ca href=\"\/en-ro\/blogs\/news\/sr9009-stenabolic-research-guide\"\u003eSR9009 (Stenabolic): the research guide\u003c\/a\u003e.\u003c\/p\u003e\n\u003ch2\u003eReading the certificate of analysis for this product\u003c\/h2\u003e\n\u003cp\u003eThe Janoshik Analytical programme that assays every Free Muscle-brand batch, with certificates emailed on request, does not extend to this pack, because iMuscle manufactures it. Any certificate here is iMuscle's own, and we display one only when iMuscle has supplied it for the exact batch on our shelves. We will not pass off an undated or batch-free PDF as a certificate. \u003ca href=\"\/en-ro\/pages\/contact\"\u003eContact us\u003c\/a\u003e with the product name and we will either send the document for current stock or tell you that none exists. Where one is available, these are the lines worth reading.\u003c\/p\u003e\n\u003col\u003e\n\u003cli\u003e\n\u003cstrong\u003eWhat was tested.\u003c\/strong\u003e Look for GW-501516 or Cardarine by name, and preferably CAS 317318-70-0. A heading such as \"PPAR agonist\" or \"SARM\" could describe dozens of substances.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eHow identity was shown.\u003c\/strong\u003e A matching retention time on HPLC against a reference standard is the basic check. Where LC-MS was run, the measured mass ought to fit C21H18F3NO3S2 at 453.5 g\/mol, which is harder to fake or misread.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePurity figure.\u003c\/strong\u003e Normally a percentage of total peak area on the chromatogram. A high number means few contaminants were seen; it does not reveal the milligram content of a capsule.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMeasured milligrams.\u003c\/strong\u003e An assay result in mg per capsule is what tests iMuscle's 10 mg claim. Without it, the 600 mg pack total rests on the label alone.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eLot and date.\u003c\/strong\u003e Compare the lot on the report with the lot on the pot; a mismatch means the report describes other stock. The date tells you how long ago the sample was analysed.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eIssuing laboratory.\u003c\/strong\u003e A named laboratory can be asked to confirm that the report is genuine.\u003c\/li\u003e\n\u003c\/ol\u003e\n\u003cp\u003eA missing field is information in itself: whatever the certificate does not measure remains a label claim. Our \u003ca href=\"\/en-ro\/pages\/lab-tests\"\u003elab tests page\u003c\/a\u003e and \u003ca href=\"\/en-ro\/blogs\/news\/how-to-read-a-certificate-of-analysis\"\u003ehow to read a certificate of analysis\u003c\/a\u003e explain the documents in more detail.\u003c\/p\u003e\n\u003ch2\u003eDetection, sport and testing\u003c\/h2\u003e\n\u003cp\u003eGW-501516 has been on the WADA Prohibited List since January 2009, when it was first classed as a gene doping agent; it now sits in section S4 among the metabolic modulators and is prohibited in and out of competition (Thevis et al., 2010). Anti-doping rules apply strict liability, so an athlete is responsible for any prohibited substance in a sample regardless of how it got there, including through a mislabelled product.\u003c\/p\u003e\n\u003cp\u003eTesting does not rely on finding the unchanged compound. The Cologne anti-doping laboratory synthesised the two main urinary metabolites, a sulfoxide and a sulfone formed by oxidation of the sulphur atom, confirmed their structures by high-resolution mass spectrometry and NMR, and validated a routine screening method with a reported limit of detection of 0.1 ng\/ml in urine (Thevis et al., 2010). Numerous sanctions have followed.\u003c\/p\u003e\n\u003cp\u003eWe know of no verified published figure for how long Cardarine or its metabolites remain detectable after exposure, so the accurate statement for this product is: detectable, window not established. The lack of a published window is not evidence that the window is short.\u003c\/p\u003e\n\u003ch2\u003eStorage, stability and handling\u003c\/h2\u003e\n\u003cp\u003eNo published stability study covers Cardarine capsules, so the expiry or best-before date printed by iMuscle is the working limit, and any certificate describes the batch on its test date rather than today.\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eKeep the original pot.\u003c\/strong\u003e The lot number on the label is what links the capsules to a certificate; capsules moved to another container lose that link.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCool, dry and dark.\u003c\/strong\u003e Store below room temperature where possible, away from radiators and sunny windowsills, and away from bathroom or kitchen humidity, which softens gelatine shells.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eKeep a record.\u003c\/strong\u003e Write down when the seal was broken, and give any aliquot sent for analysis its own label carrying the lot number.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCheck condition.\u003c\/strong\u003e If shells have cracked, turned sticky or changed colour, the contents may have changed too; quarantine them and send us the lot number.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eLaboratory practice.\u003c\/strong\u003e Gloves for any opened capsule, a work area separate from food and drink, storage beyond the reach of children and pets, and disposal through the chemical waste route your local rules set out.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2\u003eGlossary\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003ePPAR-delta\u003c\/strong\u003e: one of three peroxisome proliferator-activated receptors (alpha, gamma and delta); the delta form is widespread in muscle and is the receptor Cardarine binds.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eREV-ERB\u003c\/strong\u003e: a pair of nuclear receptors in the circadian clock machinery; the target of SR9009.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eExercise mimetic\u003c\/strong\u003e: the description Narkar and colleagues applied in 2008, based on changes in mouse muscle, not on any human finding.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eHDL cholesterol\u003c\/strong\u003e: high-density lipoprotein cholesterol, one of the blood lipid measures reported in the human trials.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCarcinogenicity study\u003c\/strong\u003e: a long-term animal study, usually two years in rodents, designed to detect tumour formation.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePhase II trial\u003c\/strong\u003e: an early human study testing effects on a disease marker in a limited number of participants.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eHPLC\u003c\/strong\u003e: a technique that pumps a dissolved sample through a packed column so its components emerge at different times and can be measured.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eLC-MS\u003c\/strong\u003e: liquid chromatography coupled to mass spectrometry, which adds a molecular mass to the identity check.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSulfoxide and sulfone\u003c\/strong\u003e: the oxidised forms of GW-501516 found in urine, which anti-doping laboratories screen for.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eLimit of detection\u003c\/strong\u003e: the lowest concentration an analytical method can reliably distinguish from zero.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2\u003eAbout iMuscle Cardarine GW-501516\u003c\/h2\u003e\u003cp\u003eiMuscle prints this pot as CARDARINE on a green label, with GW, 501516 and Endurobol, a marketing name for the compound, in a small line beneath. The iMUSCLE mark sits on black at the top of the label, and a box near the base gives 60 capsules at 10 mg each. A side panel shows 10 mg per capsule, a chemical name and iMuscle's statement that purity tested above 97%. On the brand's Romanian website the same pot appears as Cardarine GW501516, \"60\/10mg\", the figures we list.\u003c\/p\u003e\u003cp\u003eUnlike the other iMuscle singles we stock, this listing has no test document in its gallery, only the pot and its side panel. The 10 mg per capsule, 600 mg per pot, therefore rests on the label until a document for the lot held is produced. iMuscle's quality page says each new batch of raw material goes for testing against a 97% minimum purity; that is the brand's own account, not a result we have seen for this lot. Quote the lot code on the pot when you \u003ca href=\"\/en-ro\/pages\/contact\"\u003econtact us\u003c\/a\u003e, and we will say whether iMuscle has supplied anything for it.\u003c\/p\u003e\u003cp\u003eCardarine appears in more iMuscle stacks than any other compound: five of the eight we list include it, from \u003ca href=\"\/en-ro\/products\/imuscle-cardarine-gw501516-ligandrol\"\u003eCardarine and Ligandrol\u003c\/a\u003e to \u003ca href=\"\/en-ro\/products\/imuscle-ostarine-andarine-cardarine\"\u003eOstarine, Andarine and Cardarine\u003c\/a\u003e. Every iMuscle listing is on our \u003ca href=\"\/en-ro\/collections\/brand-imuscle\"\u003eiMuscle page\u003c\/a\u003e.\u003c\/p\u003e\u003cp\u003eGW-501516 is a PPAR-delta agonist rather than a SARM. Its development was stopped after cancers appeared in long-term rodent studies; it has no UK licence and is prohibited by WADA under S4. Among the cardarine brands on our shelves, iMuscle and \u003ca href=\"\/en-ro\/collections\/brand-thoroughbred-labs\"\u003eThoroughbred Labs\u003c\/a\u003e both state 10 mg per capsule in packs of 60, while Free Muscle's own pots come at 5 mg and 10 mg, each batch assayed by Janoshik Analytical. The \u003ca href=\"\/en-ro\/collections\/cardarine\"\u003ecardarine collection\u003c\/a\u003e sets them side by side.\u003c\/p\u003e\u003ch2\u003eRelated\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003ca href=\"\/en-ro\/collections\/cardarine\"\u003eAll brands of Cardarine we stock, compared\u003c\/a\u003e, including \u003ca href=\"\/en-ro\/products\/thoroughbred-labs-gw501516\"\u003eThoroughbred Labs GW-501516\u003c\/a\u003e and our own \u003ca href=\"\/en-ro\/products\/cardarine-gw-501516-10mg-free-muscle-60-capsules\"\u003eFree Muscle Cardarine 10mg\u003c\/a\u003e\n\u003c\/li\u003e\n\u003cli\u003e\u003ca href=\"\/en-ro\/collections\/brand-imuscle\"\u003eAll iMuscle products\u003c\/a\u003e\u003c\/li\u003e\n\u003cli\u003e\u003ca href=\"\/en-ro\/blogs\/news\/cardarine-gw-501516-what-happened-in-development\"\u003eCardarine (GW-501516): why development stopped and what the data show\u003c\/a\u003e\u003c\/li\u003e\n\u003cli\u003e\n\u003ca href=\"\/en-ro\/collections\/sr9009\"\u003eSR9009 (Stenabolic)\u003c\/a\u003e and \u003ca href=\"\/en-ro\/collections\/weight-loss\"\u003emetabolic support\u003c\/a\u003e collections\u003c\/li\u003e\n\u003cli\u003e\u003ca href=\"\/en-ro\/pages\/lab-tests\"\u003eBatch testing and certificates of analysis\u003c\/a\u003e\u003c\/li\u003e\n\u003cli\u003e\n\u003ca href=\"\/en-ro\/pages\/shipping\"\u003eDelivery\u003c\/a\u003e and \u003ca href=\"\/en-ro\/pages\/guarantee\"\u003ereturns\u003c\/a\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cem\u003eResearch compounds sold by Free Muscle are supplied for laboratory research use only and are not for human consumption. They are not authorised as medicines by the MHRA, EMA or FDA, are not food supplements, and are sold only to adults aged 18 or over. Nothing on this page is medical or dosing advice. Summaries of published research describe study findings and are not claims about any product.\u003c\/em\u003e\u003c\/p\u003e\n\u003ch2\u003eReferences\u003c\/h2\u003e\n\u003col\u003e\n\u003cli\u003eNarkar VA, et al. AMPK and PPARdelta agonists are exercise mimetics. Cell. 2008;134(3):405-15. \u003ca href=\"https:\/\/pubmed.ncbi.nlm.nih.gov\/18674809\/\" rel=\"noopener\"\u003ePMID: 18674809\u003c\/a\u003e.\u003c\/li\u003e\n\u003cli\u003eOlson EJ, et al. Lipid effects of peroxisome proliferator-activated receptor-delta agonist GW501516 in subjects with low high-density lipoprotein cholesterol: characteristics of metabolic syndrome. Arterioscler Thromb Vasc Biol. 2012;32(9):2289-94. \u003ca href=\"https:\/\/pubmed.ncbi.nlm.nih.gov\/22814748\/\" rel=\"noopener\"\u003ePMID: 22814748\u003c\/a\u003e.\u003c\/li\u003e\n\u003cli\u003eThevis M, et al. Characterization of two major urinary metabolites of the PPARdelta-agonist GW1516 and implementation of the drug in routine doping controls. Anal Bioanal Chem. 2010;396(7):2479-91. \u003ca href=\"https:\/\/pubmed.ncbi.nlm.nih.gov\/19946680\/\" rel=\"noopener\"\u003ePMID: 19946680\u003c\/a\u003e.\u003c\/li\u003e\n\u003cli\u003eSolt LA, et al. Regulation of circadian behaviour and metabolism by synthetic REV-ERB agonists. Nature. 2012;485(7396):62-8. \u003ca href=\"https:\/\/pubmed.ncbi.nlm.nih.gov\/22460951\/\" rel=\"noopener\"\u003ePMID: 22460951\u003c\/a\u003e.\u003c\/li\u003e\n\u003c\/ol\u003e\n","brand":"iMuscle","offers":[{"title":"Default Title","offer_id":48468978958562,"sku":null,"price":35.99,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0772\/3499\/5426\/files\/CARDARINE2_720x_d6eeb76e-e12e-4d4e-8613-f1d8572b8197.jpg?v=1789931398"},{"product_id":"imuscle-cardarine-gw501516-ligandrol","title":"iMuscle Cardarine GW-501516 + Ligandrol stack","description":"\u003cp\u003e\u003cstrong\u003eiMuscle Cardarine GW-501516 + Ligandrol\u003c\/strong\u003e is a two-compound bundle from iMuscle that pairs Cardarine (GW-501516) with LGD-4033 (Ligandrol). Its photographs show one labelled iMuscle pot of each compound; the strengths printed on those pots are given in the iMuscle section below, and we will not put a figure on the bundle as a whole until we have confirmed what the stock held contains. The bundle simply offers both in one listing; we make no claim that the two do anything together. Supplied for laboratory research only, not for human consumption, to adults aged 18 and over.\u003c\/p\u003e\u003cp\u003eNothing here suggests they be studied or used together.\u003c\/p\u003e\u003ch2\u003eAbout the compounds in this bundle\u003c\/h2\u003e\u003ch3\u003eCardarine (GW-501516)\u003c\/h3\u003e\u003cp\u003eCardarine, also written GW501516 or endurobol, is a synthetic PPAR-delta agonist developed by GlaxoSmithKline and Ligand for lipid disorders; it is not a SARM. A 2012 twelve-week human trial in 268 subjects with low HDL cholesterol recorded a rise in HDL and a fall in triglycerides, but was not designed to assess long-term safety (Olson et al., 2012). Clinical development was halted after two-year rodent carcinogenicity studies found tumours in multiple organs. Every brand we stock is on the \u003ca href=\"\/en-ro\/collections\/cardarine\"\u003eCardarine collection page\u003c\/a\u003e.\u003c\/p\u003e\u003ch3\u003eLGD-4033 (Ligandrol)\u003c\/h3\u003e\u003cp\u003eLGD-4033, also called ligandrol or VK5211, is a non-steroidal selective androgen receptor modulator from Ligand Pharmaceuticals. In a 2013 placebo-controlled study, 76 healthy men aged 21 to 50 took LGD-4033 or placebo for 21 days. Lean body mass rose dose-dependently while fat mass did not change significantly; total testosterone, SHBG, HDL cholesterol and triglycerides fell dose-dependently, and free testosterone and FSH fell at the highest level only. Hormones and lipids returned to baseline after the study ended (Basaria et al., 2013). It was never approved. See the \u003ca href=\"\/en-ro\/collections\/lgd-4033\"\u003eLGD-4033 collection page\u003c\/a\u003e.\u003c\/p\u003e\u003ch3\u003eHow the two compounds differ\u003c\/h3\u003e\u003cp\u003eSharing a bundle does not make the two relatives. They bind different receptors, come from different chemical families and sit in different sections of the anti-doping list.\u003c\/p\u003e\u003ctable\u003e\n\u003cthead\u003e\u003ctr\u003e\n\u003cth\u003eProperty\u003c\/th\u003e\n\u003cth\u003eCardarine\u003c\/th\u003e\n\u003cth\u003eLGD-4033\u003c\/th\u003e\n\u003c\/tr\u003e\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003eClass\u003c\/td\u003e\n\u003ctd\u003ePPAR-delta agonist (not a SARM)\u003c\/td\u003e\n\u003ctd\u003eSelective androgen receptor modulator\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eReceptor\u003c\/td\u003e\n\u003ctd\u003ePPAR-delta, a nuclear receptor governing fatty-acid oxidation genes\u003c\/td\u003e\n\u003ctd\u003eAndrogen receptor, the receptor testosterone activates\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eCAS number\u003c\/td\u003e\n\u003ctd\u003e317318-70-0\u003c\/td\u003e\n\u003ctd\u003e1165910-22-4\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eFormula and molecular weight\u003c\/td\u003e\n\u003ctd\u003eC21H18F3NO3S2, 453.5 g\/mol\u003c\/td\u003e\n\u003ctd\u003eC14H12F6N2O, 338.25 g\/mol\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eStereocentres\u003c\/td\u003e\n\u003ctd\u003eNone\u003c\/td\u003e\n\u003ctd\u003eTwo, marked (2R) and (1R) in the systematic name\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003ePublished human data\u003c\/td\u003e\n\u003ctd\u003eLipid trials in people with low HDL cholesterol\u003c\/td\u003e\n\u003ctd\u003eOne 21-day placebo-controlled study in healthy men\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eWhy development stopped or stalled\u003c\/td\u003e\n\u003ctd\u003eTumours in two-year rodent studies\u003c\/td\u003e\n\u003ctd\u003eNot approved; no long-term human data published\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eWADA section\u003c\/td\u003e\n\u003ctd\u003eS4, hormone and metabolic modulators\u003c\/td\u003e\n\u003ctd\u003eS1, anabolic agents\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\u003cp\u003eNothing summarised above is a claim about this product, and no published study has examined these compounds together.\u003c\/p\u003e\u003ch2\u003eThis listing\u003c\/h2\u003e\u003cul\u003e\n\u003cli\u003eBrand: iMuscle\u003c\/li\u003e\n\u003cli\u003eCompounds: Cardarine (GW-501516) and LGD-4033 (Ligandrol)\u003c\/li\u003e\n\u003cli\u003eForm: capsules\u003c\/li\u003e\n\u003cli\u003ePack: the photographs show two iMuscle pots, each labelled 60 capsules; check with us that the stock held matches\u003c\/li\u003e\n\u003cli\u003eStrength: each pot states its own, 10 mg (cardarine) and 8 mg (ligandrol) per capsule as sold singly; the bundle listing itself states none\u003c\/li\u003e\n\u003cli\u003eBundle basis: two compounds in one listing; no combined effect is claimed\u003c\/li\u003e\n\u003cli\u003eUse: laboratory research only, not for human consumption, adults 18 and over\u003c\/li\u003e\n\u003c\/ul\u003e\u003cp\u003eA total in milligrams for the pair is left blank here until the stock held has been checked. The single-compound iMuscle listings carry a label strength; see \u003ca href=\"\/en-ro\/blogs\/news\/price-per-mg-compare-sarms-peptides\"\u003eprice per milligram\u003c\/a\u003e.\u003c\/p\u003e\u003ch2\u003eCardarine and LGD-4033 in the UK: buying, legal status and what to check\u003c\/h2\u003e\u003cp\u003eTwo questions come up most often about these compounds in Britain: whether they can be bought lawfully, and how one listing can be told apart from another.\u003c\/p\u003e\u003ch3\u003eThe legal position for each compound\u003c\/h3\u003e\u003cp\u003eNeither Cardarine nor LGD-4033 is a licensed medicine in the UK (MHRA) or an authorised food supplement, so neither may be sold for people to take. They are not controlled drugs under the Misuse of Drugs Act 1971 and may be sold to adults for laboratory research, the only basis for this listing. Free Muscle gives no directions for use with either. Both are on the WADA Prohibited List, Cardarine under S4 (hormone and metabolic modulators) and LGD-4033 under S1 (anabolic agents), and are banned in tested sport at all times. Background: \u003ca href=\"\/en-ro\/blogs\/news\/what-are-sarms-the-2026-research-guide\"\u003eWhat are SARMs? The 2026 research guide\u003c\/a\u003e.\u003c\/p\u003e\u003ch3\u003eWhy the label alone settles nothing\u003c\/h3\u003e\u003cp\u003eBoth compounds in this bundle turn up in the best-known analysis of products sold online. In 2016, researchers working with anti-doping laboratory methods bought 44 products marketed as SARMs (Van Wagoner et al., 2017). LGD-4033 was one of the three SARMs they detected, in the 23 products that contained any SARM. GW501516 was among the other unapproved drugs found in 17 further products. Four products held no active compound, eleven held substances not listed, and only 18 of the 44 contained the amount their label stated. For a two-compound bundle, that means two separate claims to confirm, not one.\u003c\/p\u003e\u003ch3\u003eWhat a checkable listing shows, and how this one compares\u003c\/h3\u003e\u003col\u003e\n\u003cli\u003e\n\u003cstrong\u003eA named manufacturer and a named UK seller.\u003c\/strong\u003e Met: iMuscle makes the bundle, and FreeMuscle, a business registered in Andorra, sells it and dispatches it from Scunthorpe.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eA stated strength for each compound.\u003c\/strong\u003e Met by each pot's own label, not by the bundle listing; a combined figure waits on confirmation of the stock held.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eA certificate for each lot held.\u003c\/strong\u003e Shown only where iMuscle supplies one for the batch we hold; see the certificate section below.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eResearch-only terms.\u003c\/strong\u003e Met: no amounts, schedules or outcome claims, adults aged 18 and over.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eTraceable, discreet delivery.\u003c\/strong\u003e Met: every UK order goes free and tracked in plain packaging.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eA way to send it back.\u003c\/strong\u003e Met: any unopened item can come back within 30 days, as set out on the \u003ca href=\"\/en-ro\/pages\/shipping\"\u003edelivery\u003c\/a\u003e and \u003ca href=\"\/en-ro\/pages\/guarantee\"\u003eguarantee\u003c\/a\u003e pages.\u003c\/li\u003e\n\u003c\/ol\u003e\u003cp\u003eStar ratings and forum threads record delivery experiences, not capsule contents. A longer checklist is in \u003ca href=\"\/en-ro\/blogs\/news\/how-to-choose-a-sarms-supplier-uk-checklist\"\u003ehow to choose a SARMs supplier in the UK\u003c\/a\u003e.\u003c\/p\u003e\u003ch2\u003eCapsules compared with other forms\u003c\/h2\u003e\u003cp\u003eBoth compounds are also offered as liquids and loose powders. The molecule does not change with the format; what changes is where the quantity per unit is fixed, and so what a certificate can vouch for.\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eCapsules, as here.\u003c\/strong\u003e Powder is blended and portioned into shells before sealing, so the amount is set once, at manufacture, and an assay can report it directly. The unknown is how evenly the blend was mixed, since a single assay reports an average across the capsules sampled.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eLiquids.\u003c\/strong\u003e Sold by concentration, so every portion depends on measuring a volume accurately. A solution opened often can lose solvent and grow stronger.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePowder.\u003c\/strong\u003e Nothing is portioned in advance, so accuracy depends wholly on the balance and the person weighing.\u003c\/li\u003e\n\u003c\/ul\u003e\u003cp\u003eInjectable versions of either are sometimes listed, but no human study we can cite gave either compound by injection; the 2013 LGD-4033 study describes it as an oral compound in its title. Neither is a peptide. At 453.5 and 338.25 g\/mol they are small synthetic molecules, so the argument that digestive enzymes break down swallowed peptides does not apply to them in the same way (see \u003ca href=\"\/en-ro\/blogs\/news\/do-oral-peptides-work\"\u003edo oral peptides work\u003c\/a\u003e). For this bundle, the capsule format's main strength, a stated figure per capsule that can be checked, is carried by each pot's label, not by the bundle listing.\u003c\/p\u003e\u003ch2\u003eEach compound compared with its most-searched alternative\u003c\/h2\u003e\u003cp\u003eA bundle has no single comparison, so each compound is set against the one it is most often searched with: \"stenabolic vs cardarine\" and \"LGD 4033 vs RAD 140\".\u003c\/p\u003e\u003ch3\u003eCardarine compared with SR9009\u003c\/h3\u003e\u003cp\u003eSR9009, sold as stenabolic, is often treated as a sister compound of Cardarine, but the resemblance is commercial, not chemical. SR9009 (C20H24ClN3O4S, CAS 1379686-30-2) binds REV-ERB alpha and beta, receptors in the circadian clock, whereas Cardarine binds PPAR-delta. SR9009 came from an academic laboratory at the Scripps Research Institute and was first described in 2012 in mouse work; it has never entered a clinical trial, so it has no human lipid data like Cardarine's and no published two-year carcinogenicity studies either. That second gap is missing information, not reassurance. Neither is licensed anywhere; WADA lists both under S4. SR9009 brands are in the \u003ca href=\"\/en-ro\/collections\/sr9009\"\u003eSR9009 collection\u003c\/a\u003e, with background in the \u003ca href=\"\/en-ro\/blogs\/news\/sr9009-stenabolic-research-guide\"\u003eSR9009 research guide\u003c\/a\u003e.\u003c\/p\u003e\u003ch3\u003eLGD-4033 compared with RAD-140\u003c\/h3\u003e\u003cp\u003eRAD-140 (testolone, vosilasarm), from Radius Health, is like LGD-4033 a non-steroidal SARM that activates the androgen receptor and was never approved. Their clinical records point in different directions. LGD-4033 was given to healthy young men for three weeks with body composition and hormones among the outcomes. RAD-140's first-in-human phase 1 study enrolled 22 postmenopausal women with ER-positive, HER2-negative metastatic breast cancer to establish safety and a maximum tolerated level; raised liver enzymes (AST in 59% and ALT in 45%) were the most frequent adverse events (LoRusso et al., 2022). No trial has compared them, so claims that one is stronger rest on anecdote. WADA names both in section S1.2. RAD-140 brands are in the \u003ca href=\"\/en-ro\/collections\/rad-140\"\u003eRAD-140 collection\u003c\/a\u003e, and its trial is covered in \u003ca href=\"\/en-ro\/blogs\/news\/rad-140-testolone-what-the-research-says\"\u003eRAD-140 (testolone): what the research says\u003c\/a\u003e.\u003c\/p\u003e\u003ch2\u003eReading the certificate of analysis for this product\u003c\/h2\u003e\u003cp\u003eiMuscle is a third-party brand, so any certificate of analysis is the manufacturer's. We show one only where iMuscle supplies it for the batch we hold; a bundle may draw on a separate batch per compound, so ask for each by compound name. A generic PDF with no batch number is not a batch certificate. Free Muscle-brand batches are assayed by Janoshik Analytical, an independent laboratory, with the certificate sent on request by email; that programme does not cover iMuscle. See \u003ca href=\"\/en-ro\/pages\/lab-tests\"\u003elab tests\u003c\/a\u003e.\u003c\/p\u003e\u003cp\u003eBecause the bundle holds two compounds, expect two identity results, normally on two certificates. Read each against these points:\u003c\/p\u003e\u003col\u003e\n\u003cli\u003e\n\u003cstrong\u003eName and CAS number.\u003c\/strong\u003e 317318-70-0 for Cardarine and 1165910-22-4 for LGD-4033. A heading of only \"SARM\" does not say which molecule was found.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eIdentity method.\u003c\/strong\u003e HPLC compares the sample's retention time with a reference standard. LC-MS adds a measured mass, which should match the molecular formula: a monoisotopic mass of about 453.07 for Cardarine and 338.09 for LGD-4033, usually seen as an ion about one mass unit above or below. Without an identity result, a purity figure could describe some other substance.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eIsomer, for LGD-4033 only.\u003c\/strong\u003e Its two stereocentres mean other isomers share its formula and mass, so a mass match alone does not prove the right form. Cardarine has no stereocentre, so the point does not arise for it.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePurity percentage.\u003c\/strong\u003e Usually a share of the total HPLC peak area: how much of what was detected is the named compound. It does not give milligrams per capsule.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eContent per capsule.\u003c\/strong\u003e For most listings this tests a label claim. Here there is no label claim, so a measured figure would be the first statement of strength rather than a check on one.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eBatch number, test date and laboratory.\u003c\/strong\u003e The lot must match the container, the date shows the age of the result, and a named laboratory can be asked to confirm the report.\u003c\/li\u003e\n\u003c\/ol\u003e\u003cp\u003eA missing field leaves its question open. \u003ca href=\"\/en-ro\/pages\/contact\"\u003eContact us\u003c\/a\u003e with the lot numbers and we will tell you what documentation exists. See also \u003ca href=\"\/en-ro\/blogs\/news\/how-to-read-a-certificate-of-analysis\"\u003ehow to read a certificate of analysis\u003c\/a\u003e.\u003c\/p\u003e\u003ch2\u003eDetection, sport and testing\u003c\/h2\u003e\u003cp\u003eBoth compounds are banned in and out of competition. GW-501516 has been on the WADA list since January 2009, first categorised as a gene doping substance and now in section S4 (Thevis et al., 2010). LGD-4033 is named in section S1.2 among other anabolic agents. Anti-doping rules apply strict liability, so an athlete answers for any prohibited substance in a sample however it got there, and the 2017 analysis shows that a product's label is no guide to what it holds.\u003c\/p\u003e\u003cp\u003eTesting for Cardarine targets what the body makes of it as well as the parent molecule. The Cologne anti-doping laboratory synthesised the two main urinary metabolites, a sulfoxide and a sulfone formed at the sulphur atom, confirmed their structures and validated a routine urine screening method with a limit of detection of 0.1 ng\/ml (Thevis et al., 2010).\u003c\/p\u003e\u003cp\u003eNo verified study we can cite gives a detection window after capsules such as these, whose strength is not even stated. For both compounds the accurate statement is: detectable, window not established. The absence of a published window is not evidence that it is short.\u003c\/p\u003e\u003ch2\u003eStorage, stability and handling\u003c\/h2\u003e\u003cp\u003eWe know of no published shelf-life study for Cardarine or LGD-4033 capsules, so we quote no shelf life. The expiry date printed by iMuscle is the working limit, and a certificate describes a batch only on its test date.\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eOne compound, one container.\u003c\/strong\u003e Keep each compound in its original labelled container. Capsules can look alike, and once mixed or decanted they can no longer be traced to a lot number or certificate.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCool, dry and dark.\u003c\/strong\u003e A closed cupboard away from radiators, ovens and sunlit windows, with lids closed after every opening. Damp air softens capsule shells, so kitchens and bathrooms are poor choices.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eKeep a log.\u003c\/strong\u003e Write the two lot numbers in a notebook with the dates each container was first opened; any portion sent away for testing needs its own tag naming compound, lot and date.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eLaboratory practice.\u003c\/strong\u003e Gloves for opened capsules, no food or drink nearby, storage out of reach of children and pets, and disposal as chemical waste under local rules, not in household bins or drains.\u003c\/li\u003e\n\u003c\/ul\u003e\u003cp\u003eA sealed container keeps its 30-day return option; once opened, it no longer qualifies.\u003c\/p\u003e\u003ch2\u003eGlossary\u003c\/h2\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003ePPAR-delta\u003c\/strong\u003e: the delta member of the peroxisome proliferator-activated receptor family; Cardarine is a synthetic ligand of it.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eAndrogen receptor\u003c\/strong\u003e: the receptor testosterone activates, and the target of LGD-4033.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSARM\u003c\/strong\u003e: selective androgen receptor modulator; LGD-4033 is one, Cardarine is not.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSHBG\u003c\/strong\u003e: sex hormone-binding globulin, a blood protein that carries testosterone and fell in the 2013 LGD-4033 study.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCarcinogenicity study\u003c\/strong\u003e: a toxicology test in which rats or mice are exposed for most of their lifespan and examined for tumours.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eStereocentre\u003c\/strong\u003e: an atom allowing two mirror-image arrangements; LGD-4033 has two, Cardarine none.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eHPLC and LC-MS\u003c\/strong\u003e: separation of a dissolved sample on a column, read by a UV detector or by a mass spectrometer that also weighs each molecule.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMetabolite\u003c\/strong\u003e: a substance the body makes from another, such as Cardarine's sulfoxide and sulfone.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eLimit of detection\u003c\/strong\u003e: the smallest amount per millilitre a validated method can distinguish from a blank.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eStrict liability\u003c\/strong\u003e: the principle under which the presence of a banned substance in a sample is itself the violation, regardless of intent or how it got there.\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch2\u003eAbout the iMuscle Cardarine and Ligandrol stack\u003c\/h2\u003e\u003cp\u003eThe photographs on this listing show two iMuscle pots side by side: CARDARINE on a green label and LIGANDROL on a light blue one, each with its own box giving a capsule count and strength. Sold singly, those pots are labelled 60 capsules at 10 mg (\u003ca href=\"\/en-ro\/products\/imuscle-cardarine-gw501516-60-10mg\"\u003eiMuscle Cardarine\u003c\/a\u003e) and 60 capsules at 8 mg (\u003ca href=\"\/en-ro\/products\/imuscle-ligandrol-lgd4033-60-8mg\"\u003eiMuscle Ligandrol\u003c\/a\u003e). Please ask us to confirm the pots and labels in the stock held before ordering; until then this page quotes no bundle total.\u003c\/p\u003e\u003cp\u003eiMuscle offers the same pairing on its Romanian website under the title Cardarine GW501516, Ligandrol, next to its nine single pots. That is a different thing from the brand's combined series (VENOM, HULKED, COMBAT, MACHINE), capsules that each contain several compounds; Free Muscle does not stock that series. All our iMuscle listings are on the \u003ca href=\"\/en-ro\/collections\/brand-imuscle\"\u003eiMuscle brand page\u003c\/a\u003e, and stacks from every brand are grouped under \u003ca href=\"\/en-ro\/collections\/market-bundles\"\u003eBundles and Stacks\u003c\/a\u003e.\u003c\/p\u003e\u003cp\u003eThe two compounds belong to different classes: cardarine, a PPAR-delta agonist, was dropped from development after rodent cancer findings, and ligandrol is a non-steroidal SARM with one short trial in healthy men. Neither holds a UK licence, and WADA prohibits both, cardarine under S4 and ligandrol under S1. Each has a collection page: \u003ca href=\"\/en-ro\/collections\/cardarine\"\u003ecardarine\u003c\/a\u003e and \u003ca href=\"\/en-ro\/collections\/lgd-4033\"\u003eLGD-4033\u003c\/a\u003e.\u003c\/p\u003e\u003cp\u003eNo test document is shown for this stack. Any certificate iMuscle supplies belongs to the lot of one pot, so a two-pot stack involves two lots. Note the code printed on each label and \u003ca href=\"\/en-ro\/pages\/contact\"\u003econtact us\u003c\/a\u003e with both; the 2021 papers on the single ligandrol listing do not cover current stock, and Janoshik testing applies only to Free Muscle's own brand.\u003c\/p\u003e\u003ch2\u003eRelated\u003c\/h2\u003e\u003cul\u003e\n\u003cli\u003e\u003ca href=\"\/en-ro\/collections\/cardarine\"\u003eCardarine (GW-501516), all brands\u003c\/a\u003e\u003c\/li\u003e\n\u003cli\u003e\u003ca href=\"\/en-ro\/collections\/lgd-4033\"\u003eLGD-4033 (Ligandrol), all brands\u003c\/a\u003e\u003c\/li\u003e\n\u003cli\u003e\u003ca href=\"\/en-ro\/collections\/brand-imuscle\"\u003eiMuscle brand collection\u003c\/a\u003e\u003c\/li\u003e\n\u003cli\u003e\u003ca href=\"\/en-ro\/collections\/market-bundles\"\u003eAll bundles\u003c\/a\u003e\u003c\/li\u003e\n\u003cli\u003e\u003ca href=\"\/en-ro\/blogs\/news\/cardarine-gw-501516-what-happened-in-development\"\u003eCardarine (GW-501516): what happened in development\u003c\/a\u003e\u003c\/li\u003e\n\u003cli\u003e\u003ca href=\"\/en-ro\/blogs\/news\/lgd-4033-ligandrol-research-guide\"\u003eLGD-4033 (ligandrol): the research guide\u003c\/a\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\u003cp\u003e\u003cem\u003eResearch compounds sold by Free Muscle are supplied for laboratory research use only and are not for human consumption. They are not authorised as medicines by the MHRA, EMA or FDA, are not food supplements, and are sold only to adults aged 18 or over. Nothing on this page is medical or dosing advice.\u003c\/em\u003e\u003c\/p\u003e\u003ch2\u003eReferences\u003c\/h2\u003e\u003col\u003e\n\u003cli\u003eOlson EJ, et al. Lipid effects of peroxisome proliferator-activated receptor-delta agonist GW501516 in subjects with low high-density lipoprotein cholesterol: characteristics of metabolic syndrome. Arterioscler Thromb Vasc Biol. 2012;32(9):2289-94. \u003ca href=\"https:\/\/pubmed.ncbi.nlm.nih.gov\/22814748\/\" rel=\"noopener\"\u003ePMID: 22814748\u003c\/a\u003e.\u003c\/li\u003e\n\u003cli\u003eBasaria S, et al. The safety, pharmacokinetics, and effects of LGD-4033, a novel nonsteroidal oral, selective androgen receptor modulator, in healthy young men. J Gerontol A Biol Sci Med Sci. 2013;68(1):87-95. \u003ca href=\"https:\/\/pubmed.ncbi.nlm.nih.gov\/22459616\/\" rel=\"noopener\"\u003ePMID: 22459616\u003c\/a\u003e.\u003c\/li\u003e\n\u003cli\u003eVan Wagoner RM, et al. Chemical Composition and Labeling of Substances Marketed as Selective Androgen Receptor Modulators and Sold via the Internet. JAMA. 2017;318(20):2004-2010. \u003ca href=\"https:\/\/pubmed.ncbi.nlm.nih.gov\/29183075\/\" rel=\"noopener\"\u003ePMID: 29183075\u003c\/a\u003e.\u003c\/li\u003e\n\u003cli\u003eThevis M, et al. Characterization of two major urinary metabolites of the PPARdelta-agonist GW1516 and implementation of the drug in routine doping controls. Anal Bioanal Chem. 2010;396(7):2479-91. \u003ca href=\"https:\/\/pubmed.ncbi.nlm.nih.gov\/19946680\/\" rel=\"noopener\"\u003ePMID: 19946680\u003c\/a\u003e.\u003c\/li\u003e\n\u003cli\u003eLoRusso P, et al. A First-in-Human Phase 1 Study of a Novel Selective Androgen Receptor Modulator (SARM), RAD140, in ER+\/HER2- Metastatic Breast Cancer. Clin Breast Cancer. 2022;22(1):67-77. \u003ca href=\"https:\/\/pubmed.ncbi.nlm.nih.gov\/34565686\/\" rel=\"noopener\"\u003ePMID: 34565686\u003c\/a\u003e.\u003c\/li\u003e\n\u003c\/ol\u003e","brand":"iMuscle","offers":[{"title":"Default Title","offer_id":48468978991330,"sku":null,"price":70.99,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0772\/3499\/5426\/files\/Combo4.jpg?v=1789931398"},{"product_id":"imuscle-cardarine-ibutamoren-andarine","title":"iMuscle Cardarine + Ibutamoren + Andarine stack","description":"\u003cp\u003e\u003cstrong\u003eiMuscle Cardarine + Ibutamoren + Andarine\u003c\/strong\u003e is a three-compound bundle from iMuscle that groups Cardarine (GW-501516), MK-677 (Ibutamoren) and Andarine (S-4). In its photographs each compound has a labelled iMuscle pot of its own; their printed strengths are set out in the iMuscle section below, and a figure for the three together waits until the stock on hand has been checked against those photographs. Free Muscle stocks it through the \u003ca href=\"\/en-ro\/pages\/muscle-market\"\u003eMuscle Market\u003c\/a\u003e range and supplies it for laboratory research only, not for human consumption, to adults aged 18 and over.\u003c\/p\u003e\u003cp\u003eThe bundle simply places three compounds in one listing; we make no claim that they do anything together. The page takes each compound in turn: what it is, what research measured, its UK and sporting status, and what its batch certificate should show.\u003c\/p\u003e\u003ch2\u003eAbout the compounds in this bundle\u003c\/h2\u003e\u003ch3\u003eCardarine (GW-501516)\u003c\/h3\u003e\u003cp\u003eCardarine, also written GW501516 or endurobol, is a synthetic PPAR-delta agonist developed by GlaxoSmithKline and Ligand for lipid disorders; it is not a SARM. A 2012 twelve-week human trial in subjects with low HDL cholesterol recorded a rise in HDL and a fall in triglycerides, but was not designed to assess long-term safety (Olson et al., 2012). Clinical development was halted after two-year rodent carcinogenicity studies found tumours in multiple organs. Every brand we stock is on the \u003ca href=\"\/en-ro\/collections\/cardarine\"\u003eCardarine collection page\u003c\/a\u003e.\u003c\/p\u003e\u003ch3\u003eMK-677 (Ibutamoren)\u003c\/h3\u003e\u003cp\u003eMK-677, also called ibutamoren or L-163,191, is an oral ghrelin receptor agonist and growth hormone secretagogue, not a SARM. In a 2008 two-year randomised trial in 65 healthy older adults, fat-free mass rose by about 1.1 kg versus placebo, with increased appetite, fasting glucose, insulin resistance and oedema also recorded (Nass et al., 2008). It has never been approved. See the \u003ca href=\"\/en-ro\/collections\/mk-677\"\u003eMK-677 collection page\u003c\/a\u003e.\u003c\/p\u003e\u003ch3\u003eAndarine (S-4)\u003c\/h3\u003e\u003cp\u003eAndarine, also called S-4, is an early non-steroidal selective androgen receptor modulator from GTx. The published evidence is almost entirely preclinical: in a 2007 study in ovariectomised rats, S-4 preserved bone mass and reduced body fat (Kearbey et al., 2007). It never reached late-stage human trials and has no approval anywhere. Reports of visual disturbance are widely repeated but have not been characterised in a published controlled trial. See the \u003ca href=\"\/en-ro\/collections\/andarine\"\u003eAndarine collection page\u003c\/a\u003e.\u003c\/p\u003e\u003cp\u003eNothing summarised above is a claim about this product, and no published study has examined these compounds together.\u003c\/p\u003e\u003ch2\u003eThis listing\u003c\/h2\u003e\u003cul\u003e\n\u003cli\u003eBrand: iMuscle\u003c\/li\u003e\n\u003cli\u003eCompounds: Cardarine (GW-501516), MK-677 (Ibutamoren) and Andarine (S-4)\u003c\/li\u003e\n\u003cli\u003eForm: capsules\u003c\/li\u003e\n\u003cli\u003ePack: three iMuscle pots in the photographs, each marked 60 capsules; confirm with us before ordering that the stock on hand matches\u003c\/li\u003e\n\u003cli\u003eStrength: carried on each pot's own label, 10 mg (cardarine), 10 mg (ibutamoren) and 15 mg (andarine) per capsule when sold on their own; the bundle listing gives no figure of its own\u003c\/li\u003e\n\u003cli\u003eBundle basis: one listing for three compounds; no combined effect is claimed\u003c\/li\u003e\n\u003cli\u003eUse: laboratory research only, not for human consumption, adults 18 and over\u003c\/li\u003e\n\u003c\/ul\u003e\u003cp\u003eNo milligram total for the three is worked out here while the stock on hand remains to be checked. The single-compound iMuscle listings carry a label strength: \u003ca href=\"\/en-ro\/products\/imuscle-cardarine-gw501516-60-10mg\"\u003eiMuscle Cardarine GW-501516\u003c\/a\u003e, \u003ca href=\"\/en-ro\/products\/imuscle-ibutamoren-mk-677-60-10mg\"\u003eiMuscle Ibutamoren MK-677\u003c\/a\u003e and \u003ca href=\"\/en-ro\/products\/imuscle-andarine-s4-60-15mg\"\u003eiMuscle Andarine S-4\u003c\/a\u003e. How to set label strengths against each other is explained in \u003ca href=\"\/en-ro\/blogs\/news\/price-per-mg-compare-sarms-peptides\"\u003eprice per milligram\u003c\/a\u003e.\u003c\/p\u003e\u003ch2\u003eCardarine, MK-677 and Andarine in the UK: buying, legal status and what to check\u003c\/h2\u003e\u003cp\u003eSearches such as \"cardarine UK legal\", \"MK 677 UK buy\" and \"MK677 UK supplier\" ask two things: may each compound be sold in Britain, and how would a buyer know what a listing holds?\u003c\/p\u003e\u003ch3\u003eThe legal position, compound by compound\u003c\/h3\u003e\u003cp\u003eNone of the three is a licensed medicine in the UK (MHRA) or an authorised food supplement. They are not controlled drugs and may be sold to adults for laboratory research, the only basis for this listing. The limits concern what they may be sold as: not as a medicine or food, and not with directions for use or a promised result.\u003c\/p\u003e\u003ctable\u003e\n\u003cthead\u003e\u003ctr\u003e\n\u003cth\u003eCompound\u003c\/th\u003e\n\u003cth\u003ePharmacological class\u003c\/th\u003e\n\u003cth\u003eUK medicine licence\u003c\/th\u003e\n\u003cth\u003eWADA Prohibited List\u003c\/th\u003e\n\u003c\/tr\u003e\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003eCardarine\u003c\/td\u003e\n\u003ctd\u003ePPAR-delta agonist\u003c\/td\u003e\n\u003ctd\u003eNone\u003c\/td\u003e\n\u003ctd\u003eS4, hormone and metabolic modulators\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMK-677\u003c\/td\u003e\n\u003ctd\u003eGhrelin receptor agonist, growth hormone secretagogue\u003c\/td\u003e\n\u003ctd\u003eNone\u003c\/td\u003e\n\u003ctd\u003eS2, growth hormone secretagogues\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eAndarine\u003c\/td\u003e\n\u003ctd\u003eSelective androgen receptor modulator\u003c\/td\u003e\n\u003ctd\u003eNone\u003c\/td\u003e\n\u003ctd\u003eS1, anabolic agents\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\u003cp\u003eAll three are banned in tested sport at all times. MK-677 has a page of its own on \u003ca href=\"\/en-ro\/pages\/mk-677-legal-status-uk\"\u003eMK-677 legal status in the UK\u003c\/a\u003e, and the SARM class is introduced in \u003ca href=\"\/en-ro\/blogs\/news\/what-are-sarms-the-2026-research-guide\"\u003eWhat are SARMs? The 2026 research guide\u003c\/a\u003e.\u003c\/p\u003e\u003ch3\u003eWhat official medicines laboratories have found\u003c\/h3\u003e\u003cp\u003eThese three compounds are among the molecules official medicines laboratories report most often. Over five years, the falsified medicines working group of the official medicines control laboratory network, whose contributors included a laboratory at the MHRA, pooled 354 results on 324 samples of SARMs, metabolic modulators and growth hormone secretagogues from 14 laboratories in 13 countries, most of them from illegal distribution (Barrios et al., 2025). Ibutamoren, ligandrol, ostarine, cardarine and andarine were the five molecules reported most often. About a quarter of the products were presented as dietary supplements, which the authors flagged because a buyer may not realise that an unapproved pharmaceutical is inside. A name on a pot is a claim; only analysis of the lot tests it.\u003c\/p\u003e\u003ch3\u003eWhat a checkable listing shows, and where this one stands\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eA named manufacturer and a named UK seller.\u003c\/strong\u003e Made by iMuscle; sold by FreeMuscle, a business registered in Andorra, and dispatched from Scunthorpe.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eA stated strength for every compound.\u003c\/strong\u003e Not given by iMuscle for this bundle, so it does not meet this check; the single-compound listings above do.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eBatch paperwork for each of the three compounds.\u003c\/strong\u003e iMuscle certificates appear here only when the manufacturer provides them for the stock on our shelves.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eNo directions for use and no promised outcomes.\u003c\/strong\u003e None appear on this page; research use only, 18 and over.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eTracked, discreet delivery.\u003c\/strong\u003e Free tracked UK delivery in plain packaging, orders placed before 2pm Monday to Friday processed the same working day, EU delivery in 3-7 working days (\u003ca href=\"\/en-ro\/pages\/shipping\"\u003edelivery\u003c\/a\u003e).\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eA returns route.\u003c\/strong\u003e Unopened items within 30 days (\u003ca href=\"\/en-ro\/pages\/guarantee\"\u003eguarantee\u003c\/a\u003e).\u003c\/li\u003e\n\u003c\/ul\u003e\u003cp\u003eReviews describe delivery, not contents. Our \u003ca href=\"\/en-ro\/blogs\/news\/how-to-choose-a-sarms-supplier-uk-checklist\"\u003eUK supplier checklist\u003c\/a\u003e applies the same tests to any shop.\u003c\/p\u003e\u003ch2\u003eCapsules compared with other forms\u003c\/h2\u003e\u003cp\u003eEach compound is also sold as a research liquid (hence searches for \"MK677 UK liquid\") and as powder. None of the three is a peptide. Cardarine (molecular weight 453.5), MK-677 (528.7 as the free base) and andarine (441.4) are small synthetic molecules, and MK-677 was developed as an orally active ghrelin mimetic, which is how the 2008 trial gave it. Why swallowed peptides are a different case is covered in \u003ca href=\"\/en-ro\/blogs\/news\/do-oral-peptides-work\"\u003edo oral peptides work\u003c\/a\u003e.\u003c\/p\u003e\u003cp\u003eWhat changes between formats is where the quantity per unit is fixed:\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eCapsules\u003c\/strong\u003e have their content fixed when powder is filled into shells. A measured figure per capsule is possible, but one pooled result averages away the spread between individual capsules, and in a bundle it must also be reported separately for each compound.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eLiquids\u003c\/strong\u003e carry a concentration, so the amount in any volume drawn depends on the measuring device, on the compound having fully dissolved and on solvent not evaporating after the bottle is opened.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePowders\u003c\/strong\u003e leave every portion to the buyer's own scales, so no label figure per unit exists to check.\u003c\/li\u003e\n\u003c\/ul\u003e\u003cp\u003eSalt form matters as well. MK-677 is often supplied as the mesylate salt, which is heavier than the free base, so a label should say which form its milligrams refer to. No study has compared formats for any of these three compounds, and nothing here suggests one form behaves differently in the body. Here that checkable figure per unit sits on each pot's own label, and the bundle listing adds none of its own.\u003c\/p\u003e\u003ch2\u003eMK-677 compared with ipamorelin\u003c\/h2\u003e\u003cp\u003eMK-677 is the most searched of the three compounds in this bundle, and \"ibutamoren vs ipamorelin\" is the comparison that appears in its search suggestions. The two share a receptor and little else.\u003c\/p\u003e\u003ctable\u003e\n\u003cthead\u003e\u003ctr\u003e\n\u003cth\u003ePoint\u003c\/th\u003e\n\u003cth\u003eMK-677 (in this bundle)\u003c\/th\u003e\n\u003cth\u003eIpamorelin\u003c\/th\u003e\n\u003c\/tr\u003e\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003eChemical type\u003c\/td\u003e\n\u003ctd\u003eNon-peptide small molecule\u003c\/td\u003e\n\u003ctd\u003eSynthetic pentapeptide, Aib-His-D-2-Nal-D-Phe-Lys-NH2\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eFormula and molecular weight\u003c\/td\u003e\n\u003ctd\u003eC27H36N4O5S, 528.7\u003c\/td\u003e\n\u003ctd\u003eC38H49N9O5, 711.9\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eCAS number\u003c\/td\u003e\n\u003ctd\u003e159634-47-6\u003c\/td\u003e\n\u003ctd\u003e170851-70-4\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eReceptor\u003c\/td\u003e\n\u003ctd\u003eGHS-R1a, the ghrelin receptor\u003c\/td\u003e\n\u003ctd\u003eGHS-R1a, the ghrelin receptor\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eRoute in published human research\u003c\/td\u003e\n\u003ctd\u003eBy mouth\u003c\/td\u003e\n\u003ctd\u003eInjected or infused, as a peptide\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eLength of human studies\u003c\/td\u003e\n\u003ctd\u003eRandomised trial of up to two years\u003c\/td\u003e\n\u003ctd\u003eShort pharmacology studies only\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eUK status\u003c\/td\u003e\n\u003ctd\u003eUnlicensed; research use only\u003c\/td\u003e\n\u003ctd\u003eUnlicensed; research use only\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eWADA\u003c\/td\u003e\n\u003ctd\u003eS2, prohibited at all times\u003c\/td\u003e\n\u003ctd\u003eS2, prohibited at all times\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\u003cp\u003eBoth compounds mimic ghrelin, the stomach hormone that signals hunger, and both prompt the pituitary gland to release its own growth hormone rather than supplying any. The differences lie in the chemistry and in the depth of the record. MK-677 is a compact molecule absorbed from the gut, and its longest trial recorded increased appetite, raised fasting glucose, reduced insulin sensitivity and oedema alongside the change in fat-free mass. Ipamorelin is a chain of five amino acids, two of them in unusual forms, and has no human study of comparable length, so its long-term profile in people is unknown rather than favourable. No trial has given both compounds to the same participants, which means neither can be ranked against the other. Ipamorelin brands are on the \u003ca href=\"\/en-ro\/collections\/ipamorelin\"\u003eipamorelin collection page\u003c\/a\u003e; background is in the \u003ca href=\"\/en-ro\/blogs\/news\/ipamorelin-research-guide\"\u003eipamorelin research guide\u003c\/a\u003e and \u003ca href=\"\/en-ro\/blogs\/news\/mk-677-vs-ipamorelin-vs-hgh\"\u003eMK-677 vs ipamorelin vs HGH\u003c\/a\u003e.\u003c\/p\u003e\u003cp\u003eFor the other two compounds, cardarine is often set against \u003ca href=\"\/en-ro\/collections\/sr9009\"\u003eSR9009\u003c\/a\u003e and andarine against \u003ca href=\"\/en-ro\/collections\/ostarine\"\u003eostarine\u003c\/a\u003e.\u003c\/p\u003e\u003ch2\u003eReading the certificate of analysis for this product\u003c\/h2\u003e\u003cp\u003eCertificates for this bundle come from iMuscle, not from us, and we display one only when iMuscle provides it for the batch in our stock. Because each of the three compounds may come from its own production lot, request paperwork by compound name. A PDF without a batch number is not a batch certificate. The Janoshik Analytical programme, under which an independent laboratory assays every Free Muscle-brand batch and the certificate is emailed on request, does not extend to iMuscle.\u003c\/p\u003e\u003ctable\u003e\n\u003cthead\u003e\u003ctr\u003e\n\u003cth\u003eCompound\u003c\/th\u003e\n\u003cth\u003eCAS number\u003c\/th\u003e\n\u003cth\u003eFormula and molecular weight\u003c\/th\u003e\n\u003cth\u003ePoint to check\u003c\/th\u003e\n\u003c\/tr\u003e\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003eCardarine\u003c\/td\u003e\n\u003ctd\u003e317318-70-0\u003c\/td\u003e\n\u003ctd\u003eC21H18F3NO3S2, 453.5\u003c\/td\u003e\n\u003ctd\u003eNo stereocentre, so there is no mirror-image form to rule out\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMK-677\u003c\/td\u003e\n\u003ctd\u003e159634-47-6\u003c\/td\u003e\n\u003ctd\u003eC27H36N4O5S, 528.7 (free base)\u003c\/td\u003e\n\u003ctd\u003eWhether results are expressed as free base or mesylate salt\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eAndarine\u003c\/td\u003e\n\u003ctd\u003e401900-40-1\u003c\/td\u003e\n\u003ctd\u003eC19H18F3N3O6, 441.4\u003c\/td\u003e\n\u003ctd\u003eThe (2S) form; its mirror image has the same mass\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eIdentity.\u003c\/strong\u003e An HPLC retention time matched to a reference standard, or an LC-MS mass that fits the formula above. A certificate that names one compound says nothing about the other two.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePurity.\u003c\/strong\u003e Usually a percentage of HPLC peak area. It grades what the material is, not how much of it a capsule holds.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eContent per capsule.\u003c\/strong\u003e For this bundle there is no label figure to compare it with, so a measured content would be the first statement of strength anyone has made, not a check on one.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eLot, date and issuing laboratory.\u003c\/strong\u003e Compare the lot code with the label on your pot; the date shows the result's age, and a named laboratory can verify it.\u003c\/li\u003e\n\u003c\/ul\u003e\u003cp\u003eFor this brand, a missing field leaves a specific question open. No certificate means nothing independent confirms which compounds are present. Identity without content confirms presence, not quantity. \u003ca href=\"\/en-ro\/pages\/contact\"\u003eContact us\u003c\/a\u003e with the lot numbers and we will tell you what documentation exists. See also \u003ca href=\"\/en-ro\/blogs\/news\/how-to-read-a-certificate-of-analysis\"\u003ehow to read a COA\u003c\/a\u003e and our \u003ca href=\"\/en-ro\/pages\/lab-tests\"\u003elab tests\u003c\/a\u003e page.\u003c\/p\u003e\u003ch2\u003eDetection, sport and testing\u003c\/h2\u003e\u003cp\u003eEach compound in this bundle sits in a different section of the WADA Prohibited List, applied in the UK by UK Anti-Doping: andarine in S1, MK-677 in S2 and cardarine in S4. All three are prohibited in and out of competition. Under strict liability an athlete answers for any prohibited substance in their sample, whatever its source.\u003c\/p\u003e\u003cp\u003eCardarine has the most detailed published detection work of the three. It entered the WADA list in January 2009, first categorised as a gene doping substance. The Cologne anti-doping laboratory then identified its two main urinary metabolites, a sulfoxide and a sulfone, and validated a urine screening method with a limit of detection of 0.1 ng\/ml that was brought into routine doping controls (Thevis et al., 2010). MK-677 and andarine are also screened for by accredited laboratories, but no verified study cited here gives a window for any of the three after capsules of unstated strength. The accurate answer for each is: detectable, window not established.\u003c\/p\u003e\u003ch2\u003eStorage, stability and handling\u003c\/h2\u003e\u003cp\u003eWe know of no published shelf-life study for cardarine, MK-677 or andarine in capsule form, so no shelf life is stated here. Any expiry date iMuscle prints is the limit to work to, and a certificate describes a batch only on the day it was tested.\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eCheck on arrival.\u003c\/strong\u003e Confirm the seal is intact and note each lot number with the date received. Opening a container ends the 30-day return option, which covers unopened items only.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eStore closed, cool, dry and dark.\u003c\/strong\u003e Humidity in kitchens and bathrooms can soften or crack capsule shells. Leave any desiccant sachet in place and close the lid straight after opening.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eKeep each compound traceable.\u003c\/strong\u003e Do not decant, mix or relabel capsules. Once separated from the container, a capsule has no link to its lot number or certificate.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eHandle as laboratory chemicals.\u003c\/strong\u003e Gloves when handling opened capsules or powder, no food or drink in the work area, storage out of reach of children and pets, and disposal as chemical waste under local rules, never in household bins or drains.\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch2\u003eGlossary\u003c\/h2\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003ePPAR-delta\u003c\/strong\u003e: a receptor inside the cell nucleus that controls genes for using fatty acids as fuel; cardarine was designed to switch it on.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eGHS-R1a\u003c\/strong\u003e: the growth hormone secretagogue receptor, also called the ghrelin receptor, through which MK-677 and ipamorelin act.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eGrowth hormone secretagogue\u003c\/strong\u003e: any substance that prompts the pituitary gland to release growth hormone.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSARM\u003c\/strong\u003e: selective androgen receptor modulator; andarine is one, while cardarine and MK-677 are not.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCarcinogenicity study\u003c\/strong\u003e: a long-term animal study that looks for tumours; the finding that stopped cardarine's development.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFree base and mesylate\u003c\/strong\u003e: the uncharged molecule and its heavier methanesulfonate salt; equal milligrams of each hold different amounts of ibutamoren.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eLimit of detection\u003c\/strong\u003e: the lowest concentration a validated method can reliably report, a measure of sensitivity rather than time.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eStrict liability\u003c\/strong\u003e: in anti-doping, the principle that intent does not matter; a positive sample is a violation even when a product was mislabelled.\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch2\u003eAbout the iMuscle Cardarine, Ibutamoren and Andarine stack\u003c\/h2\u003e\u003cp\u003eThree iMuscle pots appear in this listing's photographs: green CARDARINE, purple IBUTAMOREN and orange ANDARINE S4. Each label prints its own count and milligram figure, and the same pots sold on their own are labelled 60 capsules at 10 mg, 10 mg and 15 mg respectively (\u003ca href=\"\/en-ro\/products\/imuscle-cardarine-gw501516-60-10mg\"\u003eCardarine\u003c\/a\u003e, \u003ca href=\"\/en-ro\/products\/imuscle-ibutamoren-mk-677-60-10mg\"\u003eIbutamoren MK-677\u003c\/a\u003e, \u003ca href=\"\/en-ro\/products\/imuscle-andarine-s4-60-15mg\"\u003eAndarine S-4\u003c\/a\u003e). If the pot count or strength matters to your records, check with us what the stock on hand contains before you order.\u003c\/p\u003e\u003cp\u003eOn iMuscle's own Romanian shop the trio is sold as Cardarine, Ibutamoren, Andarine, one of eight stacks the brand lists, all eight of which we carry. None of them should be confused with iMuscle's combined capsules (VENOM, HULKED, COMBAT and MACHINE), which hold several compounds in one capsule and are not sold here. The \u003ca href=\"\/en-ro\/collections\/brand-imuscle\"\u003eiMuscle brand page\u003c\/a\u003e lists every iMuscle product we stock.\u003c\/p\u003e\u003cp\u003eThe three compounds are aimed at unrelated targets. Cardarine acts on PPAR-delta, ibutamoren is an oral growth hormone secretagogue and andarine is an early non-steroidal SARM known from animal work. None is licensed in the UK, and WADA covers them in three different sections, S4, S2 and S1. Their collection pages are \u003ca href=\"\/en-ro\/collections\/cardarine\"\u003ecardarine\u003c\/a\u003e, \u003ca href=\"\/en-ro\/collections\/mk-677\"\u003eMK-677\u003c\/a\u003e and \u003ca href=\"\/en-ro\/collections\/andarine\"\u003eandarine\u003c\/a\u003e.\u003c\/p\u003e\u003cp\u003eThis listing's gallery has no test document. The single ibutamoren and andarine listings show 2021 papers that cannot be matched to current lots, and the cardarine single shows none, so the practical step is to read the lot code on each of the three pots and send all three to us through the \u003ca href=\"\/en-ro\/pages\/contact\"\u003econtact page\u003c\/a\u003e. We pass on what iMuscle supplies; Janoshik certificates are issued only for Free Muscle-brand batches.\u003c\/p\u003e\u003ch2\u003eRelated\u003c\/h2\u003e\u003cul\u003e\n\u003cli\u003e\n\u003ca href=\"\/en-ro\/collections\/cardarine\"\u003eCardarine (GW-501516), all brands\u003c\/a\u003e and \u003ca href=\"\/en-ro\/blogs\/news\/cardarine-gw-501516-what-happened-in-development\"\u003ecardarine: what happened in development\u003c\/a\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003ca href=\"\/en-ro\/collections\/mk-677\"\u003eMK-677 (Ibutamoren), all brands\u003c\/a\u003e and \u003ca href=\"\/en-ro\/blogs\/news\/mk-677-ibutamoren-what-the-research-says\"\u003eMK-677: what the research says\u003c\/a\u003e\n\u003c\/li\u003e\n\u003cli\u003e\u003ca href=\"\/en-ro\/collections\/andarine\"\u003eAndarine (S-4), all brands\u003c\/a\u003e\u003c\/li\u003e\n\u003cli\u003e\n\u003ca href=\"\/en-ro\/collections\/ipamorelin\"\u003eIpamorelin\u003c\/a\u003e, compared above\u003c\/li\u003e\n\u003cli\u003e\u003ca href=\"\/en-ro\/collections\/brand-imuscle\"\u003eiMuscle brand collection\u003c\/a\u003e\u003c\/li\u003e\n\u003cli\u003e\u003ca href=\"\/en-ro\/collections\/market-bundles\"\u003eAll bundles\u003c\/a\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\u003cp\u003e\u003cem\u003eResearch compounds sold by Free Muscle are supplied for laboratory research use only and are not for human consumption. They are not authorised as medicines by the MHRA, EMA or FDA, are not food supplements, and are sold only to adults aged 18 or over. Nothing on this page is medical or dosing advice.\u003c\/em\u003e\u003c\/p\u003e\u003ch2\u003eReferences\u003c\/h2\u003e\u003col\u003e\n\u003cli\u003eOlson EJ, et al. Lipid effects of peroxisome proliferator-activated receptor-delta agonist GW501516 in subjects with low high-density lipoprotein cholesterol: characteristics of metabolic syndrome. Arterioscler Thromb Vasc Biol. 2012;32(9):2289-94. \u003ca href=\"https:\/\/pubmed.ncbi.nlm.nih.gov\/22814748\/\" rel=\"noopener\"\u003ePMID: 22814748\u003c\/a\u003e.\u003c\/li\u003e\n\u003cli\u003eNass R, et al. Effects of an oral ghrelin mimetic on body composition and clinical outcomes in healthy older adults: a randomized trial. Ann Intern Med. 2008;149(9):601-11. \u003ca href=\"https:\/\/pubmed.ncbi.nlm.nih.gov\/18981485\/\" rel=\"noopener\"\u003ePMID: 18981485\u003c\/a\u003e.\u003c\/li\u003e\n\u003cli\u003eKearbey JD, et al. Selective androgen receptor modulator (SARM) treatment prevents bone loss and reduces body fat in ovariectomized rats. Pharm Res. 2007;24(2):328-35. \u003ca href=\"https:\/\/pubmed.ncbi.nlm.nih.gov\/17063395\/\" rel=\"noopener\"\u003ePMID: 17063395\u003c\/a\u003e.\u003c\/li\u003e\n\u003cli\u003eBarrios MM, et al. SARMs, Metabolic Modulators and Growth Hormone Secretagogues in Suspected Illegal Medicines, Bought as Sport Performance Enhancers: A Retro- and Prospective Study Within the GEON. Drug Test Anal. 2025;17(10):2078-2085. \u003ca href=\"https:\/\/pubmed.ncbi.nlm.nih.gov\/40551438\/\" rel=\"noopener\"\u003ePMID: 40551438\u003c\/a\u003e.\u003c\/li\u003e\n\u003cli\u003eThevis M, et al. Characterization of two major urinary metabolites of the PPARdelta-agonist GW1516 and implementation of the drug in routine doping controls. Anal Bioanal Chem. 2010;396(7):2479-91. \u003ca href=\"https:\/\/pubmed.ncbi.nlm.nih.gov\/19946680\/\" rel=\"noopener\"\u003ePMID: 19946680\u003c\/a\u003e.\u003c\/li\u003e\n\u003c\/ol\u003e","brand":"iMuscle","offers":[{"title":"Default Title","offer_id":48468979024098,"sku":null,"price":113.99,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0772\/3499\/5426\/files\/CardarineIbutamorenAndarine_f4b875eb-368c-4d5e-afbf-f01a1688b29e.jpg?v=1789931400"},{"product_id":"imuscle-cardarine-ostarine-mk2866","title":"iMuscle Cardarine + Ostarine MK-2866 stack","description":"\u003cp\u003e\u003cstrong\u003eiMuscle Cardarine + Ostarine MK-2866\u003c\/strong\u003e is a two-compound bundle from iMuscle that pairs Cardarine (GW-501516) with Ostarine (MK-2866). The photographs show a labelled iMuscle pot of each, with the strengths printed on them listed in the iMuscle section below; a combined figure is withheld pending confirmation of what is in the pots we hold. The bundle is a pricing convenience for buying both in one listing; we make no claim that the two do anything together. Supplied for laboratory research only, not for human consumption, to adults aged 18 and over.\u003c\/p\u003e\u003ch2\u003eAbout the compounds in this bundle\u003c\/h2\u003e\u003ch3\u003eCardarine (GW-501516)\u003c\/h3\u003e\u003cp\u003eCardarine, also written GW501516 or endurobol, is a synthetic PPAR-delta agonist developed by GlaxoSmithKline and Ligand for lipid disorders; it is not a SARM. A 2012 twelve-week human trial in subjects with low HDL cholesterol recorded a rise in HDL and a fall in triglycerides, but was not designed to assess long-term safety (Olson et al., 2012). Clinical development was halted after two-year rodent carcinogenicity studies found tumours in multiple organs. Every brand we stock is on the \u003ca href=\"\/en-ro\/collections\/cardarine\"\u003eCardarine collection page\u003c\/a\u003e, and the history is told in \u003ca href=\"\/en-ro\/blogs\/news\/cardarine-gw-501516-what-happened-in-development\"\u003ecardarine: what happened in development\u003c\/a\u003e.\u003c\/p\u003e\u003ch3\u003eOstarine (MK-2866)\u003c\/h3\u003e\u003cp\u003eOstarine, also called MK-2866 or enobosarm, is a non-steroidal selective androgen receptor modulator developed by GTx for muscle wasting and the most clinically studied SARM. In a 2011 placebo-controlled Phase 2 trial in 120 healthy elderly men and postmenopausal women, lean body mass rose by an average of 1.3 kg more than placebo over twelve weeks at the highest dose studied. HDL cholesterol fell in a dose-dependent way, eight participants had transient rises in the liver enzyme ALT, and one was withdrawn for this reason (Dalton et al., 2011). Later Phase 3 trials in people with cancer-related muscle loss did not lead to approval. See the \u003ca href=\"\/en-ro\/collections\/ostarine\"\u003eOstarine collection page\u003c\/a\u003e and the \u003ca href=\"\/en-ro\/blogs\/news\/ostarine-mk-2866-research-guide\"\u003eostarine research guide\u003c\/a\u003e.\u003c\/p\u003e\u003cp\u003eNothing summarised above is a claim about this product, and we know of no published study that has examined these compounds together.\u003c\/p\u003e\u003ch2\u003eThis listing\u003c\/h2\u003e\u003cul\u003e\n\u003cli\u003eBrand: iMuscle\u003c\/li\u003e\n\u003cli\u003eCompounds: Cardarine (GW-501516) and Ostarine (MK-2866)\u003c\/li\u003e\n\u003cli\u003eForm: capsules\u003c\/li\u003e\n\u003cli\u003ePack: a pair of iMuscle pots in the photographs, both labelled 60 capsules; ask us to verify the pots we hold\u003c\/li\u003e\n\u003cli\u003eStrength: stated by each pot's label and not by the bundle listing; as singles they read 10 mg (cardarine) and 15 mg (ostarine) per capsule\u003c\/li\u003e\n\u003cli\u003eBundle basis: pricing convenience only; no combined effect is claimed\u003c\/li\u003e\n\u003cli\u003eUse: laboratory research only, not for human consumption, adults 18 and over\u003c\/li\u003e\n\u003c\/ul\u003e\u003cp\u003eA milligram total for the pair is not worked out here while what is in the pots we hold remains unconfirmed. The single-compound listings, \u003ca href=\"\/en-ro\/products\/imuscle-cardarine-gw501516-60-10mg\"\u003eiMuscle Cardarine GW-501516\u003c\/a\u003e and \u003ca href=\"\/en-ro\/products\/imuscle-ostarine-k2866-60-15mg\"\u003eiMuscle Ostarine MK-2866\u003c\/a\u003e, carry a label strength; see \u003ca href=\"\/en-ro\/blogs\/news\/price-per-mg-compare-sarms-peptides\"\u003eprice per milligram\u003c\/a\u003e for how to compare them.\u003c\/p\u003e\u003ch2\u003eCardarine and Ostarine in the UK: buying, legal status and what to check\u003c\/h2\u003e\u003cp\u003eSearches such as \"cardarine UK legal\", \"MK 2866 buy UK\" and \"cardarine UK reviews\" ask two things: is the purchase lawful, and will the seller send what the label says.\u003c\/p\u003e\u003ch3\u003eThe legal position\u003c\/h3\u003e\u003cp\u003eThis bundle contains Cardarine and Ostarine. Neither is a licensed medicine in the UK (MHRA) or an authorised food supplement. They are not controlled drugs and may be sold to adults for laboratory research, the only basis for this listing. Selling either with directions for human use, or with promises of physical results, could bring the product within the legal definition of a medicine, which is why this page gives neither. Both are on the WADA Prohibited List, Cardarine under S4 (hormone and metabolic modulators) and Ostarine under S1 (anabolic agents), and are banned in tested sport at all times. The class is introduced in \u003ca href=\"\/en-ro\/blogs\/news\/what-are-sarms-the-2026-research-guide\"\u003eWhat are SARMs? The 2026 research guide\u003c\/a\u003e, although only ostarine belongs to it.\u003c\/p\u003e\u003ch3\u003eSigns of a listing that can be checked\u003c\/h3\u003e\u003col\u003e\n\u003cli\u003e\n\u003cstrong\u003eA manufacturer and a seller you can name.\u003c\/strong\u003e Here the maker is iMuscle and the seller is FreeMuscle, a business registered in Andorra with UK operations and dispatch in Scunthorpe.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eA batch number on every pot.\u003c\/strong\u003e Without one, no document can be matched to what arrived.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eA certificate for that batch, not a sample PDF.\u003c\/strong\u003e For iMuscle we show one only where the manufacturer supplies it for the batch we hold.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eA stated strength.\u003c\/strong\u003e Each pot's label states it and the bundle listing does not; a figure for the pair is pending confirmation of the pots we hold.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eNo usage directions or result claims.\u003c\/strong\u003e A listing that offers them is not selling for research.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePlain, tracked delivery and a returns route.\u003c\/strong\u003e Every UK order ships free and tracked in plain packaging; orders placed before 2pm Monday to Friday are processed the same working day; EU delivery takes 3-7 working days; unopened items can be returned within 30 days. Details are on the \u003ca href=\"\/en-ro\/pages\/shipping\"\u003eshipping\u003c\/a\u003e and \u003ca href=\"\/en-ro\/pages\/guarantee\"\u003eguarantee\u003c\/a\u003e pages.\u003c\/li\u003e\n\u003c\/ol\u003e\u003cp\u003eReviews describe delivery and service; only a laboratory analysis of the lot can confirm what a capsule contains. A longer checklist sits in \u003ca href=\"\/en-ro\/blogs\/news\/how-to-choose-a-sarms-supplier-uk-checklist\"\u003ehow to choose a SARMs supplier in the UK\u003c\/a\u003e, and the other brands on this marketplace are introduced on the \u003ca href=\"\/en-ro\/pages\/muscle-market\"\u003eMuscle Market\u003c\/a\u003e page.\u003c\/p\u003e\u003ch2\u003eCapsules compared with other forms\u003c\/h2\u003e\u003cp\u003eSearches for \"ostarine liquid UK\", \"ostarine tablets UK\" and \"ostarine capsules UK\" show that buyers meet the same molecule in several formats. The format does not alter the chemistry; it alters how the amount in each unit is fixed and how easily a certificate can speak to it.\u003c\/p\u003e\u003ctable\u003e\n\u003cthead\u003e\u003ctr\u003e\n\u003cth\u003eFormat\u003c\/th\u003e\n\u003cth\u003eWhere the amount is set\u003c\/th\u003e\n\u003cth\u003eWhat can drift\u003c\/th\u003e\n\u003c\/tr\u003e\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003eCapsule\u003c\/td\u003e\n\u003ctd\u003eAt the factory, when powder is filled into shells\u003c\/td\u003e\n\u003ctd\u003eFill weight between capsules; a pooled assay reports the average\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eTablet\u003c\/td\u003e\n\u003ctd\u003eAt the factory, when powder is blended with excipients and pressed\u003c\/td\u003e\n\u003ctd\u003eBlend uniformity; excipients add peaks to be explained on a chromatogram\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eLiquid\u003c\/td\u003e\n\u003ctd\u003eBy the concentration written on the bottle\u003c\/td\u003e\n\u003ctd\u003eMeasuring accuracy of each portion, evaporation after opening, settling in the cold\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eLoose powder\u003c\/td\u003e\n\u003ctd\u003eBy whoever weighs it\u003c\/td\u003e\n\u003ctd\u003eBalance accuracy and static cling at small masses\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\u003cp\u003eBoth compounds here are small synthetic molecules, not peptides: ostarine has a molecular weight of 389.3 and cardarine 453.5. The digestive breakdown that limits swallowed peptides, covered in \u003ca href=\"\/en-ro\/blogs\/news\/do-oral-peptides-work\"\u003edo oral peptides work\u003c\/a\u003e, is therefore not the relevant issue for either. We know of no study comparing retail formats of either compound. A capsule with a declared strength is simply the easiest format to check, and this bundle lacks that declaration.\u003c\/p\u003e\u003ch2\u003eOstarine compared with MK-677\u003c\/h2\u003e\u003cp\u003e\"MK 2866 vs MK 677\" is one of the most common comparison searches for ostarine, largely because the two codes look alike. The shared \"MK\" prefix is a development code and says nothing about how the molecules act. They sit in different drug classes, bind different receptors and fall under different sections of the WADA list.\u003c\/p\u003e\u003ctable\u003e\n\u003cthead\u003e\u003ctr\u003e\n\u003cth\u003eFeature\u003c\/th\u003e\n\u003cth\u003eOstarine (in this bundle)\u003c\/th\u003e\n\u003cth\u003eMK-677\u003c\/th\u003e\n\u003c\/tr\u003e\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003eOther names\u003c\/td\u003e\n\u003ctd\u003eMK-2866, enobosarm, GTx-024\u003c\/td\u003e\n\u003ctd\u003eIbutamoren, L-163,191\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eClass\u003c\/td\u003e\n\u003ctd\u003eSelective androgen receptor modulator\u003c\/td\u003e\n\u003ctd\u003eGrowth hormone secretagogue, a non-peptide ghrelin mimetic\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eTarget\u003c\/td\u003e\n\u003ctd\u003eAndrogen receptor\u003c\/td\u003e\n\u003ctd\u003eGhrelin receptor (growth hormone secretagogue receptor)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eFormula and molecular weight\u003c\/td\u003e\n\u003ctd\u003eC19H14F3N3O3, 389.3\u003c\/td\u003e\n\u003ctd\u003eC27H36N4O5S, 528.7\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMain human evidence\u003c\/td\u003e\n\u003ctd\u003ePhase 2 and Phase 3 trials in older adults and people with cancer-related muscle loss\u003c\/td\u003e\n\u003ctd\u003ePlacebo-controlled trials, including a two-year study in healthy older adults\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eAdverse findings recorded\u003c\/td\u003e\n\u003ctd\u003eLower HDL cholesterol, transient liver enzyme rises\u003c\/td\u003e\n\u003ctd\u003eRaised fasting glucose, reduced insulin sensitivity, increased appetite, mild oedema\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eLicensed as a medicine\u003c\/td\u003e\n\u003ctd\u003eNowhere\u003c\/td\u003e\n\u003ctd\u003eNowhere\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eWADA section\u003c\/td\u003e\n\u003ctd\u003eS1, anabolic agents\u003c\/td\u003e\n\u003ctd\u003eS2, peptide hormones, growth factors, related substances and mimetics\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\u003cp\u003eThe MK-677 row on adverse findings comes from the 2008 trial by Nass and colleagues, in which 65 healthy adults aged 60 to 81 were randomised to MK-677 or placebo. Growth hormone and IGF-1 rose into the young-adult range and fat-free mass increased by 1.1 kg against a 0.5 kg fall on placebo, but fasting glucose rose, insulin sensitivity fell, cortisol increased, and the gain in fat-free mass was not matched by any change in strength or function (Nass et al., 2008). Set that beside the ostarine trial above and the difference is one of route: ostarine acts at the androgen receptor directly, while MK-677 works upstream by prompting the pituitary to release growth hormone. Neither trial compared the two, and we know of no study that has.\u003c\/p\u003e\u003cp\u003eMK-677 brands are listed in the \u003ca href=\"\/en-ro\/collections\/mk-677\"\u003eMK-677 collection\u003c\/a\u003e, its evidence is summarised in \u003ca href=\"\/en-ro\/blogs\/news\/mk-677-ibutamoren-what-the-research-says\"\u003eMK-677 (ibutamoren): what the research says\u003c\/a\u003e, and its UK position is set out on the \u003ca href=\"\/en-ro\/pages\/mk-677-legal-status-uk\"\u003eMK-677 legal status\u003c\/a\u003e page. Cardarine, the other half of this bundle, is often mentioned alongside SR9009, which acts on a different receptor family altogether; see the \u003ca href=\"\/en-ro\/collections\/sr9009\"\u003eSR9009 collection\u003c\/a\u003e and the \u003ca href=\"\/en-ro\/blogs\/news\/sr9009-stenabolic-research-guide\"\u003eSR9009 research guide\u003c\/a\u003e.\u003c\/p\u003e\u003ch2\u003eReading the certificate of analysis for this product\u003c\/h2\u003e\u003cp\u003eiMuscle is a third-party brand, so any certificate of analysis is the manufacturer's. We show one only where iMuscle supplies it for the batch we hold. A bundle may draw on a separate batch per compound, so expect one certificate per compound and ask for each by name. A generic PDF with no batch number is not a batch certificate. Free Muscle-brand batches are assayed by Janoshik Analytical, an independent laboratory, with the certificate sent on request by email; that programme does not cover iMuscle. Our approach is set out on the \u003ca href=\"\/en-ro\/pages\/lab-tests\"\u003elab tests\u003c\/a\u003e page.\u003c\/p\u003e\u003cp\u003eWork through each certificate in this order:\u003c\/p\u003e\u003col\u003e\n\u003cli\u003e\n\u003cstrong\u003eMatch the lot.\u003c\/strong\u003e The batch number on the certificate must be the one printed on the pot in front of you. If they differ, the document describes other capsules.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCheck the identity method.\u003c\/strong\u003e HPLC compared against a reference standard, or LC-MS giving a mass consistent with the formula. For ostarine that is C19H14F3N3O3 (CAS 841205-47-8); for cardarine C21H18F3NO3S2 (CAS 317318-70-0). Ostarine has one stereocentre and the active form is (2S), which a mass alone cannot distinguish from its mirror image; cardarine has no stereocentre.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eTreat purity as purity.\u003c\/strong\u003e A figure such as 99% describes how clean the detected material is, measured by peak area on a chromatogram. It is silent on how many milligrams sit in each capsule.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eLook for a content figure.\u003c\/strong\u003e A measured amount per capsule is the field that would matter most here, because there is no label strength to check it against.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWho tested it, and when.\u003c\/strong\u003e An unnamed laboratory cannot be asked to confirm a report, and an old test date says nothing about storage since.\u003c\/li\u003e\n\u003c\/ol\u003e\u003cp\u003eWhere a field is absent, the certificate has simply not answered that question. Send the product name and both batch numbers through our \u003ca href=\"\/en-ro\/pages\/contact\"\u003econtact page\u003c\/a\u003e and we will say what paperwork iMuscle has provided. Further detail is in \u003ca href=\"\/en-ro\/blogs\/news\/how-to-read-a-certificate-of-analysis\"\u003ehow to read a certificate of analysis\u003c\/a\u003e.\u003c\/p\u003e\u003ch2\u003eDetection, sport and testing\u003c\/h2\u003e\u003cp\u003eBoth compounds are prohibited in and out of competition. Ostarine is listed in section S1 of the WADA Prohibited List as an anabolic agent and cardarine in section S4 among hormone and metabolic modulators. Anti-doping rules work on strict liability: a prohibited substance in a sample is the athlete's responsibility, whatever route it took, including a contaminated or mislabelled product.\u003c\/p\u003e\u003cp\u003eFor ostarine, sensitivity is well documented. Researchers at the German Sport University Cologne gave volunteers single and repeated oral amounts of 1, 10 and 50 micrograms, chosen to model supplement contamination rather than deliberate use, and analysed urine by LC-MS\/MS (Walpurgis et al., 2020). A single 1 microgram amount could still be found for up to nine days when ostarine was targeted, and up to five days for its glucuronide. Detection times lengthened as the amount rose, and varied widely between people.\u003c\/p\u003e\u003cp\u003eNo verified study we can cite gives a window after milligram amounts of ostarine, or any urinary window for cardarine after capsules of unstated strength. For both compounds in this bundle the accurate statement is: detectable, window not established. Anyone subject to an anti-doping code should regard any contact with either as a risk of an adverse finding.\u003c\/p\u003e\u003ch2\u003eStorage, stability and handling\u003c\/h2\u003e\u003cp\u003eNo published shelf-life study of ostarine or cardarine capsules is available to cite, so we quote no shelf life and rely on the expiry date iMuscle prints on each pot.\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eOne compound, one pot.\u003c\/strong\u003e Keep cardarine and ostarine in their own original containers. Capsules from a bundle can look alike, and once decanted or mixed they cannot be traced back to a batch number or a certificate.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eTemperature and light.\u003c\/strong\u003e A cool cupboard away from heaters, ovens and direct sunlight.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMoisture.\u003c\/strong\u003e Replace the lid straight after opening and leave any desiccant sachet in place. Gelatin and plant-based shells absorb water, which can soften them and let the contents clump.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePaper trail.\u003c\/strong\u003e Keep a simple log for each pot: compound, batch number, date received, date opened. Any portion set aside for testing gets the same three details on its own label.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eLaboratory practice.\u003c\/strong\u003e Wear gloves for opened capsules, keep food and drink away from the work area, store out of reach of children and pets, and dispose of unwanted material as chemical waste under local rules, not in household bins or drains.\u003c\/li\u003e\n\u003c\/ul\u003e\u003cp\u003eThe 30-day return option applies only while a pot is still sealed, so check the batch details against any certificate before opening.\u003c\/p\u003e\u003ch2\u003eGlossary\u003c\/h2\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eSARM\u003c\/strong\u003e: short for selective androgen receptor modulator. The label fits ostarine in this bundle but not cardarine, which does not act at the androgen receptor.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePPAR-delta\u003c\/strong\u003e: one of three peroxisome proliferator-activated receptors inside the cell nucleus; cardarine was designed to activate this subtype selectively.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eGhrelin mimetic\u003c\/strong\u003e: a compound that copies the action of the hormone ghrelin at its receptor, as MK-677 does.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCarcinogenicity study\u003c\/strong\u003e: a regulatory toxicology test in which animals receive a substance for most of their lifespan and are examined for tumours; the cardarine findings came from studies of this kind.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eHDL cholesterol\u003c\/strong\u003e: the lipoprotein fraction that rose in the cardarine lipid trial and fell in the ostarine Phase 2 trial.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eGlucuronide\u003c\/strong\u003e: a form of a compound the body links to glucuronic acid for excretion, often a target in urine testing.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eStrict liability\u003c\/strong\u003e: under anti-doping codes, a positive sample is an offence in itself; intent and source affect only the sanction.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eEnantiomer\u003c\/strong\u003e: either of two mirror-image versions of a molecule with one stereocentre. Ostarine has two; cardarine has no mirror-image form.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eChromatogram\u003c\/strong\u003e: the trace an HPLC run produces; each peak is a separated substance, and the main peak's share of the total area gives the purity figure.\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch2\u003eAbout the iMuscle Cardarine and Ostarine stack\u003c\/h2\u003e\u003cp\u003eThis pairing is shown as two iMuscle pots: a green one labelled CARDARINE and a yellow one labelled OSTABOLON, iMuscle's trade name for ostarine MK-2866. Each pot's front box prints a capsule count and a strength, and the singles carry labels of 60 capsules, 10 mg (\u003ca href=\"\/en-ro\/products\/imuscle-cardarine-gw501516-60-10mg\"\u003eiMuscle Cardarine\u003c\/a\u003e) and 60 capsules, 15 mg (\u003ca href=\"\/en-ro\/products\/imuscle-ostarine-k2866-60-15mg\"\u003eiMuscle Ostabolon\u003c\/a\u003e). Before ordering, ask us to verify that the pots we hold match these photographs; until then this page carries no combined figure.\u003c\/p\u003e\u003cp\u003eiMuscle sells the same two compounds together on its own website as Cardarine, Ostarine MK2866. The brand describes itself as an international SARMs shop and trades through country websites in several European countries; no page of its that we read names a UK stockist, and Free Muscle makes no claim to be one. Its other products, from the nine singles to the remaining stacks, are on our \u003ca href=\"\/en-ro\/collections\/brand-imuscle\"\u003eiMuscle page\u003c\/a\u003e.\u003c\/p\u003e\u003cp\u003eOstarine (enobosarm) is the SARM that went furthest in clinical trials without approval, while cardarine is a PPAR-delta agonist whose development was dropped after rodent studies found cancers. Both lack a UK licence; WADA lists ostarine under S1 and cardarine under S4. See the \u003ca href=\"\/en-ro\/collections\/ostarine\"\u003eostarine\u003c\/a\u003e and \u003ca href=\"\/en-ro\/collections\/cardarine\"\u003ecardarine\u003c\/a\u003e collections for every brand of each.\u003c\/p\u003e\u003cp\u003eNo document is shown for this stack, and the 2021 protocol on the single ostarine listing has no lot number. Read the lot code on both pots and \u003ca href=\"\/en-ro\/pages\/contact\"\u003esend them to us\u003c\/a\u003e; we will share anything iMuscle provides for those lots. Free Muscle's Janoshik programme does not extend to iMuscle.\u003c\/p\u003e\u003ch2\u003eRelated\u003c\/h2\u003e\u003cul\u003e\n\u003cli\u003e\u003ca href=\"\/en-ro\/collections\/cardarine\"\u003eCardarine (GW-501516), all brands\u003c\/a\u003e\u003c\/li\u003e\n\u003cli\u003e\u003ca href=\"\/en-ro\/collections\/ostarine\"\u003eOstarine (MK-2866), all brands\u003c\/a\u003e\u003c\/li\u003e\n\u003cli\u003e\n\u003ca href=\"\/en-ro\/collections\/mk-677\"\u003eMK-677, all brands\u003c\/a\u003e and \u003ca href=\"\/en-ro\/collections\/sarms\"\u003eall SARMs\u003c\/a\u003e\n\u003c\/li\u003e\n\u003cli\u003e\u003ca href=\"\/en-ro\/collections\/brand-imuscle\"\u003eiMuscle brand collection\u003c\/a\u003e\u003c\/li\u003e\n\u003cli\u003e\u003ca href=\"\/en-ro\/collections\/market-bundles\"\u003eAll bundles\u003c\/a\u003e\u003c\/li\u003e\n\u003cli\u003e\u003ca href=\"\/en-ro\/pages\/faq\"\u003eFrequently asked questions\u003c\/a\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\u003cp\u003e\u003cem\u003eResearch compounds sold by Free Muscle are supplied for laboratory research use only and are not for human consumption. They are not authorised as medicines by the MHRA, EMA or FDA, are not food supplements, and are sold only to adults aged 18 or over. Nothing on this page is medical or dosing advice. Summaries of published research describe study findings and are not claims about any product.\u003c\/em\u003e\u003c\/p\u003e\u003ch2\u003eReferences\u003c\/h2\u003e\u003col\u003e\n\u003cli\u003eOlson EJ, et al. Lipid effects of peroxisome proliferator-activated receptor-delta agonist GW501516 in subjects with low high-density lipoprotein cholesterol: characteristics of metabolic syndrome. Arterioscler Thromb Vasc Biol. 2012;32(9):2289-94. \u003ca href=\"https:\/\/pubmed.ncbi.nlm.nih.gov\/22814748\/\" rel=\"noopener\"\u003ePMID: 22814748\u003c\/a\u003e.\u003c\/li\u003e\n\u003cli\u003eDalton JT, et al. The selective androgen receptor modulator GTx-024 (enobosarm) improves lean body mass and physical function in healthy elderly men and postmenopausal women: results of a double-blind, placebo-controlled phase II trial. J Cachexia Sarcopenia Muscle. 2011;2(3):153-161. \u003ca href=\"https:\/\/pubmed.ncbi.nlm.nih.gov\/22031847\/\" rel=\"noopener\"\u003ePMID: 22031847\u003c\/a\u003e.\u003c\/li\u003e\n\u003cli\u003eNass R, et al. Effects of an oral ghrelin mimetic on body composition and clinical outcomes in healthy older adults: a randomized trial. Ann Intern Med. 2008;149(9):601-11. \u003ca href=\"https:\/\/pubmed.ncbi.nlm.nih.gov\/18981485\/\" rel=\"noopener\"\u003ePMID: 18981485\u003c\/a\u003e.\u003c\/li\u003e\n\u003cli\u003eWalpurgis K, et al. Elimination profiles of microdosed ostarine mimicking contaminated products ingestion. Drug Test Anal. 2020;12(11-12):1570-1580. \u003ca href=\"https:\/\/pubmed.ncbi.nlm.nih.gov\/32959982\/\" rel=\"noopener\"\u003ePMID: 32959982\u003c\/a\u003e.\u003c\/li\u003e\n\u003c\/ol\u003e","brand":"iMuscle","offers":[{"title":"Default Title","offer_id":48468979056866,"sku":null,"price":68.99,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0772\/3499\/5426\/files\/Combo1_eea04d8f-0b97-4e11-94ad-6c34c7f253ae.jpg?v=1789931403"},{"product_id":"imuscle-cardarine-testolon-rad140","title":"iMuscle Cardarine + Testolone RAD-140 stack","description":"\u003cp\u003eThe iMuscle Cardarine and Testolone bundle pairs two research compounds from iMuscle in one listing: cardarine (GW-501516, endurobol), a PPAR-delta agonist, and testolone (RAD-140, vosilasarm), a selective androgen receptor modulator. The photographs show an iMuscle pot for each of the two, every label printing its own count and strength; a figure for the pair is withheld until the make-up of the stock in hand is confirmed. Supplied to adults aged 18 and over for laboratory research only, and not for human consumption.\u003c\/p\u003e\u003cp\u003eA bundle is a listing convenience only: it groups two compounds from one manufacturer under a single product listing. Nothing on this page claims that they act together or should be studied together, and Free Muscle publishes no stack or cycle guidance for any product. Each section below therefore treats cardarine first and RAD-140 second, as two unrelated substances that simply share a listing.\u003c\/p\u003e\u003ch2\u003eAbout the compounds in this bundle\u003c\/h2\u003e\u003ch3\u003eCardarine (GW-501516)\u003c\/h3\u003e\u003cp\u003eCardarine is not a SARM but an agonist at the PPAR-delta nuclear receptor, which regulates genes for fatty-acid oxidation. GlaxoSmithKline developed it with Ligand as a candidate for lipid disorders. The first published study in people was a two-week 2007 trial in healthy volunteers kept in hospital and sedentary: HDL cholesterol was higher than with placebo, fasting triglycerides trended downwards without reaching statistical significance, and fat from a test meal was cleared faster (Sprecher et al., 2007). With 6 people on placebo and 18 on the compound, it could say nothing about long-term tolerability. Development was then discontinued after long-term rodent toxicology studies found tumours in several organs, a sponsor-reported finding that ended further human work. Cardarine has never been approved as a medicine. Compare brands on the \u003ca href=\"\/en-ro\/collections\/cardarine\"\u003eCardarine (GW-501516) collection page\u003c\/a\u003e.\u003c\/p\u003e\u003ch3\u003eTestolone (RAD-140)\u003c\/h3\u003e\u003cp\u003eTestolone (RAD-140) is a non-steroidal SARM designed by Radius Health and described in 2011 as potent and orally bioavailable, with its early characterisation carried out in rats and non-human primates (Miller et al., 2011). Human data are limited to a small early oncology study: 22 postmenopausal women with advanced ER-positive, HER2-negative breast cancer (LoRusso et al., 2022). Raised liver enzymes were the most frequent adverse events, AST in 59.1% of patients and ALT in 45.5%, alongside raised bilirubin, vomiting, dehydration and weight loss, and 16 of the 22 had at least one grade 3 or 4 event. The measured half-life was 44.7 hours. Published case reports describe drug-induced liver injury in adults who had taken products labelled as containing RAD-140; in one, a 52-year-old man's liver enzymes took about three months to return to normal (Barbara et al., 2020). It remains investigational and has never been approved as a medicine. Compare brands on the \u003ca href=\"\/en-ro\/collections\/rad-140\"\u003eTestolone (RAD-140) collection page\u003c\/a\u003e.\u003c\/p\u003e\u003cp\u003eThese findings describe study participants and animals under trial conditions. None of them is a claim about the capsules in this bundle.\u003c\/p\u003e\u003ch2\u003eThis listing\u003c\/h2\u003e\u003cul\u003e\n\u003cli\u003eBrand: iMuscle (third-party brand, Muscle Market)\u003c\/li\u003e\n\u003cli\u003eCompounds: cardarine (GW-501516), testolone (RAD-140)\u003c\/li\u003e\n\u003cli\u003eForm and pack: capsules; the photographs show a pot of each compound, both marked 60 capsules, and we will confirm the stock in hand on request\u003c\/li\u003e\n\u003cli\u003eStrength: 10 mg per capsule on each pot's label as sold singly; nothing further is stated for the pair\u003c\/li\u003e\n\u003cli\u003eCOA: only where iMuscle supplies one for the batch held\u003c\/li\u003e\n\u003cli\u003eTerms: laboratory research only, adults aged 18 and over\u003c\/li\u003e\n\u003c\/ul\u003e\u003cp\u003eWith the stock in hand still to be checked, the usual comparison of total milligrams per pack, and of cost per milligram, is not made for this bundle. The method, for listings that do state a strength, is in \u003ca href=\"\/en-ro\/blogs\/news\/price-per-mg-compare-sarms-peptides\"\u003eprice per milligram\u003c\/a\u003e.\u003c\/p\u003e\u003ch2\u003eCardarine and RAD-140 in the UK: buying, legal status and what to check\u003c\/h2\u003e\u003cp\u003eBehind \"cardarine UK legal\", \"cardarine UK buy\" and \"testolone RAD 140 UK\" sit two questions: is the sale lawful, and how can a credible seller be told from a doubtful one.\u003c\/p\u003e\u003ch3\u003eThe legal position\u003c\/h3\u003e\u003cp\u003eNone of the compounds on this page is a licensed medicine in the United Kingdom, none has been assessed by the MHRA and none is an authorised food supplement. Cardarine and RAD-140 are not controlled substances in the UK, so they can be supplied to adults for laboratory research, which is the only basis on which Free Muscle sells them. The position in sport is stricter: RAD-140 falls under WADA section S1 (anabolic agents) and cardarine under S4 (hormone and metabolic modulators), and both are banned at all times, in and out of competition. Background: our \u003ca href=\"\/en-ro\/blogs\/news\/what-are-sarms-the-2026-research-guide\"\u003eSARMs research guide\u003c\/a\u003e.\u003c\/p\u003e\u003ch3\u003eWhat a credible UK listing shows, and where this one stands\u003c\/h3\u003e\u003ctable\u003e\n\u003cthead\u003e\u003ctr\u003e\n\u003cth\u003eCheck\u003c\/th\u003e\n\u003cth\u003eWhy it matters\u003c\/th\u003e\n\u003cth\u003eThis listing\u003c\/th\u003e\n\u003c\/tr\u003e\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003eNamed manufacturer and UK seller\u003c\/td\u003e\n\u003ctd\u003eSomeone accountable for what is in the pack and for the sale\u003c\/td\u003e\n\u003ctd\u003eMade by iMuscle; sold by FreeMuscle, a business registered in Andorra, and posted from Scunthorpe\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eStated strength for each compound\u003c\/td\u003e\n\u003ctd\u003eWithout it, a certificate has no label figure to test\u003c\/td\u003e\n\u003ctd\u003eCarried by each pot's label; a figure for the pair waits on confirmation of the stock in hand\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eCertificate tied to a batch number\u003c\/td\u003e\n\u003ctd\u003eOnly a batch-specific result says anything about the pack you receive\u003c\/td\u003e\n\u003ctd\u003eShown only where iMuscle supplies one for the batch we hold\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eResearch-only wording\u003c\/td\u003e\n\u003ctd\u003eA seller giving amounts or promising outcomes is marketing a product for people to take\u003c\/td\u003e\n\u003ctd\u003eNo amounts, schedules or outcome claims; 18 and over only\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eDiscreet, traceable delivery\u003c\/td\u003e\n\u003ctd\u003eA tracked parcel can be followed and a plain one draws no attention\u003c\/td\u003e\n\u003ctd\u003eSent free by tracked UK post in unmarked packaging; weekday orders placed by 2pm processed that day; 3-7 working days to the EU\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eA returns route\u003c\/td\u003e\n\u003ctd\u003eShows the seller stands behind the order\u003c\/td\u003e\n\u003ctd\u003eUnopened items within 30 days, under our \u003ca href=\"\/en-ro\/pages\/shipping\"\u003edelivery\u003c\/a\u003e and \u003ca href=\"\/en-ro\/pages\/guarantee\"\u003eguarantee\u003c\/a\u003e terms\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\u003cp\u003eReviews and \"cardarine UK reviews\" threads tell you how a parcel arrived, not what the capsules hold. A fuller supplier checklist is in \u003ca href=\"\/en-ro\/blogs\/news\/how-to-choose-a-sarms-supplier-uk-checklist\"\u003ehow to choose a SARMs supplier in the UK\u003c\/a\u003e.\u003c\/p\u003e\u003ch2\u003eCapsules compared with other forms\u003c\/h2\u003e\u003cp\u003eBoth molecules are also sold as liquids, loose powder and occasionally injectables. The chemical is the same; what differs is how the quantity per unit is fixed and how well it holds.\u003c\/p\u003e\u003cp\u003eIn a capsule the amount is decided once, when powder is blended and filled into shells, so the figure can be checked by assaying a sample of capsules. The weak point is mixing: an assay reports an average, so a poorly blended batch can vary between shells. A liquid is sold as a concentration, so every measured portion depends on the accuracy of the volume drawn, and a solution that is opened repeatedly can lose solvent and become more concentrated, while a compound near its solubility limit can settle out in the cold. Powder has no preset portion; accuracy rests on the balance. As for injectable versions, both human studies cited here gave the compounds by mouth, and we know of no published injection study.\u003c\/p\u003e\u003cp\u003eNeither compound is a peptide. At molecular weights of 453.5 (cardarine) and 393.8 (RAD-140) they are small synthetic molecules, so the debate over whether stomach enzymes break down swallowed peptides, covered in \u003ca href=\"\/en-ro\/blogs\/news\/do-oral-peptides-work\"\u003edo oral peptides work\u003c\/a\u003e, does not apply to them in the same way. For this particular bundle, the main advantage of capsules, a printed figure per capsule that a laboratory can confirm, appears on each pot's label and nowhere on the bundle listing.\u003c\/p\u003e\u003ch2\u003eEach compound compared with its most-searched counterpart\u003c\/h2\u003e\u003cp\u003eSearchers pair each compound here with a different neighbour, \"stenabolic vs cardarine\" and \"RAD 140 vs RAD 150\", so the pairings are taken in turn.\u003c\/p\u003e\u003ch3\u003eCardarine compared with SR9009 (stenabolic)\u003c\/h3\u003e\u003cp\u003eThey are often shelved together, but share neither receptor nor chemical family. Cardarine binds PPAR-delta; SR9009 (C20H24ClN3O4S, CAS 1379686-30-2) binds REV-ERB alpha and beta, nuclear receptors that form part of the body clock. Cardarine went through industry clinical trials for lipid disorders before its tumour findings in rodents; SR9009 came out of academic research at the Scripps Research Institute and has never been given to people in a published trial. So SR9009 has no human data and no long-term carcinogenicity data, a gap in knowledge rather than a reassurance. Neither is licensed anywhere, and WADA lists both under S4 as metabolic modulators. SR9009 brands are in the \u003ca href=\"\/en-ro\/collections\/sr9009\"\u003eSR9009 (Stenabolic) collection\u003c\/a\u003e, with background in the \u003ca href=\"\/en-ro\/blogs\/news\/sr9009-stenabolic-research-guide\"\u003eSR9009 research guide\u003c\/a\u003e.\u003c\/p\u003e\u003ch3\u003eRAD-140 compared with RAD-150 (TLB-150)\u003c\/h3\u003e\u003cp\u003eRAD-150, also sold as TLB-150, is marketed as an ester of RAD-140: the same core molecule with a benzoate group attached. Closely related chemically, they differ sharply in evidence: RAD-140 has a peer-reviewed preclinical paper, a published first-in-human study and anti-doping research. RAD-150 has no peer-reviewed journal studies and no published data in people, so any claim that it is longer-lasting, milder or stronger than RAD-140 is untested. Neither has ever been approved as a medicine. RAD-140 is named in WADA section S1; RAD-150 is not named individually, but S1 also covers substances with a similar chemical structure or biological effect, so it is prohibited in sport as well. RAD-150 brands are in the \u003ca href=\"\/en-ro\/collections\/rad-150\"\u003eRAD-150 (TLB-150) collection\u003c\/a\u003e, with more in \u003ca href=\"\/en-ro\/blogs\/news\/rad-140-vs-rad-150-tlb-150\"\u003eRAD-140 vs RAD-150 (TLB-150)\u003c\/a\u003e.\u003c\/p\u003e\u003ch2\u003eReading the certificate of analysis for this product\u003c\/h2\u003e\u003cp\u003eiMuscle is a third-party brand sold through Muscle Market. For third-party brands we display a certificate of analysis only where the manufacturer supplies one for the exact batch we hold; if none is shown, none has been supplied and we do not substitute a generic document. Free Muscle-brand products, by contrast, are assayed batch by batch at Janoshik Analytical, with the certificate sent on request by email; that programme does not extend to iMuscle. Our \u003ca href=\"\/en-ro\/pages\/lab-tests\"\u003elab testing page\u003c\/a\u003e explains what a certificate shows.\u003c\/p\u003e\u003cp\u003eTwo compounds need two identity results. Read each certificate field by field:\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eCompound name and CAS number.\u003c\/strong\u003e Cardarine is CAS 317318-70-0 and RAD-140 is CAS 1182367-47-0.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eIdentity test.\u003c\/strong\u003e HPLC matches the sample against a reference standard by retention time; LC-MS also measures mass, which should correspond to 453.5 for cardarine (C21H18F3NO3S2) and 393.8 for RAD-140 (C20H16ClN5O2).\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eStereochemistry, for RAD-140.\u003c\/strong\u003e RAD-140 has two stereocentres, written (1R,2S) in its systematic name, so other isomers share its formula and mass. A mass match alone does not show the correct isomer. Cardarine has no stereocentre, so the question does not arise.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePurity.\u003c\/strong\u003e A percentage, usually from chromatogram peak areas, of how much detected material is the named compound; other peaks are impurities. It is not a content per capsule.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMeasured content.\u003c\/strong\u003e Each pot's label prints its own strength, so a milligram figure on a certificate should be read against the pot whose lot it names.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eLot code, date and issuer.\u003c\/strong\u003e Match the lot code to the one on your container, see how long ago the analysis was run, and note who ran it, since a named laboratory can be asked about its own report.\u003c\/li\u003e\n\u003c\/ul\u003e\u003cp\u003eTreat a blank field as an open question rather than a pass, and \u003ca href=\"\/en-ro\/pages\/contact\"\u003eget in touch\u003c\/a\u003e quoting the lot codes printed on the pack to learn what paperwork iMuscle has provided. See \u003ca href=\"\/en-ro\/blogs\/news\/how-to-read-a-certificate-of-analysis\"\u003ehow to read a COA\u003c\/a\u003e.\u003c\/p\u003e\u003ch2\u003eDetection, sport and testing\u003c\/h2\u003e\u003cp\u003eFor anyone under anti-doping rules, both compounds are prohibited at all times. Under strict liability, a mislabelled or contaminated product is no defence.\u003c\/p\u003e\u003cp\u003eCardarine was added to the WADA list in January 2009, first classed as gene doping. The Cologne anti-doping laboratory then used human liver microsomes to reproduce its breakdown, synthesised the two main urinary metabolites, a sulfoxide and a sulfone, and validated a routine urine screening method able to detect 0.1 ng\/ml (Thevis et al., 2010). Testing therefore targets what the body makes from cardarine, not only the parent compound.\u003c\/p\u003e\u003cp\u003eRAD-140 is named in section S1, and anti-doping laboratories screen urine for SARMs. Its half-life in the 2022 cancer study was 44.7 hours, but a half-life describes how blood levels fall, not how long a laboratory can find traces in urine. We know of no verified study giving a detection window after capsule quantities of either compound, so for both the accurate statement is: detectable, window not established.\u003c\/p\u003e\u003ch2\u003eStorage, stability and handling\u003c\/h2\u003e\u003cp\u003eWe are not aware of any published shelf-life study for cardarine or RAD-140 capsules, so no shelf life is quoted here. Treat the expiry date printed by iMuscle as the limit, and remember that a certificate describes the batch only as it stood on the day it was tested.\u003c\/p\u003e\u003cp\u003eBoth are solids held in capsule shells, and the main threats to them are moisture, heat and light. Humid air softens gelatin and lets the powder inside clump, so store the containers tightly closed in a cool, dark cupboard, well away from radiators, cookers, bathrooms and sunny windowsills. Keep capsules in their original labelled containers: loose capsules of similar appearance cannot be told apart afterwards, and once separated from the label they can no longer be linked to a batch number or certificate.\u003c\/p\u003e\u003cp\u003eLog each batch number with the date its seal was first broken. Handle opened capsules with gloves, away from food and drink, keep everything out of reach of children and pets, and dispose of unwanted material as chemical waste under local rules, never in household bins or drains. Opening a container also ends the 30-day return option, which covers unopened items only.\u003c\/p\u003e\u003ch2\u003eGlossary\u003c\/h2\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003ePPAR-delta\u003c\/strong\u003e: a nuclear receptor, full name peroxisome proliferator-activated receptor delta, switched on by cardarine.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSARM\u003c\/strong\u003e: a non-steroidal molecule built to act on the androgen receptor, such as RAD-140; cardarine belongs to a different class.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eREV-ERB alpha and beta\u003c\/strong\u003e: clock-linked nuclear receptors bound by SR9009, unrelated to PPAR-delta.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eEster\u003c\/strong\u003e: a molecule made by joining an acid to an alcohol; RAD-150 is sold as RAD-140 joined to benzoic acid.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eER-positive, HER2-negative\u003c\/strong\u003e: a breast cancer type defined by oestrogen receptor presence and absence of HER2 protein excess, the population in the RAD-140 trial.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eAST and ALT\u003c\/strong\u003e: enzymes released from liver cells; blood levels above normal point to liver injury or stress.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCarcinogenicity study\u003c\/strong\u003e: lifelong animal exposure to a substance, run to see whether tumour rates rise.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSulfoxide and sulfone\u003c\/strong\u003e: oxidised forms of cardarine made in the body and used as targets in doping tests.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eRetention time\u003c\/strong\u003e: the moment a substance emerges from a chromatography column; a sample emerging alongside its reference standard supports its identity.\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch2\u003eAbout the iMuscle Cardarine and Testolon stack\u003c\/h2\u003e\u003cp\u003eTwo pots appear in the photographs: iMuscle's green CARDARINE, with GW 501516 beneath, and its blue TESTOLON, with RAD 140 beneath. Both carry the iMUSCLE logo on a black panel and a box printing their own count and strength; sold singly, each is labelled 60 capsules at 10 mg (\u003ca href=\"\/en-ro\/products\/imuscle-cardarine-gw501516-60-10mg\"\u003eCardarine\u003c\/a\u003e, \u003ca href=\"\/en-ro\/products\/imuscle-testolon-rad-140-60-10mg\"\u003eTestolon RAD-140\u003c\/a\u003e). If those figures matter, have us confirm what the stock in hand consists of before you order.\u003c\/p\u003e\u003cp\u003eOn its Romanian shop iMuscle offers the pair as Cardarine, Testolon RAD140, one of eight two- and three-compound stacks. Its combined series is a separate product type, with several compounds in each capsule, and is not stocked by Free Muscle. Every iMuscle listing we carry is on the \u003ca href=\"\/en-ro\/collections\/brand-imuscle\"\u003eiMuscle brand page\u003c\/a\u003e.\u003c\/p\u003e\u003cp\u003eRAD-140 comes from Radius Health, a non-steroidal SARM with a single small human trial in women with breast cancer; cardarine, a PPAR-delta agonist, left development after rodent carcinogenicity findings. Neither has a UK licence, and WADA lists them in different sections, S1 for RAD-140 and S4 for cardarine. Compare brands on the \u003ca href=\"\/en-ro\/collections\/rad-140\"\u003eRAD-140\u003c\/a\u003e and \u003ca href=\"\/en-ro\/collections\/cardarine\"\u003ecardarine\u003c\/a\u003e collection pages.\u003c\/p\u003e\u003cp\u003eThe gallery shows no test document. The single Testolon listing carries a 2021 protocol and print-out (lot 20210908) and the single Cardarine listing none, so neither covers the pots in stock now. Note each pot's lot code and \u003ca href=\"\/en-ro\/pages\/contact\"\u003econtact us\u003c\/a\u003e with both; certificates from Janoshik Analytical cover Free Muscle-brand batches only.\u003c\/p\u003e\u003ch2\u003eRelated\u003c\/h2\u003e\u003cul\u003e\n\u003cli\u003e\u003ca href=\"\/en-ro\/collections\/cardarine\"\u003eCardarine (GW-501516) collection\u003c\/a\u003e\u003c\/li\u003e\n\u003cli\u003e\u003ca href=\"\/en-ro\/collections\/rad-140\"\u003eRAD-140 (Testolone) collection\u003c\/a\u003e\u003c\/li\u003e\n\u003cli\u003e\u003ca href=\"\/en-ro\/collections\/brand-imuscle\"\u003eiMuscle brand page\u003c\/a\u003e\u003c\/li\u003e\n\u003cli\u003e\u003ca href=\"\/en-ro\/collections\/market-bundles\"\u003eBundles collection\u003c\/a\u003e\u003c\/li\u003e\n\u003cli\u003e\u003ca href=\"\/en-ro\/blogs\/news\/cardarine-gw-501516-what-happened-in-development\"\u003eCardarine (GW-501516): what happened in development\u003c\/a\u003e\u003c\/li\u003e\n\u003cli\u003e\u003ca href=\"\/en-ro\/blogs\/news\/rad-140-testolone-what-the-research-says\"\u003eRAD-140 (testolone): what the research says\u003c\/a\u003e\u003c\/li\u003e\n\u003cli\u003e\u003ca href=\"\/en-ro\/blogs\/news\/what-are-sarms-the-2026-research-guide\"\u003eWhat are SARMs? The 2026 research guide\u003c\/a\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\u003cp\u003e\u003cem\u003eResearch compounds sold by Free Muscle are supplied for laboratory research use only and are not for human consumption. They are not authorised as medicines by the MHRA, EMA or FDA, are not food supplements, and are sold only to adults aged 18 or over. Nothing on this page is medical or dosing advice. Summaries of published research describe study findings and are not claims about any product.\u003c\/em\u003e\u003c\/p\u003e\u003ch2\u003eReferences\u003c\/h2\u003e\u003col\u003e\n\u003cli\u003eSprecher DL, et al. Triglyceride:high-density lipoprotein cholesterol effects in healthy subjects administered a peroxisome proliferator activated receptor delta agonist. Arterioscler Thromb Vasc Biol. 2007;27(2):359-65. \u003ca href=\"https:\/\/pubmed.ncbi.nlm.nih.gov\/17110604\/\" rel=\"noopener\"\u003ePMID: 17110604\u003c\/a\u003e.\u003c\/li\u003e\n\u003cli\u003eMiller CP, et al. Design, Synthesis, and Preclinical Characterization of the Selective Androgen Receptor Modulator (SARM) RAD140. ACS Med Chem Lett. 2011;2(2):124-9. \u003ca href=\"https:\/\/pubmed.ncbi.nlm.nih.gov\/24900290\/\" rel=\"noopener\"\u003ePMID: 24900290\u003c\/a\u003e.\u003c\/li\u003e\n\u003cli\u003eLoRusso P, et al. A First-in-Human Phase 1 Study of a Novel Selective Androgen Receptor Modulator (SARM), RAD140, in ER+\/HER2- Metastatic Breast Cancer. Clin Breast Cancer. 2022;22(1):67-77. \u003ca href=\"https:\/\/pubmed.ncbi.nlm.nih.gov\/34565686\/\" rel=\"noopener\"\u003ePMID: 34565686\u003c\/a\u003e.\u003c\/li\u003e\n\u003cli\u003eThevis M, et al. Characterization of two major urinary metabolites of the PPARdelta-agonist GW1516 and implementation of the drug in routine doping controls. Anal Bioanal Chem. 2010;396(7):2479-91. \u003ca href=\"https:\/\/pubmed.ncbi.nlm.nih.gov\/19946680\/\" rel=\"noopener\"\u003ePMID: 19946680\u003c\/a\u003e.\u003c\/li\u003e\n\u003cli\u003eBarbara M, et al. Drug-Induced Liver Injury Associated With Alpha Bolic (RAD-140) and Alpha Elite (RAD-140 and LGD-4033). ACG Case Rep J. 2020;7(6):e00409. \u003ca href=\"https:\/\/pubmed.ncbi.nlm.nih.gov\/33062783\/\" rel=\"noopener\"\u003ePMID: 33062783\u003c\/a\u003e.\u003c\/li\u003e\n\u003c\/ol\u003e","brand":"iMuscle","offers":[{"title":"Default Title","offer_id":48468979089634,"sku":null,"price":76.99,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0772\/3499\/5426\/files\/Combo10_1c630ed1-3aaf-4e68-872f-dc9700010877.jpg?v=1789931403"},{"product_id":"imuscle-ibutamoren-mk-677-60-10mg","title":"iMuscle Ibutamoren MK-677 — 60 caps, 10mg","description":"\u003cp\u003eiMuscle Ibutamoren MK-677 is supplied as 60 capsules stated at 10 mg each, a total of 600 mg of MK-677 per pack. MK-677, also called ibutamoren, L-163,191 or Nutrobal, is an oral growth hormone secretagogue with a genuine human trial record. iMuscle manufactures the product and Free Muscle stocks it through the \u003ca href=\"\/en-ro\/pages\/muscle-market\"\u003eMuscle Market\u003c\/a\u003e range for laboratory research by adults aged 18 and over.\u003c\/p\u003e\u003ch2\u003eAbout MK-677\u003c\/h2\u003e\u003cp\u003eMK-677, or ibutamoren, is an orally active ghrelin mimetic developed by Merck under the code L-163,191, a synthetic small molecule rather than a peptide. It binds the GHS-R1a receptor in the hypothalamus and pituitary, prompting pulsatile growth hormone release and a sustained rise in IGF-1. PubChem lists the free base as CID 178024, CAS 159634-47-6, formula C27H36N4O5S, molecular weight 528.7.\u003c\/p\u003e\u003ch3\u003eWhat the published research reports\u003c\/h3\u003e\u003cp\u003eThe human literature is real but limited. In 1996 Chapman and colleagues reported that daily oral MK-677 in 32 healthy elderly volunteers, randomised against placebo, increased growth hormone pulse amplitude and raised IGF-1. Sampling every 20 minutes for 24 hours showed higher pulses and higher troughs between them, with no change in the number of pulses. IGF-binding protein 3 and fasting glucose rose; cortisol did not change. The study lasted four weeks at most and measured hormones only.\u003c\/p\u003e\u003cp\u003eSvensson and colleagues then randomised 24 otherwise healthy obese men aged 18 to 50 to MK-677 or placebo for eight weeks (Svensson et al., 1998). IGF-1 rose by about 40 per cent with MK-677, significantly more than with placebo, and fat-free mass increased, while total and visceral fat did not change significantly. Basal metabolic rate was higher at two weeks but not significantly at eight, and an oral glucose tolerance test showed impaired glucose handling at both points although fasting glucose was unchanged.\u003c\/p\u003e\u003cp\u003eThe longest trial followed 65 healthy adults aged 60 to 81 for up to two years, with its main end points at twelve months (Nass et al., 2008). Fat-free mass went up by an average of 1.1 kg on MK-677 and drifted down by 0.5 kg on placebo, but strength, physical function and abdominal visceral fat did not differ, and limb fat grew more. Increased appetite, oedema, muscle pain, reduced insulin sensitivity, a small rise in fasting glucose, higher cortisol and greater weight gain were recorded. The authors judged the study too small and too short to assess function.\u003c\/p\u003e\u003cp\u003eAcross the three trials, higher growth hormone and IGF-1 came with poorer glucose handling, and the one trial that measured strength and function found no change in either. MK-677 was never approved as a medicine. Nothing in these studies is a claim about this listing.\u003c\/p\u003e\u003ch2\u003eThis listing\u003c\/h2\u003e\u003cul\u003e\n\u003cli\u003eCompound: MK-677 (Ibutamoren)\u003c\/li\u003e\n\u003cli\u003eBrand: iMuscle\u003c\/li\u003e\n\u003cli\u003eForm: capsules\u003c\/li\u003e\n\u003cli\u003ePack size: 60 capsules\u003c\/li\u003e\n\u003cli\u003eStated strength: 10 mg per capsule (manufacturer's label claim)\u003c\/li\u003e\n\u003cli\u003eStated total per pack: 600 mg\u003c\/li\u003e\n\u003cli\u003eIntended use: laboratory research only, not for human consumption\u003c\/li\u003e\n\u003cli\u003eSold to adults aged 18 and over\u003c\/li\u003e\n\u003c\/ul\u003e\u003cp\u003eThe strength is the manufacturer's label claim; only a batch certificate confirms it. Because a figure is printed, this pack can be set against other brands of MK-677 on total milligrams, as explained in \u003ca href=\"\/en-ro\/blogs\/news\/price-per-mg-compare-sarms-peptides\"\u003eprice per milligram\u003c\/a\u003e, provided each figure refers to the same form: free base or the heavier mesylate salt.\u003c\/p\u003e\u003ch2\u003eMK-677 in the UK: buying, legal status and what to check\u003c\/h2\u003e\u003cp\u003eUK searches for this compound ask three things: is it legal (\"MK 677 UK legal\"), where can it be bought (\"MK677 UK supplier\", \"MK 677 UK buy\") and can a seller be trusted (\"MK677 UK review\").\u003c\/p\u003e\u003ch3\u003eThe legal position\u003c\/h3\u003e\u003cp\u003eMK-677 is not a licensed medicine in the UK: it has no MHRA marketing authorisation, is not an authorised food supplement, and cannot lawfully be sold for human consumption. It is not a controlled drug either, which is why the question gets contradictory answers online; the restriction concerns what it may be sold as. Free Muscle supplies it to adults aged 18 or over for laboratory research only. It is prohibited at all times under section S2 (peptide hormones, growth factors and related substances) of the WADA Prohibited List. Buyers are responsible for the rules that apply to them, including any anti-doping code. See \u003ca href=\"\/en-ro\/pages\/mk-677-legal-status-uk\"\u003eMK-677 legal status in the UK\u003c\/a\u003e for more detail.\u003c\/p\u003e\u003ch3\u003eWhat a careful UK listing shows, and how this one compares\u003c\/h3\u003e\u003ctable\u003e\n\u003cthead\u003e\u003ctr\u003e\n\u003cth\u003eCheck\u003c\/th\u003e\n\u003cth\u003eWhy it matters\u003c\/th\u003e\n\u003cth\u003eThis listing\u003c\/th\u003e\n\u003c\/tr\u003e\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003eNamed manufacturer and a UK seller\u003c\/td\u003e\n\u003ctd\u003eSomeone is answerable for contents and sale\u003c\/td\u003e\n\u003ctd\u003eMade by iMuscle; sold by FreeMuscle, a business registered in Andorra, and dispatched from Scunthorpe\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eStated strength and count\u003c\/td\u003e\n\u003ctd\u003eWithout both there is no pack total to compare\u003c\/td\u003e\n\u003ctd\u003e10 mg x 60 capsules = 600 mg (label claim)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eLot number and a certificate for that lot\u003c\/td\u003e\n\u003ctd\u003eA certificate proves nothing unless the numbers match\u003c\/td\u003e\n\u003ctd\u003eiMuscle COA shown only where the manufacturer supplies one for the batch we hold\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eResearch-use terms\u003c\/td\u003e\n\u003ctd\u003eDirections for use mean a product is being sold for consumption\u003c\/td\u003e\n\u003ctd\u003e18+ only; no quantities, timings or promised outcomes\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eTracked, discreet delivery\u003c\/td\u003e\n\u003ctd\u003eA traceable parcel is a record of the sale\u003c\/td\u003e\n\u003ctd\u003eFree tracked UK delivery in plain packaging; orders before 2pm Monday to Friday processed the same working day; EU 3-7 working days\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eWritten returns policy\u003c\/td\u003e\n\u003ctd\u003eTerms are known before payment\u003c\/td\u003e\n\u003ctd\u003e30-day returns on unopened items\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\u003cp\u003eThe certificate row varies for a third-party brand, so ask us before ordering if a current iMuscle certificate matters to your work. Forum and review searches meet a different limit: user reports describe sellers and parcels, but what a lot contains is a laboratory question. Prices change and appear on the listing, not in this text; cost per milligram is the fair measure. Our \u003ca href=\"\/en-ro\/blogs\/news\/how-to-choose-a-sarms-supplier-uk-checklist\"\u003eUK supplier checklist\u003c\/a\u003e applies the same tests to any shop.\u003c\/p\u003e\u003ch2\u003eCapsules compared with other forms\u003c\/h2\u003e\u003cp\u003eMK-677 is also sold as tablets and research liquids, and is sometimes called a \"peptide\", which it is not. Every MK-677 trial cited here gave it by mouth, as the molecule was designed to be absorbed from the gut; none used an injectable form. Swallowed peptides, by contrast, are largely broken down by digestive enzymes (see \u003ca href=\"\/en-ro\/blogs\/news\/do-oral-peptides-work\"\u003edo oral peptides work\u003c\/a\u003e), which is why the human ipamorelin study below used an intravenous infusion.\u003c\/p\u003e\u003cp\u003eAmong solid forms, the question is how closely each unit matches the label. A capsule's content is fixed when powder, usually blended with a filler, is filled into shells, so an uneven blend lets one capsule differ from the next while the pack average stays right. Licensed medicines are tested for this as content uniformity, unit by unit; a research certificate reporting one pooled figure shows only the average. Tablets fix their content the same way at pressing.\u003c\/p\u003e\u003cp\u003eLiquids carry a concentration instead, so the amount in a measured volume depends on complete dissolution, on the measuring device and on solvent not evaporating after opening, and most compounds degrade faster in solution than dry. None of this implies that one form acts differently in the body; it concerns only what a label and a certificate can vouch for.\u003c\/p\u003e\u003ch2\u003eMK-677 compared with ipamorelin\u003c\/h2\u003e\u003cp\u003e\"Ibutamoren vs ipamorelin\" is the comparison most often searched for this compound. Both are GHS-R1a agonists that prompt the pituitary to release its own growth hormone; the human data show where they part.\u003c\/p\u003e\u003ctable\u003e\n\u003cthead\u003e\u003ctr\u003e\n\u003cth\u003ePoint\u003c\/th\u003e\n\u003cth\u003eMK-677 (this product)\u003c\/th\u003e\n\u003cth\u003eIpamorelin\u003c\/th\u003e\n\u003c\/tr\u003e\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003eChemical type\u003c\/td\u003e\n\u003ctd\u003eNon-peptide small molecule, C27H36N4O5S, 528.7, CAS 159634-47-6\u003c\/td\u003e\n\u003ctd\u003ePentapeptide Aib-His-D-2-Nal-D-Phe-Lys-NH2, C38H49N9O5, 711.9, CAS 170851-70-4\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eRoute in human studies\u003c\/td\u003e\n\u003ctd\u003eBy mouth\u003c\/td\u003e\n\u003ctd\u003eIntravenous infusion\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eTime course in people\u003c\/td\u003e\n\u003ctd\u003e24-hour growth hormone and IGF-1 raised during weeks of daily use\u003c\/td\u003e\n\u003ctd\u003eOne burst of growth hormone peaking at about 40 minutes; terminal half-life about two hours\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eHuman research base\u003c\/td\u003e\n\u003ctd\u003eRandomised trials in older adults (up to two years) and obese men\u003c\/td\u003e\n\u003ctd\u003eA pharmacokinetic study in healthy men across five infusion rates\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eUK status\u003c\/td\u003e\n\u003ctd\u003eUnlicensed; research use only\u003c\/td\u003e\n\u003ctd\u003eUnlicensed; research use only\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eWADA\u003c\/td\u003e\n\u003ctd\u003eS2, prohibited at all times\u003c\/td\u003e\n\u003ctd\u003eS2, prohibited at all times\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\u003cp\u003eThe time course is the sharpest contrast. In the study by Gobburu and colleagues, healthy men received ipamorelin as a 15-minute intravenous infusion; growth hormone rose in a single episode peaking at around 40 minutes and then declined, and the peptide's terminal half-life was about two hours (Gobburu et al., 1999). The MK-677 trials instead recorded raised 24-hour growth hormone and sustained IGF-1 during daily oral use. Different designs, routes and populations mean these profiles cannot rank the two, and we know of no trial giving both to the same people.\u003c\/p\u003e\u003cp\u003eA PubMed search returns no human study of ipamorelin taken by mouth, so its human pharmacology comes from infusion alone, whereas MK-677's comes from oral use. Our ipamorelin listing is on the \u003ca href=\"\/en-ro\/collections\/ipamorelin\"\u003eipamorelin collection page\u003c\/a\u003e; see also the \u003ca href=\"\/en-ro\/blogs\/news\/ipamorelin-research-guide\"\u003eipamorelin research guide\u003c\/a\u003e and \u003ca href=\"\/en-ro\/blogs\/news\/mk-677-vs-ipamorelin-vs-hgh\"\u003eMK-677 vs ipamorelin vs HGH\u003c\/a\u003e. None of this recommends either compound.\u003c\/p\u003e\u003ch2\u003eReading the certificate of analysis for this product\u003c\/h2\u003e\u003cp\u003eiMuscle is a third-party brand, so any certificate of analysis (COA) for this product is the manufacturer's, not ours. A COA is shown only where iMuscle supplies one for the batch we hold; a generic document is not a substitute for a batch certificate. A real batch certificate carries the lot number printed on the pack, the test method (HPLC or LC-MS) and a purity figure. Free Muscle-brand compounds are assayed batch by batch at Janoshik Analytical; that programme does not cover iMuscle. Read an iMuscle certificate against this page:\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eIdentity.\u003c\/strong\u003e HPLC matches the sample's retention time to an ibutamoren reference standard; LC-MS adds a measured mass, about m\/z 529.25 for protonated C27H36N4O5S.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePurity, as a percentage.\u003c\/strong\u003e It grades the material, not the amount; a high figure is compatible with capsules holding well over or under 10 mg.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eContent per capsule.\u003c\/strong\u003e The line that tests the 10 mg claim; multiplied by 60, it gives the real pack total to set against 600 mg. It should say whether it is expressed as free base or mesylate.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eBatch number and test date.\u003c\/strong\u003e These tie the result to your pot and show its age.\u003c\/li\u003e\n\u003c\/ul\u003e\u003cp\u003eFor this brand, a missing certificate leaves 10 mg and 600 mg as iMuscle's claim only; purity without content supports identity but not strength; a batch number that differs from your pot means another production run. In each case \u003ca href=\"\/en-ro\/pages\/contact\"\u003econtact us\u003c\/a\u003e with the lot number. See \u003ca href=\"\/en-ro\/blogs\/news\/how-to-read-a-certificate-of-analysis\"\u003ehow to read a COA\u003c\/a\u003e and our \u003ca href=\"\/en-ro\/pages\/lab-tests\"\u003elab tests\u003c\/a\u003e page.\u003c\/p\u003e\u003ch2\u003eDetection, sport and testing\u003c\/h2\u003e\u003cp\u003eIbutamoren is prohibited in and out of competition under section S2 of the WADA Prohibited List, named among the growth hormone secretagogues; in the UK the list is applied by UK Anti-Doping. Accredited laboratories screen urine for it and its metabolites, athletes have been sanctioned after positive findings, and strict liability makes an athlete responsible for whatever is in their sample. A research-use label on a product changes nothing in that respect.\u003c\/p\u003e\u003cp\u003eA PubMed search for ibutamoren in urine returns metabolism work in horses and hormone studies in volunteers, but no human excretion study that sets a detection window, so the accurate answer is: detectable, window not established. Windows quoted online without a study behind them deserve no weight, and blood half-life is no guide, because laboratories also target metabolites. Anyone bound by an anti-doping code should treat any exposure to MK-677 as a likely adverse finding and check the current list, which WADA revises every year.\u003c\/p\u003e\u003ch2\u003eStorage, stability and handling\u003c\/h2\u003e\u003cp\u003eWe found no published stability study of ibutamoren capsules, so no shelf life is given here. Any date iMuscle prints on the pack is the limit, and a certificate describes the batch only as it was when tested.\u003c\/p\u003e\u003col\u003e\n\u003cli\u003e\n\u003cstrong\u003eOn arrival.\u003c\/strong\u003e Check the seal and record the lot number and date of receipt; only unopened items can be returned within 30 days. On first opening, count the capsules and tell us the lot number if there are not 60.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eIn storage.\u003c\/strong\u003e Keep the pack closed in its original container, cool, dry and away from light. Humidity softens, sticks or cracks capsule shells and speeds the breakdown of damp powder; leave any desiccant sachet in place.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eIn use.\u003c\/strong\u003e Wear nitrile gloves, work away from food and drink, and never decant capsules or mix lots, because the lot number on the pack is the only link to its certificate.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eThroughout.\u003c\/strong\u003e Keep the product out of reach of children and pets, set aside discoloured, clumped or split capsules, and dispose of surplus as chemical waste, not in household bins or drains.\u003c\/li\u003e\n\u003c\/ol\u003e\u003ch2\u003eGlossary\u003c\/h2\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eGhrelin mimetic\u003c\/strong\u003e: a compound that activates the ghrelin receptor as the stomach hormone ghrelin itself does.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eGHS-R1a\u003c\/strong\u003e: the type 1a growth hormone secretagogue receptor; both compounds compared on this page are agonists at it.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePulse amplitude\u003c\/strong\u003e: the height of each burst of growth hormone; MK-677 raised it without adding bursts.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eIGF-1 and IGFBP-3\u003c\/strong\u003e: insulin-like growth factor 1, produced largely by the liver when growth hormone rises, and the protein that carries most of it in blood.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eOral glucose tolerance test\u003c\/strong\u003e: a measure of how blood glucose responds to a standard glucose drink; it can reveal impairment while fasting glucose looks normal.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFat-free mass\u003c\/strong\u003e: everything in the body that is not fat, bone and body water included, so it is not a measure of muscle alone.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eTerminal half-life\u003c\/strong\u003e: the time for blood concentration to halve once a compound has distributed; about two hours for infused ipamorelin.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eContent uniformity\u003c\/strong\u003e: how closely individual units match the label claim, as opposed to the batch average.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eRetention time\u003c\/strong\u003e: how long a compound takes to pass through an HPLC column, the basis of an HPLC identity match.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMesylate\u003c\/strong\u003e: a methanesulfonate salt; ibutamoren mesylate is heavier than the free base, so equal milligrams hold unequal amounts of ibutamoren.\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch2\u003eAbout iMuscle Ibutamoren MK-677\u003c\/h2\u003e\u003cp\u003eOn the shelf this pot reads IBUTAMOREN, with MK and 677 beneath, on a purple label topped by the iMUSCLE logo. The front box gives 60 capsules of 10 mg, and the side panel lists 10 mg of Ibutamoren MK 677 per capsule with a chemical name and iMuscle's above-97% purity line. iMuscle's Romanian shop sells it as Ibutamoren MK 677, \"60\/10mg\", so searches for iMuscle MK-677 and for iMuscle Ibutamoren both lead to this product.\u003c\/p\u003e\u003cp\u003eiMuscle trades through separate country websites: a Romanian-language shop at imuscle.ro with sister sites for six other EU markets, Spain and France among them. Its About page counts the United Kingdom among ten countries it supplies, but names no UK stockist, so we do not present Free Muscle as an official one. This pot also goes into three of the iMuscle stacks on our site: \u003ca href=\"\/en-ro\/products\/imuscle-cardarine-ibutamoren-andarine\"\u003eCardarine, Ibutamoren and Andarine\u003c\/a\u003e, \u003ca href=\"\/en-ro\/products\/imuscle-ligandrol-ibutamoren-ostarine\"\u003eLigandrol, Ibutamoren and Ostarine\u003c\/a\u003e and \u003ca href=\"\/en-ro\/products\/imuscle-testolon-yk11-ibutamoren\"\u003eTestolon, YK-11 and Ibutamoren\u003c\/a\u003e, all on the \u003ca href=\"\/en-ro\/collections\/brand-imuscle\"\u003eiMuscle brand page\u003c\/a\u003e.\u003c\/p\u003e\u003cp\u003eIbutamoren is a non-peptide growth hormone secretagogue from Merck's research, never granted a UK medicines licence and named in section S2 of the WADA list. Of the other MK-677 brands we stock, \u003ca href=\"\/en-ro\/collections\/brand-yakka-strength\"\u003eYakka Strength\u003c\/a\u003e also states 10 mg per capsule in 60, \u003ca href=\"\/en-ro\/collections\/brand-thoroughbred-labs\"\u003eThoroughbred Labs\u003c\/a\u003e names 12.5 mg, and Free Muscle's own range offers 10, 12.5 and 25 mg with Janoshik testing of every batch. The \u003ca href=\"\/en-ro\/collections\/mk-677\"\u003eMK-677 collection\u003c\/a\u003e and our \u003ca href=\"\/en-ro\/blogs\/news\/mk-677-brands-compared\"\u003eMK-677 brand comparison\u003c\/a\u003e set out the differences.\u003c\/p\u003e\u003cp\u003eThe gallery holds a test protocol numbered RN18644 and an HPLC print-out for MK677 with lot 20210907, both from 2021. The protocol, from a laboratory in Sofia, names iMuscle LTD. as manufacturer but gives no lot number, so it cannot be tied to a particular pot. Send us the lot code from your pot through the \u003ca href=\"\/en-ro\/pages\/contact\"\u003econtact page\u003c\/a\u003e and we will tell you what iMuscle has supplied for it; Janoshik certificates apply only to Free Muscle's own brand.\u003c\/p\u003e\u003ch2\u003eRelated\u003c\/h2\u003e\u003cul\u003e\n\u003cli\u003e\n\u003ca href=\"\/en-ro\/collections\/mk-677\"\u003eAll brands of MK-677 (Ibutamoren)\u003c\/a\u003e, compared on strength, pack size and batch testing\u003c\/li\u003e\n\u003cli\u003e\u003ca href=\"\/en-ro\/collections\/brand-imuscle\"\u003eAll iMuscle products\u003c\/a\u003e\u003c\/li\u003e\n\u003cli\u003e\n\u003ca href=\"\/en-ro\/collections\/mk-677-ibutamoren\"\u003eFree Muscle's own MK-677\u003c\/a\u003e: 10mg, 12.5mg and 25mg, each batch assayed by Janoshik Analytical\u003c\/li\u003e\n\u003cli\u003e\n\u003ca href=\"\/en-ro\/collections\/ipamorelin\"\u003eIpamorelin\u003c\/a\u003e, the peptide compared above\u003c\/li\u003e\n\u003cli\u003eBackground reading: \u003ca href=\"\/en-ro\/blogs\/news\/mk-677-ibutamoren-what-the-research-says\"\u003ethe MK-677 research review\u003c\/a\u003e and \u003ca href=\"\/en-ro\/blogs\/news\/mk-677-brands-compared\"\u003ehow MK-677 brands differ\u003c\/a\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003ca href=\"\/en-ro\/pages\/shipping\"\u003eDelivery\u003c\/a\u003e and \u003ca href=\"\/en-ro\/pages\/guarantee\"\u003ereturns\u003c\/a\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\u003cp\u003e\u003cem\u003eResearch compounds sold by Free Muscle are supplied for laboratory research use only and are not for human consumption. They are not authorised as medicines by the MHRA, EMA or FDA, are not food supplements, and are sold only to adults aged 18 or over. Nothing on this page is medical or dosing advice.\u003c\/em\u003e\u003c\/p\u003e\u003ch2\u003eReferences\u003c\/h2\u003e\u003col\u003e\n\u003cli\u003eChapman IM, et al. Stimulation of the growth hormone (GH)-insulin-like growth factor I axis by daily oral administration of a GH secretogogue (MK-677) in healthy elderly subjects. J Clin Endocrinol Metab. 1996;81(12):4249-57. \u003ca href=\"https:\/\/pubmed.ncbi.nlm.nih.gov\/8954023\/\" rel=\"noopener\"\u003ePMID: 8954023\u003c\/a\u003e.\u003c\/li\u003e\n\u003cli\u003eSvensson J, et al. Two-month treatment of obese subjects with the oral growth hormone (GH) secretagogue MK-677 increases GH secretion, fat-free mass, and energy expenditure. J Clin Endocrinol Metab. 1998;83(2):362-9. \u003ca href=\"https:\/\/pubmed.ncbi.nlm.nih.gov\/9467542\/\" rel=\"noopener\"\u003ePMID: 9467542\u003c\/a\u003e.\u003c\/li\u003e\n\u003cli\u003eNass R, et al. Effects of an oral ghrelin mimetic on body composition and clinical outcomes in healthy older adults: a randomized trial. Ann Intern Med. 2008;149(9):601-11. \u003ca href=\"https:\/\/pubmed.ncbi.nlm.nih.gov\/18981485\/\" rel=\"noopener\"\u003ePMID: 18981485\u003c\/a\u003e.\u003c\/li\u003e\n\u003cli\u003eGobburu JV, et al. Pharmacokinetic-pharmacodynamic modeling of ipamorelin, a growth hormone releasing peptide, in human volunteers. Pharm Res. 1999;16(9):1412-6. \u003ca href=\"https:\/\/pubmed.ncbi.nlm.nih.gov\/10496658\/\" rel=\"noopener\"\u003ePMID: 10496658\u003c\/a\u003e.\u003c\/li\u003e\n\u003c\/ol\u003e","brand":"iMuscle","offers":[{"title":"Default Title","offer_id":48468979155170,"sku":null,"price":46.99,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0772\/3499\/5426\/files\/IBUTAMOREN_720x_2aaedf4d-7fbf-48ff-bed3-22513d927b2c.jpg?v=1789931405"},{"product_id":"imuscle-ligandrol-lgd4033-60-8mg","title":"iMuscle Ligandrol LGD-4033 — 60 caps, 8mg","description":"\u003cp\u003eiMuscle Ligandrol LGD-4033 is supplied as 60 capsules stated at 8 mg each, a total of 480 mg of LGD-4033 per pack. LGD-4033, also called ligandrol, is a non-steroidal selective androgen receptor modulator with a placebo-controlled human trial behind it. This iMuscle product is stocked by Free Muscle through Muscle Market for laboratory research by adults only.\u003c\/p\u003e\n\u003ch2\u003eAbout LGD-4033\u003c\/h2\u003e\n\u003cp\u003eLGD-4033, known as ligandrol and, in later development, as VK5211, is a non-steroidal selective androgen receptor modulator developed by Ligand Pharmaceuticals. It binds the androgen receptor with high affinity and was designed to act on muscle and bone while producing less effect on the prostate and skin than testosterone.\u003c\/p\u003e\n\u003cp\u003eIn a placebo-controlled study published in 2013, 76 healthy men aged 21 to 50 received placebo or one of three amounts of LGD-4033 for 21 days (Basaria et al., 2013). Lean body mass rose in a dose-dependent manner, while fat mass did not change significantly. The same study recorded dose-dependent falls in total testosterone, sex hormone-binding globulin, HDL cholesterol and triglycerides; free testosterone and follicle-stimulating hormone fell significantly at the highest amount only. Hormones and lipids returned to baseline after the study ended. Muscle strength and stair-climbing power were also measured, but the abstract reports no functional result, and the authors called for longer trials. Later development did not lead to approval.\u003c\/p\u003e\n\u003cp\u003eOutside clinical trials, the main evidence of harm comes from case reports. In 2020 physicians at Baylor College of Medicine described a 32-year-old man admitted with jaundice, itching and raised liver enzymes after taking a product sold over the counter as Ligandrol for about two weeks (Barbara et al., 2020). A liver biopsy showed cholestatic hepatitis with mild fibrosis, and his blood tests improved once he stopped. The product was never analysed, and the authors noted it may have contained other unapproved drugs. One case cannot show how often such injury occurs, and no long-term human data have been published. Nothing summarised here is a claim about this product.\u003c\/p\u003e\n\u003ch3\u003eChemical identity\u003c\/h3\u003e\n\u003cp\u003ePubChem records LGD-4033 under the identifiers below, which describe the molecule a certificate for this pack should report finding.\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eSystematic name\u003c\/strong\u003e: 4-[(2R)-2-[(1R)-2,2,2-trifluoro-1-hydroxyethyl]pyrrolidin-1-yl]-2-(trifluoromethyl)benzonitrile\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCAS number\u003c\/strong\u003e: 1165910-22-4\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFormula and molecular weight\u003c\/strong\u003e: C14H12F6N2O, 338.25 g\/mol\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eInChIKey\u003c\/strong\u003e: OPSIVAKKLQRWKC-VXGBXAGGSA-N\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePubChem CID\u003c\/strong\u003e: 44137686\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2\u003eThis listing\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003eCompound: LGD-4033 (Ligandrol)\u003c\/li\u003e\n\u003cli\u003eBrand: iMuscle\u003c\/li\u003e\n\u003cli\u003eForm: capsules\u003c\/li\u003e\n\u003cli\u003ePack size: 60 capsules\u003c\/li\u003e\n\u003cli\u003eStated strength: 8 mg per capsule (manufacturer's label claim)\u003c\/li\u003e\n\u003cli\u003eStated total per pack: 480 mg\u003c\/li\u003e\n\u003cli\u003eIntended use: laboratory research only, not for human consumption\u003c\/li\u003e\n\u003cli\u003eSold to adults aged 18 and over\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eThe strength is the manufacturer's label claim; only a batch certificate confirms it. To compare brands of LGD-4033, use total milligrams per pack, as explained in \u003ca href=\"\/en-ro\/blogs\/news\/price-per-mg-compare-sarms-peptides\"\u003eprice per milligram\u003c\/a\u003e.\u003c\/p\u003e\n\u003ch2\u003eLGD-4033 in the UK: buying, legal status and what to check\u003c\/h2\u003e\n\u003cp\u003eSearches such as \"LGD 4033 UK buy\" and \"ligandrol UK\" ask two things: whether it can be bought lawfully here, and how to tell one listing from another.\u003c\/p\u003e\n\u003ch3\u003eThe legal position\u003c\/h3\u003e\n\u003cp\u003eLGD-4033 is not a licensed medicine in the UK: it has no MHRA marketing authorisation, is not an authorised food supplement, and cannot lawfully be sold for human consumption. It is not scheduled under the Misuse of Drugs Act, and Free Muscle supplies it only as a research compound, to adults aged 18 or over, for laboratory research. It is prohibited at all times under section S1 (anabolic agents) of the WADA Prohibited List. Buyers are responsible for the rules that apply to them, including any anti-doping code. Background on the class is in \u003ca href=\"\/en-ro\/blogs\/news\/what-are-sarms-the-2026-research-guide\"\u003eWhat are SARMs? The 2026 research guide\u003c\/a\u003e.\u003c\/p\u003e\n\u003ch3\u003eWhat a trustworthy listing shows, and where to find it here\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eA strength and a count that multiply.\u003c\/strong\u003e Here, 8 mg by 60 capsules gives the 480 mg stated for the pack; a listing with no strength can be neither compared nor checked.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eA named maker and seller.\u003c\/strong\u003e iMuscle manufactures this product; FreeMuscle, a business registered in Andorra, sells it and dispatches it from Scunthorpe.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eA certificate for the batch, not the brand.\u003c\/strong\u003e How this works for iMuscle stock is set out in the certificate section below.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eResearch-use terms and an age limit.\u003c\/strong\u003e No instructions for use, no outcome claims, adults aged 18 or over only.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eTracked, discreet delivery.\u003c\/strong\u003e Free tracked UK delivery in plain packaging; orders before 2pm Monday to Friday processed the same working day; EU delivery in 3-7 working days.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eReturns.\u003c\/strong\u003e Unopened items within 30 days, under our \u003ca href=\"\/en-ro\/pages\/shipping\"\u003edelivery\u003c\/a\u003e and \u003ca href=\"\/en-ro\/pages\/guarantee\"\u003eguarantee\u003c\/a\u003e terms.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eA label proves little by itself: the doctors behind the 2020 liver injury report could not say what their patient's \"Ligandrol\" contained, and nor can anyone holding a pot without a batch certificate. Threads under \"ligandrol reddit\" record experiences, not contents. More checks are in \u003ca href=\"\/en-ro\/blogs\/news\/how-to-choose-a-sarms-supplier-uk-checklist\"\u003ehow to choose a SARMs supplier in the UK\u003c\/a\u003e.\u003c\/p\u003e\n\u003ch2\u003eCapsules compared with other forms\u003c\/h2\u003e\n\u003cp\u003eProducts labelled LGD-4033 appear as capsules, tablets, liquids and loose powder. The molecule is the same in each; what differs is how the amount per unit is fixed and how it can be checked. No published study has compared the formats.\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eCapsules (this product).\u003c\/strong\u003e A blended powder is portioned into shells at manufacture, so the amount per capsule is fixed then and a certificate can report it directly against the 8 mg claim. Accuracy depends on even mixing, and one assay gives the average of the capsules tested, not the spread between them.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eTablets.\u003c\/strong\u003e A similar blend compressed with binders, with the same dependence on mixing.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eLiquids.\u003c\/strong\u003e Labelled in milligrams per millilitre. A certificate describes the solution on the day of testing; later accuracy depends on drawing exact volumes and on the compound staying dissolved, and solvent lost from a bottle opened often concentrates what remains.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eLoose powder.\u003c\/strong\u003e Sold for weighing, which moves the whole question of accuracy onto the balance.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eSolutions suit very small quantities: the Cologne excretion study described below prepared its microgram amounts from an ethanol solution (Wagener et al., 2022). Because LGD-4033 is a small synthetic molecule rather than a peptide, the usual objection to swallowed peptides, breakdown by digestive enzymes, does not arise in the same way (see \u003ca href=\"\/en-ro\/blogs\/news\/do-oral-peptides-work\"\u003edo oral peptides work\u003c\/a\u003e), and the 2013 trial gave it by mouth. We know of no published human study of LGD-4033 given by injection.\u003c\/p\u003e\n\u003ch2\u003eLGD-4033 compared with RAD-140\u003c\/h2\u003e\n\u003cp\u003e\"LGD 4033 vs RAD 140\" and \"ligandrol vs RAD 140\" are the comparisons searched most often for this compound. Both are non-steroidal SARMs that activate the androgen receptor, and both began as drug candidates that never reached approval.\u003c\/p\u003e\n\u003ctable\u003e\n\u003cthead\u003e\u003ctr\u003e\n\u003cth\u003eFeature\u003c\/th\u003e\n\u003cth\u003eLGD-4033 (this product)\u003c\/th\u003e\n\u003cth\u003eRAD-140\u003c\/th\u003e\n\u003c\/tr\u003e\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003eOther names\u003c\/td\u003e\n\u003ctd\u003eLigandrol, VK5211\u003c\/td\u003e\n\u003ctd\u003eTestolone, vosilasarm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eDeveloper\u003c\/td\u003e\n\u003ctd\u003eLigand Pharmaceuticals, later licensed to Viking Therapeutics\u003c\/td\u003e\n\u003ctd\u003eRadius Health\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eChemical family\u003c\/td\u003e\n\u003ctd\u003ePyrrolidinyl-benzonitrile with six fluorine atoms\u003c\/td\u003e\n\u003ctd\u003eChlorinated benzonitrile with an oxadiazole ring\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eFormula, molecular weight, CAS\u003c\/td\u003e\n\u003ctd\u003eC14H12F6N2O, 338.25, 1165910-22-4\u003c\/td\u003e\n\u003ctd\u003eC20H16ClN5O2, 393.8, 1182367-47-0\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003ePublished clinical trial\u003c\/td\u003e\n\u003ctd\u003ePlacebo-controlled study in 76 healthy men over 21 days (2013)\u003c\/td\u003e\n\u003ctd\u003ePhase 1 in women with advanced ER-positive, HER2-negative breast cancer (2022)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMain adverse findings in people\u003c\/td\u003e\n\u003ctd\u003eDose-related falls in testosterone, SHBG, HDL cholesterol and triglycerides; a biopsy-confirmed liver injury case\u003c\/td\u003e\n\u003ctd\u003eRaised liver enzymes and bilirubin common in the trial; liver injury case reports\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eLicensed as a medicine\u003c\/td\u003e\n\u003ctd\u003eNowhere\u003c\/td\u003e\n\u003ctd\u003eNowhere\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eWADA\u003c\/td\u003e\n\u003ctd\u003eNamed in S1.2, prohibited at all times\u003c\/td\u003e\n\u003ctd\u003eNamed in S1.2, prohibited at all times\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003cp\u003eThe two trials cannot be set side by side. LGD-4033 went to young, screened, healthy men for three weeks, with body composition and hormones among the outcomes; RAD-140 went to women with advanced cancer to find a tolerable amount for oncology, and muscle was not its question. No study has given the two compounds to comparable groups, so claims that one is \"stronger\" or \"milder\" rest on anecdote, and milligrams of two different molecules are no common currency either.\u003c\/p\u003e\n\u003cp\u003eIn law and in sport they stand together, as the last two rows show, and both are sold here for laboratory research only. RAD-140 brands are compared in the \u003ca href=\"\/en-ro\/collections\/rad-140\"\u003eRAD-140 (Testolone) collection\u003c\/a\u003e, and its trial and case reports are covered in \u003ca href=\"\/en-ro\/blogs\/news\/rad-140-testolone-what-the-research-says\"\u003eRAD-140 (testolone): what the research says\u003c\/a\u003e.\u003c\/p\u003e\n\u003ch2\u003eReading the certificate of analysis for this product\u003c\/h2\u003e\n\u003cp\u003eBecause iMuscle is a third-party brand, a certificate of analysis (COA) for this pack is the manufacturer's document, not ours. A certificate is shown only where iMuscle has supplied one for the batch we hold; a generic document that names no batch is not a substitute. Free Muscle-brand compounds are assayed batch by batch at Janoshik Analytical, but that programme does not cover iMuscle. A real batch certificate is specific to one lot. Each part answers a different question, and each gap leaves that question open:\u003c\/p\u003e\n\u003col\u003e\n\u003cli\u003e\n\u003cstrong\u003eCompound.\u003c\/strong\u003e It should name LGD-4033 or ligandrol, ideally with the CAS number. A certificate naming only \"SARM\" or another compound does not relate to this pack.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eIdentity.\u003c\/strong\u003e HPLC matches the sample's peak to a reference standard; LC-MS adds a molecular mass that should fit C14H12F6N2O. Without identity, a purity figure could describe the wrong substance.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eIsomer.\u003c\/strong\u003e The (2R) and (1R) in the systematic name mark two stereocentres, so other isomers share the formula and mass. One, the epimer labelled M1, forms in the body and separates from LGD-4033 on chromatography (Wagener et al., 2022); mirror-image forms separate only by chiral methods, so a certificate naming none has not addressed them.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePurity.\u003c\/strong\u003e Usually an HPLC area percentage: how much of the detected material is LGD-4033. It says nothing about milligrams per capsule.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eContent per capsule.\u003c\/strong\u003e The measured figure to set against 8 mg. Without it, the 480 mg on the label stays untested.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eLot, date and laboratory.\u003c\/strong\u003e The lot must match your pot, the date shows the age of the result, and a named laboratory can be asked to confirm it. A different lot describes other stock.\u003c\/li\u003e\n\u003c\/ol\u003e\n\u003cp\u003eIf an iMuscle certificate leaves any of these gaps, \u003ca href=\"\/en-ro\/pages\/contact\"\u003econtact us\u003c\/a\u003e before relying on the batch. See also \u003ca href=\"\/en-ro\/blogs\/news\/how-to-read-a-certificate-of-analysis\"\u003ehow to read a COA\u003c\/a\u003e and our \u003ca href=\"\/en-ro\/pages\/lab-tests\"\u003elab tests\u003c\/a\u003e page.\u003c\/p\u003e\n\u003ch2\u003eDetection, sport and testing\u003c\/h2\u003e\n\u003cp\u003eLGD-4033 is named in section S1.2 (other anabolic agents) of the WADA Prohibited List and is banned in and out of competition. Under strict liability an athlete answers for any prohibited substance in their sample, whether it came from a research compound, a mislabelled product or a contaminated supplement. WADA reported 62 adverse analytical findings involving LGD-4033 in 2019, a number the Cologne authors described as the highest reported so far (Wagener et al., 2022).\u003c\/p\u003e\n\u003cp\u003eThe most detailed controlled detection data come from microgram amounts. At the German Sport University Cologne, groups of five healthy men took a single 1, 10 or 50 microgram amount, or the same amount on five consecutive days, and their urine was analysed by LC-HRMS\/MS with a limit of detection of 8 picograms per millilitre. After one 50 microgram amount, the longest-lasting metabolite, M5-a, gave its first negative sample only after 11 days. After five daily 50 microgram amounts, metabolite M5-b was still present in every sample when collection ended, 1,004 to 1,128 hours (about 42 to 47 days) after the last intake, so no end point could be set. The authors proposed the ratio of M1 to LGD-4033 for estimating when intake occurred.\u003c\/p\u003e\n\u003cp\u003eNo published study that we can cite establishes a detection window after milligram amounts such as the 8 mg stated per capsule here, so for this product the accurate statement is: detectable, window not established. The microgram results set no upper limit. Anyone subject to anti-doping rules should treat any contact with LGD-4033 as a risk of an adverse finding.\u003c\/p\u003e\n\u003ch2\u003eStorage, stability and handling\u003c\/h2\u003e\n\u003cp\u003eWe are not aware of any published shelf-life study of LGD-4033 capsules. An expiry or best-before date printed by iMuscle is the limit, and a certificate describes the batch only as it stood on its test date.\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eKeep the capsules in their original pot with the lid closed after every opening; the lot number on it is the only link to a certificate.\u003c\/li\u003e\n\u003cli\u003eChoose a cool, dry, dark cupboard away from ovens, radiators, sunny windows and bathrooms. Hard capsule shells soften and stick in damp air and turn brittle in hot, dry air.\u003c\/li\u003e\n\u003cli\u003eIf the pot has been somewhere cold, let it reach room temperature before opening, so condensation does not settle on the capsules.\u003c\/li\u003e\n\u003cli\u003eRecord when the seal was first broken alongside the lot number, and give any portion taken for analysis its own label showing compound, lot and date.\u003c\/li\u003e\n\u003cli\u003eWear gloves with opened capsules or loose powder, keep the material away from food and drink and out of reach of children and pets, and dispose of it as chemical waste, never in household bins or drains.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eReturns are accepted only on unopened items within 30 days, so a pack left sealed until needed keeps its return option.\u003c\/p\u003e\n\u003ch2\u003eGlossary\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eAndrogen receptor\u003c\/strong\u003e: the protein inside cells that testosterone switches on; LGD-4033 binds the same receptor.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSARM\u003c\/strong\u003e: a non-steroidal ligand of the androgen receptor, developed in the hope of anabolic action in muscle and bone with less action on the prostate.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSHBG\u003c\/strong\u003e: sex hormone-binding globulin, the blood protein that carries much circulating testosterone.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eHDL cholesterol\u003c\/strong\u003e: cholesterol carried in high-density lipoproteins, a standard blood lipid measurement.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePhase 1 trial\u003c\/strong\u003e: an early, usually small clinical study of how a compound is tolerated and handled by the body, before any larger trial examines efficacy.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCholestatic liver injury\u003c\/strong\u003e: damage that impairs the flow of bile, typically causing jaundice and itching.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eStereocentre\u003c\/strong\u003e: an atom whose attached groups can be arranged in two mirror-image ways; LGD-4033 has two.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eEpimer\u003c\/strong\u003e: an isomer differing from another at only one of several stereocentres.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMetabolite\u003c\/strong\u003e: a substance the body makes from another; anti-doping tests target long-lasting ones.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eLimit of detection\u003c\/strong\u003e: the lowest concentration a method can reliably detect.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eAdverse analytical finding\u003c\/strong\u003e: an anti-doping laboratory's report that a sample contains a prohibited substance, its metabolites or markers of its use; it starts the results-management process rather than concluding it.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2\u003eAbout iMuscle Ligandrol LGD-4033\u003c\/h2\u003e\u003cp\u003eiMuscle's ligandrol comes in a pot labelled LIGANDROL in light blue, with LGD and 4033 printed underneath and the iMUSCLE logo above. At 8 mg per capsule it carries the lowest figure in the brand's single-compound line, where every other pot is labelled 10 or 15 mg. The front box states 60 capsules; the side panel gives 8 mg of Ligandrol LGD 4033 per capsule beside a chemical name and the brand's claim of purity tested above 97%; and the brand's own shop lists it as \"60\/8mg\", 480 mg per pot.\u003c\/p\u003e\u003cp\u003eOn its About page iMuscle calls itself an international online shop for SARMs. Free Muscle stocks its products as a retailer, not as an appointed distributor: we found no iMuscle page naming UK sellers, and we make no claim to official or exclusive status. Ligandrol appears in three iMuscle stacks we list, \u003ca href=\"\/en-ro\/products\/imuscle-cardarine-gw501516-ligandrol\"\u003eCardarine and Ligandrol\u003c\/a\u003e, \u003ca href=\"\/en-ro\/products\/imuscle-ligandrol-ibutamoren-ostarine\"\u003eLigandrol, Ibutamoren and Ostarine\u003c\/a\u003e and \u003ca href=\"\/en-ro\/products\/imuscle-ligandrol-testolon-yk-11\"\u003eLigandrol, Testolon and YK-11\u003c\/a\u003e, and the whole range is on the \u003ca href=\"\/en-ro\/collections\/brand-imuscle\"\u003eiMuscle brand page\u003c\/a\u003e.\u003c\/p\u003e\u003cp\u003eLGD-4033 is a non-steroidal SARM first developed by Ligand Pharmaceuticals; its main human evidence is one short placebo-controlled study in healthy young men. It is unlicensed in the UK and banned under WADA section S1. As of October 2026 no other brand of LGD-4033 is on our shelves; the \u003ca href=\"\/en-ro\/collections\/lgd-4033\"\u003eLGD-4033 collection\u003c\/a\u003e and the \u003ca href=\"\/en-ro\/blogs\/news\/lgd-4033-ligandrol-research-guide\"\u003eligandrol research guide\u003c\/a\u003e cover the compound itself.\u003c\/p\u003e\u003cp\u003eIts gallery shows protocol RN18654 from 2021, recording an HPLC assay of one sample without a lot number, and an HPLC print-out labelled LGD4033 with lot 20210911. Both record a 2021 test rather than the pots on sale now. Check the lot code printed on your pot and \u003ca href=\"\/en-ro\/pages\/contact\"\u003econtact us\u003c\/a\u003e with it; we pass on whatever iMuscle supplies for that lot, and Free Muscle's Janoshik programme does not cover this brand.\u003c\/p\u003e\u003ch2\u003eRelated\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003ca href=\"\/en-ro\/collections\/lgd-4033\"\u003eAll brands of LGD-4033 (Ligandrol)\u003c\/a\u003e, compared on strength, pack size and batch testing\u003c\/li\u003e\n\u003cli\u003e\n\u003ca href=\"\/en-ro\/collections\/brand-imuscle\"\u003eAll iMuscle products\u003c\/a\u003e stocked at Free Muscle\u003c\/li\u003e\n\u003cli\u003e\n\u003ca href=\"\/en-ro\/blogs\/news\/lgd-4033-ligandrol-research-guide\"\u003eLGD-4033 (ligandrol): trials, findings and UK status\u003c\/a\u003e, the full research guide\u003c\/li\u003e\n\u003cli\u003e\n\u003ca href=\"\/en-ro\/collections\/ostarine\"\u003eOstarine (MK-2866)\u003c\/a\u003e and \u003ca href=\"\/en-ro\/collections\/sarms\"\u003eall SARMs\u003c\/a\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003ca href=\"\/en-ro\/pages\/shipping\"\u003eDelivery\u003c\/a\u003e and \u003ca href=\"\/en-ro\/pages\/guarantee\"\u003ereturns\u003c\/a\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cem\u003eResearch compounds sold by Free Muscle are supplied for laboratory research use only and are not for human consumption. They are not authorised as medicines by the MHRA, EMA or FDA, are not food supplements, and are sold only to adults aged 18 or over. Nothing on this page is medical or dosing advice.\u003c\/em\u003e\u003c\/p\u003e\n\u003ch2\u003eReferences\u003c\/h2\u003e\n\u003col\u003e\n\u003cli\u003eBasaria S, et al. The safety, pharmacokinetics, and effects of LGD-4033, a novel nonsteroidal oral, selective androgen receptor modulator, in healthy young men. J Gerontol A Biol Sci Med Sci. 2013;68(1):87-95. \u003ca href=\"https:\/\/pubmed.ncbi.nlm.nih.gov\/22459616\/\" rel=\"noopener\"\u003ePMID: 22459616\u003c\/a\u003e.\u003c\/li\u003e\n\u003cli\u003eBarbara M, et al. Ligandrol (LGD-4033)-Induced Liver Injury. ACG Case Rep J. 2020;7(6):e00370. \u003ca href=\"https:\/\/pubmed.ncbi.nlm.nih.gov\/32637435\/\" rel=\"noopener\"\u003ePMID: 32637435\u003c\/a\u003e.\u003c\/li\u003e\n\u003cli\u003eWagener F, et al. Investigations into the elimination profiles and metabolite ratios of micro-dosed selective androgen receptor modulator LGD-4033 for doping control purposes. Anal Bioanal Chem. 2022;414(2):1151-1162. \u003ca href=\"https:\/\/pubmed.ncbi.nlm.nih.gov\/34734312\/\" rel=\"noopener\"\u003ePMID: 34734312\u003c\/a\u003e.\u003c\/li\u003e\n\u003c\/ol\u003e","brand":"iMuscle","offers":[{"title":"Default Title","offer_id":48468979482850,"sku":null,"price":35.99,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0772\/3499\/5426\/files\/LIGANDROL_720x_31d8619e-fb4e-4156-b614-1cc97bde668c.jpg?v=1789931406"},{"product_id":"imuscle-ligandrol-ibutamoren-ostarine","title":"iMuscle Ligandrol + Ibutamoren + Ostarine stack","description":"\u003cp\u003eThe iMuscle Ligandrol, Ibutamoren and Ostarine bundle groups three iMuscle research compounds in one listing: ligandrol (LGD-4033), ibutamoren (MK-677) and ostarine (MK-2866). Two are SARMs and one is a growth hormone secretagogue. A labelled iMuscle pot for each of the three appears in the photographs; a combined figure is not given before the contents of the pots in stock have been verified. Supplied to adults for laboratory research only, not for human consumption.\u003cbr\u003eAll in one tub.\u003c\/p\u003e\n\u003cp\u003eA bundle is a listing convenience only: it lets products from one manufacturer be ordered in a single purchase. Nothing on this page claims that they act together or should be studied together, and Free Muscle publishes no stack or cycle guidance for any product. Each compound is described in turn.\u003c\/p\u003e\n\u003ch2\u003eThis listing\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003eBrand: iMuscle (third-party brand, Muscle Market)\u003c\/li\u003e\n\u003cli\u003eCompounds: ligandrol (LGD-4033), ibutamoren (MK-677), ostarine (MK-2866)\u003c\/li\u003e\n\u003cli\u003eForm and pack: capsules; three iMuscle pots appear in the photographs, each marked 60 capsules, and we will verify the pots in stock on request\u003c\/li\u003e\n\u003cli\u003eStrength: 8 mg (ligandrol), 10 mg (ibutamoren) and 15 mg (ostarine) per capsule on the labels of the singles; the listing adds no figure for the trio\u003c\/li\u003e\n\u003cli\u003eCOA: only where iMuscle supplies one for the batch held\u003c\/li\u003e\n\u003cli\u003eSold to adults aged 18 and over, for laboratory research only\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eiMuscle's single-compound listings do state strengths: \u003ca href=\"\/en-ro\/products\/imuscle-ligandrol-lgd4033-60-8mg\"\u003eiMuscle Ligandrol LGD-4033\u003c\/a\u003e is labelled 8 mg per capsule, \u003ca href=\"\/en-ro\/products\/imuscle-ostarine-k2866-60-15mg\"\u003eiMuscle Ostarine MK-2866\u003c\/a\u003e 15 mg and \u003ca href=\"\/en-ro\/products\/imuscle-ibutamoren-mk-677-60-10mg\"\u003eiMuscle Ibutamoren MK-677\u003c\/a\u003e 10 mg, each in packs of 60 capsules. The pots photographed for this listing carry those same labels; have us verify the pots in stock before you order.\u003c\/p\u003e\n\u003ch2\u003eAbout the compounds in this bundle\u003c\/h2\u003e\n\u003ch3\u003eLigandrol (LGD-4033)\u003c\/h3\u003e\n\u003cp\u003eLigandrol (LGD-4033, VK5211, anabolicum) is a non-steroidal SARM from Ligand Pharmaceuticals. Its main published placebo-controlled human study, a 21-day trial in 76 healthy men aged 21 to 50, reported dose-dependent gains in lean body mass with no significant change in fat mass, together with dose-dependent suppression of total testosterone, SHBG, HDL cholesterol and triglycerides, which returned to baseline after the study ended (Basaria 2013). It was never approved. WADA class S1. Compare brands on the \u003ca href=\"\/en-ro\/collections\/lgd-4033\"\u003eLigandrol (LGD-4033) collection page\u003c\/a\u003e.\u003c\/p\u003e\n\u003ch3\u003eMK-677 (Ibutamoren)\u003c\/h3\u003e\n\u003cp\u003eIbutamoren (MK-677, L-163,191, nutrobal) is not a SARM but an orally active ghrelin receptor (GHS-R1a) agonist, a growth hormone secretagogue. It has more human trial data than most compounds in this category. A two-year randomised trial in 65 healthy adults aged 60 to 81 reported, at its one-year primary analysis, sustained rises in growth hormone and IGF-1, about 1 kg more fat-free mass than placebo and no gain in strength or function, alongside increased appetite, mild fluid retention, muscle pain, higher fasting glucose and reduced insulin sensitivity (Nass 2008). Never approved. WADA class S2. Compare brands on the \u003ca href=\"\/en-ro\/collections\/mk-677\"\u003eMK-677 (Ibutamoren) collection page\u003c\/a\u003e.\u003c\/p\u003e\n\u003ch3\u003eOstarine (MK-2866, enobosarm)\u003c\/h3\u003e\n\u003cp\u003eOstarine (MK-2866, enobosarm, GTx-024) is a non-steroidal selective androgen receptor modulator developed for muscle wasting, and the most clinically studied SARM. A 2011 phase II trial in healthy older adults reported more lean body mass than placebo over twelve weeks and a change in one physical function measure, with dose-related falls in HDL cholesterol and suppression of total testosterone in men (Dalton 2011). Later phase III trials in patients with cancer-related muscle wasting did not lead to approval, and it is not licensed anywhere. WADA class S1. Compare brands on the \u003ca href=\"\/en-ro\/collections\/ostarine\"\u003eOstarine (MK-2866, enobosarm) collection page\u003c\/a\u003e.\u003c\/p\u003e\n\u003ch3\u003eChemical identity of each compound\u003c\/h3\u003e\n\u003ctable\u003e\n\u003cthead\u003e\n\u003ctr\u003e\n\u003cth\u003eCompound\u003c\/th\u003e\n\u003cth\u003ePubChem CID\u003c\/th\u003e\n\u003cth\u003eCAS number\u003c\/th\u003e\n\u003cth\u003eFormula\u003c\/th\u003e\n\u003cth\u003eMolecular weight\u003c\/th\u003e\n\u003c\/tr\u003e\n\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003eLigandrol (LGD-4033)\u003c\/td\u003e\n\u003ctd\u003e44137686\u003c\/td\u003e\n\u003ctd\u003e1165910-22-4\u003c\/td\u003e\n\u003ctd\u003eC14H12F6N2O\u003c\/td\u003e\n\u003ctd\u003e338.25\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eIbutamoren (MK-677), free base\u003c\/td\u003e\n\u003ctd\u003e178024\u003c\/td\u003e\n\u003ctd\u003e159634-47-6\u003c\/td\u003e\n\u003ctd\u003eC27H36N4O5S\u003c\/td\u003e\n\u003ctd\u003e528.7\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOstarine (enobosarm)\u003c\/td\u003e\n\u003ctd\u003e11326715\u003c\/td\u003e\n\u003ctd\u003e841205-47-8\u003c\/td\u003e\n\u003ctd\u003eC19H14F3N3O3\u003c\/td\u003e\n\u003ctd\u003e389.3\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003cp\u003eThese summaries report what was measured in trial participants, each compound studied separately. No published study has examined the three together, and none of it is a claim about the capsules in this bundle.\u003c\/p\u003e\n\u003ch2\u003eLigandrol, ibutamoren and ostarine in the UK: buying, legal status and what to check\u003c\/h2\u003e\n\u003cp\u003eTwo questions matter here: may these compounds change hands in Britain, and how does a checkable listing differ from one taken on trust?\u003c\/p\u003e\n\u003ch3\u003eThe legal position for each compound\u003c\/h3\u003e\n\u003cp\u003eNone of the compounds on this page is a licensed medicine in the United Kingdom, none has been assessed by the MHRA and none is an authorised food supplement. At the time of writing, none of the three is controlled under the Misuse of Drugs Act 1971. Free Muscle supplies them to adults aged 18 and over for laboratory research only. They are not for human consumption. LGD-4033 and ostarine fall under WADA class S1; MK-677 is listed under S2. For ibutamoren, see our \u003ca href=\"\/en-ro\/pages\/mk-677-legal-status-uk\"\u003eMK-677 legal status page\u003c\/a\u003e. Our \u003ca href=\"\/en-ro\/blogs\/news\/what-are-sarms-the-2026-research-guide\"\u003eSARMs research guide\u003c\/a\u003e covers the class.\u003c\/p\u003e\n\u003ch3\u003eWhy these three names attract scrutiny\u003c\/h3\u003e\n\u003cp\u003eOver five years, the falsified medicines working group of the European network of official medicines control laboratories, whose members include the MHRA laboratory in London, collected results on 324 samples from 14 laboratories in 13 countries (Barrios 2025). Ibutamoren, ligandrol and ostarine headed the list of the five molecules reported most often, and about a quarter of products had been presented as dietary supplements, which the authors noted leaves buyers unaware that a pharmaceutical substance is inside.\u003c\/p\u003e\n\u003cp\u003eLabels are the other problem. Of 44 products bought online as SARMs in 2016, only 23 contained a SARM at all, while 17 held a different unapproved drug, ibutamoren among them, and only 18 matched the amount on their label (Van Wagoner 2017). For a pack naming three compounds, each name is a separate claim needing its own evidence.\u003c\/p\u003e\n\u003ch3\u003eWhat a checkable UK listing shows\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eA stated amount per capsule for each compound.\u003c\/li\u003e\n\u003cli\u003eA printed batch number matching a certificate that covers every compound.\u003c\/li\u003e\n\u003cli\u003eA named UK seller, an 18+ restriction, plain packaging and tracked delivery.\u003c\/li\u003e\n\u003cli\u003eNo directions for human use and no promised outcomes.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eThis bundle meets the seller-side points: it is sold by FreeMuscle, a business registered in Andorra, and dispatched from Scunthorpe, with free tracked UK delivery in plain packaging, same-day processing for orders placed before 2pm Monday to Friday, EU delivery in three to seven working days, and 30-day returns on unopened items (\u003ca href=\"\/en-ro\/pages\/shipping\"\u003edelivery\u003c\/a\u003e, \u003ca href=\"\/en-ro\/pages\/guarantee\"\u003eguarantee\u003c\/a\u003e). On strength, the figures come from each pot's label, since the bundle listing gives none. See our \u003ca href=\"\/en-ro\/blogs\/news\/how-to-choose-a-sarms-supplier-uk-checklist\"\u003eUK supplier checklist\u003c\/a\u003e.\u003c\/p\u003e\n\u003ch2\u003eCapsules compared with other forms\u003c\/h2\u003e\n\u003cp\u003eAll three compounds are also sold as liquids, tablets and powder. No study has compared formats for any of them, so the useful comparison concerns measurement, not effect.\u003c\/p\u003e\n\u003cp\u003eA capsule fixes its quantity once, at filling, before the container is sealed. A laboratory can then report milligrams per capsule directly. The weakness is variation between capsules, which depends on how evenly the powder was mixed and which a single averaged assay cannot show. A liquid fixes only a concentration. Every later portion depends on the measuring device and on solvent not evaporating from a bottle opened many times. Loose powder fixes nothing in advance and relies wholly on the balance used to weigh it.\u003c\/p\u003e\n\u003cp\u003eAll three are small synthetic molecules, not peptides, so the argument that swallowed peptides are largely digested, discussed in \u003ca href=\"\/en-ro\/blogs\/news\/do-oral-peptides-work\"\u003edo oral peptides work\u003c\/a\u003e, does not apply in the same way; each trial cited above gave the compound by mouth. One point is specific to ibutamoren: it is often sold as its mesylate salt, which weighs more than the free base in the table above, so any stated amount should say which form it counts. None of this is a claim about what a capsule does.\u003c\/p\u003e\n\u003ch2\u003eLigandrol, ostarine and MK-677 compared with RAD-140\u003c\/h2\u003e\n\u003cp\u003eRAD-140 (testolone) is not in this pack but is the compound most often compared with ligandrol, so it is included for reference.\u003c\/p\u003e\n\u003ctable\u003e\n\u003cthead\u003e\n\u003ctr\u003e\n\u003cth\u003ePoint\u003c\/th\u003e\n\u003cth\u003eLigandrol\u003c\/th\u003e\n\u003cth\u003eOstarine\u003c\/th\u003e\n\u003cth\u003eMK-677\u003c\/th\u003e\n\u003cth\u003eRAD-140 (not in this pack)\u003c\/th\u003e\n\u003c\/tr\u003e\n\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003eClass\u003c\/td\u003e\n\u003ctd\u003eNon-steroidal SARM\u003c\/td\u003e\n\u003ctd\u003eNon-steroidal SARM\u003c\/td\u003e\n\u003ctd\u003eNon-peptide growth hormone secretagogue\u003c\/td\u003e\n\u003ctd\u003eNon-steroidal SARM\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eTarget\u003c\/td\u003e\n\u003ctd\u003eAndrogen receptor\u003c\/td\u003e\n\u003ctd\u003eAndrogen receptor\u003c\/td\u003e\n\u003ctd\u003eGhrelin receptor (GHS-R1a)\u003c\/td\u003e\n\u003ctd\u003eAndrogen receptor\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOriginal developer\u003c\/td\u003e\n\u003ctd\u003eLigand Pharmaceuticals\u003c\/td\u003e\n\u003ctd\u003eGTx\u003c\/td\u003e\n\u003ctd\u003eMerck\u003c\/td\u003e\n\u003ctd\u003eRadius Health\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMain published human data\u003c\/td\u003e\n\u003ctd\u003e21-day trial in 76 healthy men\u003c\/td\u003e\n\u003ctd\u003ePhase II trial in older adults; phase III trials in cancer patients\u003c\/td\u003e\n\u003ctd\u003eTwo-year randomised trial in 65 older adults\u003c\/td\u003e\n\u003ctd\u003eOne phase 1 trial in women with advanced breast cancer\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eLicensed anywhere\u003c\/td\u003e\n\u003ctd\u003eNo\u003c\/td\u003e\n\u003ctd\u003eNo\u003c\/td\u003e\n\u003ctd\u003eNo\u003c\/td\u003e\n\u003ctd\u003eNo\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eWADA section\u003c\/td\u003e\n\u003ctd\u003eS1, anabolic agents\u003c\/td\u003e\n\u003ctd\u003eS1, anabolic agents\u003c\/td\u003e\n\u003ctd\u003eS2, growth hormone secretagogues\u003c\/td\u003e\n\u003ctd\u003eS1, anabolic agents\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003cp\u003eMK-2866 and MK-677 share only a development-code prefix, not a mechanism. Ostarine acts at the androgen receptor, the same target as testosterone. MK-677 never touches that receptor; it imitates ghrelin, prompting the pituitary to release growth hormone, which in turn raises IGF-1. Its recorded adverse findings on glucose, fluid and appetite reflect that different pathway.\u003c\/p\u003e\n\u003cp\u003eLigandrol and ostarine do share a target, and both trials recorded falls in testosterone and HDL cholesterol. The difference is the record: ostarine was taken through larger and longer trials in older adults and cancer patients, ligandrol, in the published record, mainly through one three-week study in healthy men. No trial compared them directly, so claims that one is stronger or milder rest on anecdote.\u003c\/p\u003e\n\u003cp\u003eRAD-140 is a third androgen receptor ligand, from a different chemical family. Its only clinical trial studied tolerability in cancer, where raised liver enzymes were frequent; our \u003ca href=\"\/en-ro\/blogs\/news\/rad-140-testolone-what-the-research-says\"\u003eRAD-140 research summary\u003c\/a\u003e gives the detail. RAD-140 brands are compared on the \u003ca href=\"\/en-ro\/collections\/rad-140\"\u003eRAD-140 (Testolone) collection page\u003c\/a\u003e, and ibutamoren's nearest peptide counterpart is covered in \u003ca href=\"\/en-ro\/blogs\/news\/mk-677-vs-ipamorelin-vs-hgh\"\u003eMK-677 vs ipamorelin vs somatropin\u003c\/a\u003e. Nothing here ranks one compound above another.\u003c\/p\u003e\n\u003ch2\u003eReading the certificate of analysis for this product\u003c\/h2\u003e\n\u003cp\u003eAny certificate for this pack comes from iMuscle, not from us. We show one only when iMuscle has supplied it for the precise batch on our shelves, and if nothing is shown, nothing has been supplied; a generic document never stands in. Janoshik Analytical testing of every batch, with certificates emailed on request, applies to Free Muscle-brand products only.\u003c\/p\u003e\n\u003cp\u003eThree compounds mean three identities to prove. Check each field:\u003c\/p\u003e\n\u003col\u003e\n\u003cli\u003e\n\u003cstrong\u003eBatch number.\u003c\/strong\u003e Compare it character by character with the lot printed on your pack; a near miss is a different lot.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eIdentity.\u003c\/strong\u003e HPLC compares a sample's peak with a reference standard; LC-MS adds a measured mass that should fit the formulas in the table above. Each compound needs its own result; one confirmed compound says nothing of the other two.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eStereochemistry.\u003c\/strong\u003e Ligandrol has two stereocentres and ostarine one, so mirror-image forms share their formula and mass. Only a chiral method separates them.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePurity.\u003c\/strong\u003e Normally reported as a percentage of chromatogram peak area. A figure of 99 per cent describes the proportion of what was detected, never the milligrams inside a capsule.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eContent per capsule.\u003c\/strong\u003e Compare it with the label strength of whichever pot carries that lot.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eTest date and laboratory.\u003c\/strong\u003e A named laboratory can confirm a report at source.\u003c\/li\u003e\n\u003c\/ol\u003e\n\u003cp\u003eA missing field has a specific meaning here. No certificate for the batch in stock means nothing independent confirms which compounds are present. Identity results without content figures confirm presence, not amount. Email us through the \u003ca href=\"\/en-ro\/pages\/contact\"\u003econtact page\u003c\/a\u003e with the product name and batch number and we will send what we hold, or say plainly that there is none. Our \u003ca href=\"\/en-ro\/pages\/lab-tests\"\u003elab testing page\u003c\/a\u003e and \u003ca href=\"\/en-ro\/blogs\/news\/how-to-read-a-certificate-of-analysis\"\u003ehow to read a certificate of analysis\u003c\/a\u003e explain the methods.\u003c\/p\u003e\n\u003ch2\u003eDetection, sport and testing\u003c\/h2\u003e\n\u003cp\u003eAll three compounds are prohibited at all times, in and out of competition, on the WADA Prohibited List, which UK Anti-Doping applies in the UK. Ligandrol and ostarine are named in section S1, anabolic agents; ibutamoren falls under section S2 as a growth hormone secretagogue. Under strict liability an athlete answers for any prohibited substance in their sample, whatever its source.\u003c\/p\u003e\n\u003cp\u003eAccredited anti-doping laboratories screen routinely for ligandrol and ostarine, and both have been the subject of published excretion studies using microgram amounts, summarised on the single-compound pages for \u003ca href=\"\/en-ro\/products\/imuscle-ligandrol-lgd4033-60-8mg\"\u003eiMuscle LGD-4033\u003c\/a\u003e and \u003ca href=\"\/en-ro\/products\/imuscle-ostarine-k2866-60-15mg\"\u003eiMuscle Ostarine\u003c\/a\u003e. Those studies set no upper limit and none used capsules like these. Ibutamoren is also within the scope of testing. A blood half-life is no guide to detection, because laboratories also target long-lived metabolites. For every compound in this bundle the accurate statement is: detectable, window not established. Anyone bound by an anti-doping code should treat this product as prohibited.\u003c\/p\u003e\n\u003ch2\u003eStorage, stability and handling\u003c\/h2\u003e\n\u003cp\u003eNo published shelf-life study covers ligandrol, ibutamoren or ostarine in capsule form, so no shelf life is quoted here beyond any expiry date iMuscle prints. A certificate describes a batch only on its test date.\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eKeep every container as supplied.\u003c\/strong\u003e The lot number on each pot is its only link to a certificate, and loose capsules can look identical.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCool, dry and dark.\u003c\/strong\u003e A closed cupboard away from heat and sunlight. Close the lid after each opening and leave any desiccant inside.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eKeep a log.\u003c\/strong\u003e Record the date received and the date each seal was broken beside the lot number, and label any sample drawn for analysis.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eInspect before use in the lab.\u003c\/strong\u003e Capsules that have clumped, softened or changed colour should be quarantined and reported to us with the lot number.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eTreat it as bench material.\u003c\/strong\u003e Use gloves once a container is open, keep the work area free of food and drink, store it where children and pets cannot reach, and send surplus to chemical waste under local rules.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eReturns within 30 days apply to unopened items only.\u003c\/p\u003e\n\u003ch2\u003eGlossary\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eSARM\u003c\/strong\u003e: short for selective androgen receptor modulator. Two of the three compounds here qualify; ibutamoren sits in a different class altogether.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eGrowth hormone secretagogue\u003c\/strong\u003e: any substance that prompts the pituitary gland to release growth hormone; ibutamoren belongs to this class.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eGhrelin and GHS-R1a\u003c\/strong\u003e: ghrelin is a hormone made mainly in the stomach; GHS-R1a is its receptor, which ibutamoren activates.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eIGF-1\u003c\/strong\u003e: insulin-like growth factor 1, produced largely by the liver in response to growth hormone and measured as a marker of that axis.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSHBG\u003c\/strong\u003e: the carrier protein that binds testosterone in blood; it fell in a dose-dependent manner in the 2013 LGD-4033 study.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCachexia\u003c\/strong\u003e: wasting of muscle and body weight in serious illness such as cancer; enobosarm's late-stage trials enrolled patients with it.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMesylate\u003c\/strong\u003e: the methanesulfonate salt in which ibutamoren is commonly supplied; a milligram of salt holds less than a milligram of free base.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eStereocentre\u003c\/strong\u003e: a point in a molecule where two mirror-image arrangements are possible, giving isomers of identical mass.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eStrict liability\u003c\/strong\u003e: the anti-doping principle that a prohibited substance in a sample counts against the athlete regardless of intent.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2\u003eAbout the iMuscle Ligandrol, Ibutamoren and Ostarine stack\u003c\/h2\u003e\n\u003cp\u003eThe photographs show three iMuscle pots in a row: light blue LIGANDROL, purple IBUTAMOREN and yellow OSTABOLON. Each has its own label box with a capsule count and strength; the matching singles are labelled 60 capsules at 8 mg, 10 mg and 15 mg. Have us verify that the pots in stock match the photographs before ordering, as this page does not yet quote totals for the stack.\u003c\/p\u003e\n\u003cp\u003eiMuscle lists this trio on its Romanian shop as Ligandrol, Ibutamoren, Ostarine. The separate pots in the photographs set it apart from the brand's VENOM, HULKED, COMBAT and MACHINE capsules, in which compounds are combined; those are not stocked here. iMuscle calls itself an international SARMs shop and lists the UK among ten countries it supplies, without naming any UK seller, so we do not claim official status. Other iMuscle products are on our \u003ca href=\"\/en-ro\/collections\/brand-imuscle\"\u003eiMuscle page\u003c\/a\u003e.\u003c\/p\u003e\n\u003cp\u003eTwo of the three are non-steroidal SARMs, ligandrol and ostarine, and the third, ibutamoren, is a growth hormone secretagogue. All three are unlicensed in the UK; WADA lists the SARMs under S1 and ibutamoren under S2. Their collection pages are \u003ca href=\"\/en-ro\/collections\/lgd-4033\"\u003eLGD-4033\u003c\/a\u003e, \u003ca href=\"\/en-ro\/collections\/mk-677\"\u003eMK-677\u003c\/a\u003e and \u003ca href=\"\/en-ro\/collections\/ostarine\"\u003eostarine\u003c\/a\u003e.\u003c\/p\u003e\n\u003cp\u003eThe single listings for these three pots, \u003ca href=\"\/en-ro\/products\/imuscle-ligandrol-lgd4033-60-8mg\"\u003eligandrol\u003c\/a\u003e, \u003ca href=\"\/en-ro\/products\/imuscle-ibutamoren-mk-677-60-10mg\"\u003eibutamoren\u003c\/a\u003e and \u003ca href=\"\/en-ro\/products\/imuscle-ostarine-k2866-60-15mg\"\u003eostarine\u003c\/a\u003e, each show a test protocol and an HPLC print-out from 2021, with lots 20210911, 20210907 and 20210908 on the print-outs, while this stack listing shows none. Compare those numbers with the lot code on each pot, and \u003ca href=\"\/en-ro\/pages\/contact\"\u003eask us\u003c\/a\u003e with the codes; Janoshik testing does not cover this brand.\u003c\/p\u003e\n\u003ch2\u003eRelated\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003ca href=\"\/en-ro\/collections\/lgd-4033\"\u003eLGD-4033 (Ligandrol) collection\u003c\/a\u003e and the \u003ca href=\"\/en-ro\/blogs\/news\/lgd-4033-ligandrol-research-guide\"\u003eligandrol research guide\u003c\/a\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003ca href=\"\/en-ro\/collections\/mk-677\"\u003eMK-677 (Ibutamoren) collection\u003c\/a\u003e and \u003ca href=\"\/en-ro\/blogs\/news\/mk-677-ibutamoren-what-the-research-says\"\u003eMK-677 (ibutamoren): what the research says\u003c\/a\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003ca href=\"\/en-ro\/collections\/ostarine\"\u003eOstarine (MK-2866) collection\u003c\/a\u003e and the \u003ca href=\"\/en-ro\/blogs\/news\/ostarine-mk-2866-research-guide\"\u003eostarine research guide\u003c\/a\u003e\n\u003c\/li\u003e\n\u003cli\u003e\u003ca href=\"\/en-ro\/collections\/brand-imuscle\"\u003eiMuscle brand page\u003c\/a\u003e\u003c\/li\u003e\n\u003cli\u003e\u003ca href=\"\/en-ro\/collections\/market-bundles\"\u003eBundles collection\u003c\/a\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cem\u003eResearch compounds sold by Free Muscle are supplied for laboratory research use only and are not for human consumption. They are not authorised as medicines by the MHRA, EMA or FDA, are not food supplements, and are sold only to adults aged 18 or over. Nothing on this page is medical or dosing advice. Summaries of published research describe study findings and are not claims about any product.\u003c\/em\u003e\u003c\/p\u003e\n\u003ch2\u003eReferences\u003c\/h2\u003e\n\u003col\u003e\n\u003cli\u003eBasaria S, et al. The safety, pharmacokinetics, and effects of LGD-4033, a novel nonsteroidal oral, selective androgen receptor modulator, in healthy young men. J Gerontol A Biol Sci Med Sci. 2013;68(1):87-95. \u003ca href=\"https:\/\/pubmed.ncbi.nlm.nih.gov\/22459616\/\" rel=\"noopener\"\u003ePMID: 22459616\u003c\/a\u003e.\u003c\/li\u003e\n\u003cli\u003eNass R, et al. Effects of an oral ghrelin mimetic on body composition and clinical outcomes in healthy older adults: a randomized trial. Ann Intern Med. 2008;149(9):601-11. \u003ca href=\"https:\/\/pubmed.ncbi.nlm.nih.gov\/18981485\/\" rel=\"noopener\"\u003ePMID: 18981485\u003c\/a\u003e.\u003c\/li\u003e\n\u003cli\u003eDalton JT, et al. The selective androgen receptor modulator GTx-024 (enobosarm) improves lean body mass and physical function in healthy elderly men and postmenopausal women: results of a double-blind, placebo-controlled phase II trial. J Cachexia Sarcopenia Muscle. 2011;2(3):153-161. \u003ca href=\"https:\/\/pubmed.ncbi.nlm.nih.gov\/22031847\/\" rel=\"noopener\"\u003ePMID: 22031847\u003c\/a\u003e.\u003c\/li\u003e\n\u003cli\u003eBarrios MM, et al. SARMs, Metabolic Modulators and Growth Hormone Secretagogues in Suspected Illegal Medicines, Bought as Sport Performance Enhancers: A Retro- and Prospective Study Within the GEON. Drug Test Anal. 2025;17(10):2078-2085. \u003ca href=\"https:\/\/pubmed.ncbi.nlm.nih.gov\/40551438\/\" rel=\"noopener\"\u003ePMID: 40551438\u003c\/a\u003e.\u003c\/li\u003e\n\u003cli\u003eVan Wagoner RM, et al. Chemical Composition and Labeling of Substances Marketed as Selective Androgen Receptor Modulators and Sold via the Internet. JAMA. 2017;318(20):2004-2010. \u003ca href=\"https:\/\/pubmed.ncbi.nlm.nih.gov\/29183075\/\" rel=\"noopener\"\u003ePMID: 29183075\u003c\/a\u003e.\u003c\/li\u003e\n\u003c\/ol\u003e","brand":"iMuscle","offers":[{"title":"Default Title","offer_id":48468979646690,"sku":null,"price":114.99,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0772\/3499\/5426\/files\/image_1792190725500_fa3e8c98_1792190726169_ac9c159a.webp?v=1792190799"},{"product_id":"imuscle-ligandrol-testolon-yk-11","title":"iMuscle Ligandrol + Testolone + YK-11 stack","description":"\u003cp\u003eThe iMuscle Ligandrol, Testolone and YK-11 bundle places three androgen receptor compounds from one manufacturer in a single listing: ligandrol (LGD-4033), testolone (RAD-140) and YK-11. Its photographs show three separate labelled iMuscle pots, and a figure for the set is held back until the pots actually held have been checked. Like every product on Free Muscle, it is supplied to adults for laboratory research only and is not for human consumption.\u003c\/p\u003e\u003cp\u003eA bundle is a listing convenience only: it lets products from one manufacturer be ordered in a single purchase. Nothing on this page claims that they act together or should be studied together, and Free Muscle publishes no stack or cycle guidance for any product.\u003c\/p\u003e\u003ch2\u003eThis listing\u003c\/h2\u003e\u003cul\u003e\n\u003cli\u003eBrand: iMuscle (third-party brand, \u003ca href=\"\/en-ro\/pages\/muscle-market\"\u003eMuscle Market\u003c\/a\u003e)\u003c\/li\u003e\n\u003cli\u003eCompounds: ligandrol (LGD-4033), testolone (RAD-140), YK-11\u003c\/li\u003e\n\u003cli\u003eForm and pack: capsules; a separate iMuscle pot for each compound appears in the photographs, every one marked 60 capsules, and we will check the pots actually held on request\u003c\/li\u003e\n\u003cli\u003eStrength: ligandrol 8 mg, testolone 10 mg and YK-11 10 mg per capsule, each from its own pot's label as sold singly; the set has no figure of its own\u003c\/li\u003e\n\u003cli\u003eCOA: only where iMuscle supplies one for the batch held\u003c\/li\u003e\n\u003cli\u003eSold to adults aged 18 and over, for laboratory research only\u003c\/li\u003e\n\u003c\/ul\u003e\u003cp\u003eWhere a stated strength matters for a research record, iMuscle's single-compound listings carry one on the label: \u003ca href=\"\/en-ro\/products\/imuscle-ligandrol-lgd4033-60-8mg\"\u003eiMuscle Ligandrol LGD-4033\u003c\/a\u003e at 8 mg per capsule, \u003ca href=\"\/en-ro\/products\/imuscle-testolon-rad-140-60-10mg\"\u003eiMuscle Testolone RAD-140\u003c\/a\u003e at 10 mg and \u003ca href=\"\/en-ro\/products\/imuscle-yk-11-60-10mg\"\u003eiMuscle YK-11\u003c\/a\u003e at 10 mg, each in packs of 60.\u003c\/p\u003e\u003ch2\u003eAbout the compounds in this bundle\u003c\/h2\u003e\u003ch3\u003eLigandrol (LGD-4033)\u003c\/h3\u003e\u003cp\u003eLigandrol (LGD-4033, VK5211, anabolicum) is a non-steroidal SARM from Ligand Pharmaceuticals (PubChem CID 44137686, CAS 1165910-22-4, formula C14H12F6N2O, molecular weight 338.25). The only published placebo-controlled human study, a 21-day phase I trial in 76 healthy young men, reported a dose-dependent rise in lean body mass with no significant change in fat mass, together with dose-dependent falls in total testosterone, SHBG, HDL cholesterol and triglycerides, which returned to baseline after stopping (Basaria 2013). It was never approved. WADA class S1. Compare brands on the \u003ca href=\"\/en-ro\/collections\/lgd-4033\"\u003eLigandrol (LGD-4033) collection page\u003c\/a\u003e.\u003c\/p\u003e\u003ch3\u003eTestolone (RAD-140)\u003c\/h3\u003e\u003cp\u003eTestolone (RAD-140, vosilasarm) is a non-steroidal SARM designed by Radius Health and characterised in rats and non-human primates (Miller 2011; PubChem CID 44200882, CAS 1182367-47-0, formula C20H16ClN5O2, molecular weight 393.8). Human data are limited to a small early oncology study. That first-in-human phase 1 trial recruited 22 postmenopausal women with ER-positive, HER2-negative metastatic breast cancer and gave the compound by mouth. Liver findings led its adverse-event list, with AST raised in 59.1 per cent of participants, ALT in 45.5 per cent and bilirubin in 27.3 per cent, and 16 women had at least one grade 3 or 4 event (LoRusso 2022). It assessed tolerability and tumour response, not muscle. Published case reports describe drug-induced liver injury in adults who had taken products labelled as containing RAD-140, in one case alongside LGD-4033 (Barbara 2020). It has never been approved as a medicine. WADA class S1. Compare brands on the \u003ca href=\"\/en-ro\/collections\/rad-140\"\u003eTestolone (RAD-140) collection page\u003c\/a\u003e.\u003c\/p\u003e\u003ch3\u003eYK-11\u003c\/h3\u003e\u003cp\u003eYK-11 is a steroidal compound, structurally unlike the other SARMs here (PubChem CID 119058028, CAS 1370003-76-1, formula C25H34O6, molecular weight 430.5). In a 2011 reporter-gene study it behaved as a partial androgen receptor agonist in cultured cells (Kanno 2011). Most later work is also in cells. A 2023 study in male rats reported raised oxidative stress and impaired mitochondrial markers in the hippocampus after five weeks of exposure (Dahleh 2023). There is no formal toxicology programme, no human data and no clinical development. WADA class S1. Compare brands on the \u003ca href=\"\/en-ro\/collections\/yk-11\"\u003eYK-11 collection page\u003c\/a\u003e.\u003c\/p\u003e\u003cp\u003eEvery study above looked at one compound on its own. Nothing has been published on LGD-4033, RAD-140 and YK-11 in combination, and none of these findings is a claim about this product.\u003c\/p\u003e\u003ch2\u003eLGD-4033, RAD-140 and YK-11 in the UK: buying, legal status and what to check\u003c\/h2\u003e\u003ch3\u003eThe legal position\u003c\/h3\u003e\u003cp\u003eNone of the compounds on this page is a licensed medicine in the United Kingdom, none has been assessed by the MHRA and none is an authorised food supplement, so none may lawfully be sold for human consumption. Free Muscle supplies them to adults aged 18 and over for laboratory research only.\u003c\/p\u003e\u003cp\u003eLGD-4033 and RAD-140 are non-steroidal and, at the time of writing, are not controlled drugs in the UK. YK-11 needs a closer look. Its carbon skeleton is that of a steroid, and anabolic steroids are Class C controlled drugs in the UK, so its position is less settled than that of the other two. Anyone ordering is responsible for the rules that apply to them and their institution. All three compounds fall under WADA class S1 (anabolic agents). Our \u003ca href=\"\/en-ro\/blogs\/news\/what-are-sarms-the-2026-research-guide\"\u003eSARMs research guide\u003c\/a\u003e has more background.\u003c\/p\u003e\u003ch3\u003eWhat a trustworthy UK listing shows\u003c\/h3\u003e\u003cp\u003eThese points separate a documented product from an undocumented one:\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003eA stated amount of every compound per capsule, so that a certificate has a figure to be checked against.\u003c\/li\u003e\n\u003cli\u003eA batch or lot number printed on the pot, matching the number on the certificate.\u003c\/li\u003e\n\u003cli\u003eA certificate for that batch that covers each compound named on the label, not only the first one.\u003c\/li\u003e\n\u003cli\u003eA named seller with an address, and an 18+ restriction at checkout.\u003c\/li\u003e\n\u003cli\u003ePlain packaging and tracked delivery.\u003c\/li\u003e\n\u003cli\u003eNo instructions for taking the product and no outcome photographs or promises.\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eHow this listing compares\u003c\/h3\u003e\u003cp\u003eMeasured against that list, the first point is met by each pot's own label rather than by the bundle listing, and we will not total the set until we have checked the pots actually held. A certificate appears only where iMuscle supplies one for the batch in stock. The remaining points are met by us as the seller. The seller is named: FreeMuscle, registered in Andorra, with UK operations and dispatch in Scunthorpe; UK delivery is free, tracked and in plain packaging; orders placed before 2pm Monday to Friday are processed the same working day; EU delivery takes 3 to 7 working days; and unopened items can be returned within 30 days. Details are on the \u003ca href=\"\/en-ro\/pages\/shipping\"\u003eshipping page\u003c\/a\u003e and the \u003ca href=\"\/en-ro\/pages\/guarantee\"\u003eguarantee page\u003c\/a\u003e, and our \u003ca href=\"\/en-ro\/blogs\/news\/how-to-choose-a-sarms-supplier-uk-checklist\"\u003eUK supplier checklist\u003c\/a\u003e sets out each check in more depth.\u003c\/p\u003e\u003ch2\u003eCapsules compared with other forms\u003c\/h2\u003e\u003cp\u003eAll three compounds circulate as capsules, tablets and liquids, and \"YK11 injectable\" and \"RAD 140 liquid UK\" are both common searches. No published study has compared these formats for LGD-4033, RAD-140 or YK-11, so the useful differences are about measurement and keeping the material intact, not about effect.\u003c\/p\u003e\u003cp\u003eIn a capsule the amount is fixed at the filling stage, and a content assay of finished capsules can then confirm it. That only works if a target figure exists; here it is printed on each pot's label. The photographs show one pot per compound rather than a mixed pot, so if the split matters to your records, ask us to confirm it before ordering. A liquid is labelled in milligrams per millilitre; its accuracy then rests on how exactly volumes are measured, whether the compound stays in solution, and whether solvent evaporates from a bottle opened many times, which concentrates what is left.\u003c\/p\u003e\u003cp\u003eNone of the three is a peptide. They are small synthetic molecules, so the objection raised against swallowed peptides, that digestive enzymes break them down (see \u003ca href=\"\/en-ro\/blogs\/news\/do-oral-peptides-work\"\u003edo oral peptides work\u003c\/a\u003e), does not apply in the same way. Both published human trials in this family, for LGD-4033 and for RAD-140, gave the compound by mouth. We are aware of no published human study of any of the three given by injection, and YK-11 has never been given to people in a published study at all.\u003c\/p\u003e\u003ch2\u003eLigandrol compared with ostarine\u003c\/h2\u003e\u003cp\u003eRAD-140 is already covered above, so this section sets ligandrol beside ostarine, a compound not in this bundle.\u003c\/p\u003e\u003ctable\u003e\n\u003cthead\u003e\u003ctr\u003e\n\u003cth\u003ePoint\u003c\/th\u003e\n\u003cth\u003eLigandrol (LGD-4033)\u003c\/th\u003e\n\u003cth\u003eOstarine (MK-2866)\u003c\/th\u003e\n\u003c\/tr\u003e\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003eOther names\u003c\/td\u003e\n\u003ctd\u003eVK5211, anabolicum\u003c\/td\u003e\n\u003ctd\u003eEnobosarm, GTx-024\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eDeveloper\u003c\/td\u003e\n\u003ctd\u003eLigand Pharmaceuticals\u003c\/td\u003e\n\u003ctd\u003eGTx, Inc.\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eFormula and molecular weight\u003c\/td\u003e\n\u003ctd\u003eC14H12F6N2O, 338.25\u003c\/td\u003e\n\u003ctd\u003eC19H14F3N3O3, 389.3\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eCAS number\u003c\/td\u003e\n\u003ctd\u003e1165910-22-4\u003c\/td\u003e\n\u003ctd\u003e841205-47-8\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eTarget\u003c\/td\u003e\n\u003ctd\u003eAndrogen receptor\u003c\/td\u003e\n\u003ctd\u003eAndrogen receptor\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eKey published human trial\u003c\/td\u003e\n\u003ctd\u003e21-day phase I, 76 healthy young men\u003c\/td\u003e\n\u003ctd\u003e12-week phase II, 120 men over 60 and postmenopausal women\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMain recorded findings\u003c\/td\u003e\n\u003ctd\u003eLean body mass rose with dose; fat mass unchanged; testosterone, SHBG and HDL fell\u003c\/td\u003e\n\u003ctd\u003eLean body mass rose with dose versus placebo; adverse events at similar rates across groups\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eApproved as a medicine\u003c\/td\u003e\n\u003ctd\u003eNo\u003c\/td\u003e\n\u003ctd\u003eNo\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eWADA class\u003c\/td\u003e\n\u003ctd\u003eS1, anabolic agents\u003c\/td\u003e\n\u003ctd\u003eS1, anabolic agents\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\u003cp\u003eBoth are non-steroidal and both target the androgen receptor, but they come from different chemical families: ligandrol is built on a fluorinated pyrrolidine ring, while ostarine is an aryl-propionamide with two cyano groups. The trials also asked different questions. The ligandrol study was short and in young men, and its main purpose was tolerability and pharmacokinetics. The ostarine study ran four times longer, in older adults, and was sponsored and run by the developer, which also reported changes in a physical function measure and in insulin resistance (Dalton 2011). Neither trial was designed to show long-term safety, and neither compound has been approved anywhere. Nothing here ranks one compound above the other.\u003c\/p\u003e\u003cp\u003eOstarine brands are compared on the \u003ca href=\"\/en-ro\/collections\/ostarine\"\u003eostarine collection page\u003c\/a\u003e and the \u003ca href=\"\/en-ro\/blogs\/news\/ostarine-mk-2866-research-guide\"\u003eostarine research guide\u003c\/a\u003e covers its trials. For testolone the comparison searched most often is with RAD-150, the benzoate ester sold as TLB-150; see the \u003ca href=\"\/en-ro\/collections\/rad-150\"\u003eRAD-150 collection\u003c\/a\u003e and \u003ca href=\"\/en-ro\/blogs\/news\/rad-140-vs-rad-150-tlb-150\"\u003eRAD-140 vs RAD-150\u003c\/a\u003e.\u003c\/p\u003e\u003ch2\u003eReading the certificate of analysis for this product\u003c\/h2\u003e\u003cp\u003eiMuscle is a third-party brand sold through Muscle Market. For third-party brands we display a certificate of analysis only where the manufacturer supplies one for the exact batch we hold; if none is shown, none has been supplied and we do not substitute a generic document. Free Muscle-brand products, by contrast, are assayed batch by batch at Janoshik Analytical, with the certificate sent on request by email. That Janoshik testing does not extend to iMuscle.\u003c\/p\u003e\u003cp\u003eIf a certificate is available for this bundle, read it field by field:\u003c\/p\u003e\u003col\u003e\n\u003cli\u003e\n\u003cstrong\u003eBatch number.\u003c\/strong\u003e Compare it character by character with the lot code on your pot; the certificate only speaks for that lot.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eIdentity.\u003c\/strong\u003e HPLC compares the retention time of each peak with a reference standard; LC-MS adds a mass reading. The expected molecular weights are 338.25 for LGD-4033, 393.8 for RAD-140 and 430.5 for YK-11. Each compound should have its own result.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePurity.\u003c\/strong\u003e Usually given as the percentage of total peak area on the HPLC trace. With three compounds, check that each is reported separately and that any unknown peaks are listed.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eContent.\u003c\/strong\u003e Milligrams found per capsule. Check it against the label strength of the pot carrying that lot number.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eLaboratory and test date.\u003c\/strong\u003e A named laboratory and a date let the result be traced at source and show how old it is.\u003c\/li\u003e\n\u003c\/ol\u003e\u003cp\u003eA gap on the certificate has a plain meaning here. No certificate for the batch held means nothing independent confirms what the capsules contain. A certificate naming only ligandrol says nothing about testolone or YK-11. Identity without content confirms that a compound is present but not how much. To ask for what we hold, email us via the \u003ca href=\"\/en-ro\/pages\/contact\"\u003econtact page\u003c\/a\u003e with the product name and batch number. Our \u003ca href=\"\/en-ro\/pages\/lab-tests\"\u003elab testing page\u003c\/a\u003e and the guide on \u003ca href=\"\/en-ro\/blogs\/news\/how-to-read-a-certificate-of-analysis\"\u003ehow to read a certificate of analysis\u003c\/a\u003e explain the methods further.\u003c\/p\u003e\u003ch2\u003eDetection, sport and testing\u003c\/h2\u003e\u003cp\u003eLGD-4033, RAD-140 and YK-11 are all on the WADA Prohibited List under S1, anabolic agents, and are banned at all times, in and out of competition. UK Anti-Doping applies that list in the UK. Anti-doping rules work on strict liability: a prohibited substance found in an athlete's sample counts against them regardless of how it got there or what the product label said, so anyone subject to testing should treat this bundle as prohibited.\u003c\/p\u003e\u003cp\u003eAccredited laboratories screen for SARMs and for their urinary metabolites, not only the parent compound. For that reason a blood half-life, such as the 44.7 hours measured for RAD-140 in the oncology trial (LoRusso 2022), is not a detection window. This page cites no study that sets a detection window for any of the three, so the accurate answer for each is: detectable, window not established.\u003c\/p\u003e\u003ch2\u003eStorage, stability and handling\u003c\/h2\u003e\u003cp\u003eNo stability study has been published for capsules of LGD-4033, RAD-140 or YK-11, so we give no shelf life beyond any date iMuscle prints on the pack. What can be controlled is exposure to heat, humidity and light.\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003eKeep the pots sealed, at cool room temperature, in a dry cupboard away from sunlight and radiators.\u003c\/li\u003e\n\u003cli\u003eOpen one pot at a time, reseal it promptly, and keep any moisture-absorbing sachet in with the capsules.\u003c\/li\u003e\n\u003cli\u003eDo not decant capsules into other containers; once separated from the labelled pot they can no longer be tied to a batch number or certificate.\u003c\/li\u003e\n\u003cli\u003eIf shells turn soft, split or change colour, quarantine that pot and send us the batch number.\u003c\/li\u003e\n\u003cli\u003eWear gloves when handling, keep the pots well clear of kitchens, children and pets, and send surplus material for disposal as laboratory chemical waste.\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch2\u003eGlossary\u003c\/h2\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eSARM\u003c\/strong\u003e: selective androgen receptor modulator, a compound designed to activate the androgen receptor in some tissues more than others.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePartial agonist\u003c\/strong\u003e: a compound that activates a receptor but produces a weaker maximum response than the body's own hormone, as reported for YK-11 in cells.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eLean body mass\u003c\/strong\u003e: body weight minus fat, usually measured by a DEXA scan; the main outcome in the ligandrol and ostarine trials.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSHBG\u003c\/strong\u003e: sex hormone-binding globulin, a blood protein that carries testosterone; it fell in the ligandrol trial.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eHDL cholesterol\u003c\/strong\u003e: the lipoprotein fraction usually regarded as protective, which also fell in the ligandrol trial.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eAST and ALT\u003c\/strong\u003e: liver enzymes that rise in the blood when liver cells are damaged.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePhase I and phase II\u003c\/strong\u003e: early clinical trial stages that test tolerability and first signs of an effect, not long-term safety.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eHPLC\u003c\/strong\u003e: high-performance liquid chromatography; a sample is pushed through a packed column and its components emerge at different times as separate peaks.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eLC-MS\u003c\/strong\u003e: a chromatography run coupled to a mass spectrometer, so each separated peak also gets a measured mass, a stronger identity check than retention time alone.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWADA S1\u003c\/strong\u003e: the anabolic agents section of the World Anti-Doping Agency Prohibited List.\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch2\u003eAbout the iMuscle Ligandrol, Testolon and YK-11 stack\u003c\/h2\u003e\u003cp\u003eIn this listing's photographs iMuscle's three pots stand together: light blue LIGANDROL, blue TESTOLON and red YK 11, each with its own printed count and strength. Sold one by one, their labels read 60 capsules, at 8, 10 and 10 mg respectively (\u003ca href=\"\/en-ro\/products\/imuscle-ligandrol-lgd4033-60-8mg\"\u003eLigandrol\u003c\/a\u003e, \u003ca href=\"\/en-ro\/products\/imuscle-testolon-rad-140-60-10mg\"\u003eTestolon\u003c\/a\u003e, \u003ca href=\"\/en-ro\/products\/imuscle-yk-11-60-10mg\"\u003eYK-11\u003c\/a\u003e). If the pot count or figures matter, please have us check the pots actually held before you order.\u003c\/p\u003e\u003cp\u003eiMuscle's Romanian shop sells the trio under the title Ligandrol, Testolon, YK 11. Because the photographs show three separate pots, this stack is not the same thing as the brand's combined series, sold as VENOM, HULKED, COMBAT and MACHINE, where one capsule holds several compounds; that series is not sold here. The \u003ca href=\"\/en-ro\/collections\/brand-imuscle\"\u003eiMuscle brand page\u003c\/a\u003e gathers everything of iMuscle's that we carry.\u003c\/p\u003e\u003cp\u003eLigandrol and testolone are non-steroidal SARMs, each with one published human trial, while YK-11 is a steroidal compound studied only in cells and animals. None is licensed in the UK, YK-11's steroid structure makes its legal position less clear than that of the other two, and all three sit in WADA section S1. Brands of each are compared on the \u003ca href=\"\/en-ro\/collections\/lgd-4033\"\u003eLGD-4033\u003c\/a\u003e, \u003ca href=\"\/en-ro\/collections\/rad-140\"\u003eRAD-140\u003c\/a\u003e and \u003ca href=\"\/en-ro\/collections\/yk-11\"\u003eYK-11\u003c\/a\u003e collections.\u003c\/p\u003e\u003cp\u003eNo test paper appears in this listing's gallery. Each pot comes from its own lot, so check the code on all three and \u003ca href=\"\/en-ro\/pages\/contact\"\u003esend them to us\u003c\/a\u003e; we will forward any certificate iMuscle supplies for those lots. The 2021 documents on the single listings cannot be matched to current stock, and Janoshik testing is limited to Free Muscle's own brand.\u003c\/p\u003e\u003ch2\u003eRelated\u003c\/h2\u003e\u003cul\u003e\n\u003cli\u003e\u003ca href=\"\/en-ro\/collections\/lgd-4033\"\u003eLGD-4033 (Ligandrol) collection\u003c\/a\u003e\u003c\/li\u003e\n\u003cli\u003e\u003ca href=\"\/en-ro\/collections\/rad-140\"\u003eRAD-140 (Testolone) collection\u003c\/a\u003e\u003c\/li\u003e\n\u003cli\u003e\u003ca href=\"\/en-ro\/collections\/yk-11\"\u003eYK-11 collection\u003c\/a\u003e\u003c\/li\u003e\n\u003cli\u003e\u003ca href=\"\/en-ro\/collections\/ostarine\"\u003eOstarine (MK-2866) collection\u003c\/a\u003e\u003c\/li\u003e\n\u003cli\u003e\n\u003ca href=\"\/en-ro\/collections\/brand-imuscle\"\u003eiMuscle brand page\u003c\/a\u003e and \u003ca href=\"\/en-ro\/collections\/market-bundles\"\u003eBundles collection\u003c\/a\u003e\n\u003c\/li\u003e\n\u003cli\u003e\u003ca href=\"\/en-ro\/blogs\/news\/lgd-4033-ligandrol-research-guide\"\u003eLGD-4033 (ligandrol) research guide\u003c\/a\u003e\u003c\/li\u003e\n\u003cli\u003e\u003ca href=\"\/en-ro\/blogs\/news\/rad-140-testolone-what-the-research-says\"\u003eRAD-140 (testolone): what the research says\u003c\/a\u003e\u003c\/li\u003e\n\u003cli\u003e\u003ca href=\"\/en-ro\/blogs\/news\/yk-11-what-is-known\"\u003eYK-11: what is known\u003c\/a\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\u003cp\u003e\u003cem\u003eResearch compounds sold by Free Muscle are supplied for laboratory research use only and are not for human consumption. They are not authorised as medicines by the MHRA, EMA or FDA, are not food supplements, and are sold only to adults aged 18 or over. Nothing on this page is medical or dosing advice. Summaries of published research describe study findings and are not claims about any product.\u003c\/em\u003e\u003c\/p\u003e\u003ch2\u003eReferences\u003c\/h2\u003e\u003col\u003e\n\u003cli\u003eBasaria S, et al. The safety, pharmacokinetics, and effects of LGD-4033, a novel nonsteroidal oral, selective androgen receptor modulator, in healthy young men. J Gerontol A Biol Sci Med Sci. 2013;68(1):87-95. \u003ca href=\"https:\/\/pubmed.ncbi.nlm.nih.gov\/22459616\/\" rel=\"noopener\"\u003ePMID: 22459616\u003c\/a\u003e.\u003c\/li\u003e\n\u003cli\u003eMiller CP, et al. Design, Synthesis, and Preclinical Characterization of the Selective Androgen Receptor Modulator (SARM) RAD140. ACS Med Chem Lett. 2011;2(2):124-9. \u003ca href=\"https:\/\/pubmed.ncbi.nlm.nih.gov\/24900290\/\" rel=\"noopener\"\u003ePMID: 24900290\u003c\/a\u003e.\u003c\/li\u003e\n\u003cli\u003eKanno Y, et al. (17alpha,20E)-17,20-[(1-methoxyethylidene)bis(oxy)]-3-oxo-19-norpregna-4,20-diene-21-carboxylic acid methyl ester (YK11) is a partial agonist of the androgen receptor. Biol Pharm Bull. 2011;34(3):318-23. \u003ca href=\"https:\/\/pubmed.ncbi.nlm.nih.gov\/21372378\/\" rel=\"noopener\"\u003ePMID: 21372378\u003c\/a\u003e.\u003c\/li\u003e\n\u003cli\u003eLoRusso P, et al. A First-in-Human Phase 1 Study of a Novel Selective Androgen Receptor Modulator (SARM), RAD140, in ER+\/HER2- Metastatic Breast Cancer. Clin Breast Cancer. 2022;22(1):67-77. \u003ca href=\"https:\/\/pubmed.ncbi.nlm.nih.gov\/34565686\/\" rel=\"noopener\"\u003ePMID: 34565686\u003c\/a\u003e.\u003c\/li\u003e\n\u003cli\u003eDalton JT, et al. The selective androgen receptor modulator GTx-024 (enobosarm) improves lean body mass and physical function in healthy elderly men and postmenopausal women: results of a double-blind, placebo-controlled phase II trial. J Cachexia Sarcopenia Muscle. 2011;2(3):153-61. \u003ca href=\"https:\/\/pubmed.ncbi.nlm.nih.gov\/22031847\/\" rel=\"noopener\"\u003ePMID: 22031847\u003c\/a\u003e.\u003c\/li\u003e\n\u003cli\u003eBarbara M, et al. Drug-Induced Liver Injury Associated With Alpha Bolic (RAD-140) and Alpha Elite (RAD-140 and LGD-4033). ACG Case Rep J. 2020;7(6):e00409. \u003ca href=\"https:\/\/pubmed.ncbi.nlm.nih.gov\/33062783\/\" rel=\"noopener\"\u003ePMID: 33062783\u003c\/a\u003e.\u003c\/li\u003e\n\u003cli\u003eDahleh MMM, et al. YK11 induces oxidative stress and mitochondrial dysfunction in hippocampus: The interplay between a selective androgen receptor modulator (SARM) and exercise. J Steroid Biochem Mol Biol. 2023;233:106364. \u003ca href=\"https:\/\/pubmed.ncbi.nlm.nih.gov\/37468001\/\" rel=\"noopener\"\u003ePMID: 37468001\u003c\/a\u003e.\u003c\/li\u003e\n\u003c\/ol\u003e","brand":"iMuscle","offers":[{"title":"Default Title","offer_id":48468979843298,"sku":null,"price":117.99,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0772\/3499\/5426\/files\/Combo5_7fdb5057-d6a3-4b23-a7bb-b8cc28b4f448.jpg?v=1789931410"},{"product_id":"imuscle-ostarine-k2866-60-15mg","title":"iMuscle Ostarine MK-2866 — 60 caps, 15mg","description":"\u003cp\u003eiMuscle Ostarine MK-2866 is a pack of 60 capsules stated at 15 mg each, 900 mg of ostarine in total. Ostarine, also known as enobosarm, MK-2866 or GTx-024, is the most clinically studied compound in the SARM class, having reached Phase 3 trials without approval. iMuscle manufactures it and Free Muscle stocks it in the Muscle Market range for research use by adults aged 18 and over.\u003c\/p\u003e\u003ch2\u003eAbout Ostarine (MK-2866)\u003c\/h2\u003e\u003cp\u003eOstarine is a non-steroidal selective androgen receptor modulator developed by GTx Inc. for muscle wasting and, later, for breast cancer.\u003c\/p\u003e\u003cp\u003eA 2011 Phase 2 trial in 120 healthy elderly men and postmenopausal women reported a placebo-adjusted increase in lean body mass of about 1.3 kg at the 3 mg dose over 12 weeks, alongside improved stair-climb performance, and also recorded falls in HDL cholesterol and modest suppression of testosterone (Dalton et al., 2011). A 2013 randomised Phase 2 trial in patients with cancer-related muscle wasting again found increases in lean body mass (Dobs et al., 2013), but the subsequent Phase 3 POWER trials did not meet their co-primary endpoints and enobosarm was not approved. It remains unlicensed as a medicine in every country.\u003c\/p\u003e\u003cp\u003eThe adverse findings carry as much weight as the lean mass figure. In the full 2011 report, HDL cholesterol fell with dose, by 27 per cent at the highest dose; in men, SHBG and total testosterone fell, though free testosterone did not change significantly; and eight participants had transient rises in the liver enzyme ALT, one of whom was withdrawn. Outside trials, physicians at the University of British Columbia described a previously healthy man in his early forties admitted with jaundice after two months of taking ostarine bought online, without medical supervision (Bedi et al., 2021). A liver biopsy showed moderate to severe cholestasis consistent with drug-induced liver injury, and his blood tests improved gradually over the following months. He had also been taking two prescribed medicines, and the report describes no analysis of the product. One case cannot show how often such injury occurs, and no long-term human data exist.\u003c\/p\u003e\u003cp\u003eThe findings above describe the compound in clinical research and case reports and are not claims about this listing. The later breast cancer trial and the wider literature are covered in the \u003ca href=\"\/en-ro\/blogs\/news\/ostarine-mk-2866-research-guide\"\u003eostarine research guide\u003c\/a\u003e.\u003c\/p\u003e\u003ch2\u003eThis listing\u003c\/h2\u003e\u003cul\u003e\n\u003cli\u003eCompound: Ostarine (MK-2866)\u003c\/li\u003e\n\u003cli\u003eBrand: iMuscle\u003c\/li\u003e\n\u003cli\u003eForm: capsules\u003c\/li\u003e\n\u003cli\u003ePack size: 60 capsules\u003c\/li\u003e\n\u003cli\u003eStated strength: 15 mg per capsule (manufacturer's label claim)\u003c\/li\u003e\n\u003cli\u003eStated total per pack: 900 mg\u003c\/li\u003e\n\u003cli\u003eIntended use: laboratory research only, not for human consumption\u003c\/li\u003e\n\u003cli\u003eSold to adults aged 18 and over\u003c\/li\u003e\n\u003c\/ul\u003e\u003cp\u003eThe strength is the manufacturer's label claim; only a batch certificate confirms it. To compare brands of Ostarine, use total milligrams per pack, as explained in \u003ca href=\"\/en-ro\/blogs\/news\/price-per-mg-compare-sarms-peptides\"\u003eprice per milligram\u003c\/a\u003e.\u003c\/p\u003e\u003ch2\u003eOstarine in the UK: buying, legal status and what to check\u003c\/h2\u003e\u003cp\u003eBehind \"ostarine UK\", \"MK 2866 buy UK\" and \"ostarine UK sale\" sit two questions: is buying it here lawful, and what separates one listing from another?\u003c\/p\u003e\u003ch3\u003eThe legal position\u003c\/h3\u003e\u003cp\u003eOstarine is not a licensed medicine in the UK: it has no MHRA marketing authorisation, is not an authorised food supplement, and cannot lawfully be sold for human consumption. It is not a controlled drug under the Misuse of Drugs Act 1971, and Free Muscle supplies it to adults aged 18 or over for laboratory research only. It is prohibited at all times under section S1 (anabolic agents) of the WADA Prohibited List. Buyers are responsible for the rules that apply to them, including any anti-doping code. Background on the class is in \u003ca href=\"\/en-ro\/blogs\/news\/what-are-sarms-the-2026-research-guide\"\u003eWhat are SARMs? The 2026 research guide\u003c\/a\u003e.\u003c\/p\u003e\u003ch3\u003eSix things a UK listing should show\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eLabel figures that can be tested.\u003c\/strong\u003e A strength per capsule and a count, as listed above; without them a listing can be neither checked nor compared.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWho makes it and who sells it.\u003c\/strong\u003e The manufacturer is iMuscle; the seller is FreeMuscle, a business registered in Andorra with UK operations and dispatch in Scunthorpe.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eA lot number that leads to a certificate.\u003c\/strong\u003e The number printed on the pot ties the capsules to an analysis; how this works for iMuscle stock is set out in the certificate section below.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSold for research, to adults.\u003c\/strong\u003e The page gives no directions for use and promises nothing about outcomes, and every buyer must be 18 or over.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eDelivery that can be followed.\u003c\/strong\u003e Every UK order travels free, tracked and in plain packaging; orders placed before 2pm Monday to Friday are processed the same working day, and EU delivery takes 3-7 working days.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eA way back.\u003c\/strong\u003e Unopened items can be returned within 30 days, on the terms given on our \u003ca href=\"\/en-ro\/pages\/shipping\"\u003edelivery\u003c\/a\u003e and \u003ca href=\"\/en-ro\/pages\/guarantee\"\u003eguarantee\u003c\/a\u003e pages.\u003c\/li\u003e\n\u003c\/ul\u003e\u003cp\u003eReviews and \"ostarine UK reddit\" threads can say how fast a parcel arrived, not what the capsules contained; only a laboratory can say that. A longer checklist is in \u003ca href=\"\/en-ro\/blogs\/news\/how-to-choose-a-sarms-supplier-uk-checklist\"\u003ehow to choose a SARMs supplier in the UK\u003c\/a\u003e.\u003c\/p\u003e\u003ch2\u003eCapsules compared with other forms\u003c\/h2\u003e\u003cp\u003e\"Ostarine tablets UK\", \"ostarine capsules UK\" and \"ostarine liquid UK\" are all searched. Ostarine is a small synthetic molecule with a molecular weight of 389.3, not a peptide, so the usual objection to swallowed peptides, breakdown by digestive enzymes, does not apply in the same way (see \u003ca href=\"\/en-ro\/blogs\/news\/do-oral-peptides-work\"\u003edo oral peptides work\u003c\/a\u003e); the Cologne excretion study described below gave it by mouth. The forms differ in how the amount per unit is fixed and how far a certificate can confirm it; no published study has compared them.\u003c\/p\u003e\u003ctable\u003e\n\u003cthead\u003e\u003ctr\u003e\n\u003cth\u003eForm\u003c\/th\u003e\n\u003cth\u003eHow the amount is set\u003c\/th\u003e\n\u003cth\u003eWhat a certificate can confirm\u003c\/th\u003e\n\u003cth\u003eMain weakness\u003c\/th\u003e\n\u003c\/tr\u003e\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003eCapsules (this product)\u003c\/td\u003e\n\u003ctd\u003eA powder blend is filled into shells at manufacture\u003c\/td\u003e\n\u003ctd\u003eMeasured content per capsule against the 15 mg label figure\u003c\/td\u003e\n\u003ctd\u003eUniformity between capsules depends on how well the blend was mixed, which an assay of pooled capsules does not reveal\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eTablets\u003c\/td\u003e\n\u003ctd\u003eA blend is compressed with binders and fillers\u003c\/td\u003e\n\u003ctd\u003eContent per tablet\u003c\/td\u003e\n\u003ctd\u003eThe same reliance on mixing, plus uneven content if tablets are split\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eLiquids\u003c\/td\u003e\n\u003ctd\u003eDissolved to a stated concentration in milligrams per millilitre\u003c\/td\u003e\n\u003ctd\u003eConcentration of the solution on the day it was tested\u003c\/td\u003e\n\u003ctd\u003eThe quantity per millilitre can drift after testing, through inaccurate measuring, the compound coming out of solution, or evaporation from a bottle opened repeatedly\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eLoose powder\u003c\/td\u003e\n\u003ctd\u003eNot portioned at all\u003c\/td\u003e\n\u003ctd\u003eIdentity and purity of the powder\u003c\/td\u003e\n\u003ctd\u003eEvery quantity must be weighed, so accuracy rests on the balance\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\u003cp\u003eNone of this is a claim that one form works better than another; it concerns only how a stated quantity can be verified.\u003c\/p\u003e\u003ch2\u003eOstarine compared with LGD-4033\u003c\/h2\u003e\u003cp\u003e\"Ligandrol vs ostarine\" sets ostarine against another member of its class; \"MK 2866 vs MK 677\", a pairing with an unrelated growth hormone secretagogue, is answered in the questions below. Ostarine and LGD-4033 are both non-steroidal SARMs that activate the androgen receptor, and both began as drug candidates that were never approved.\u003c\/p\u003e\u003ctable\u003e\n\u003cthead\u003e\u003ctr\u003e\n\u003cth\u003eFeature\u003c\/th\u003e\n\u003cth\u003eOstarine (this product)\u003c\/th\u003e\n\u003cth\u003eLGD-4033\u003c\/th\u003e\n\u003c\/tr\u003e\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003eOther names\u003c\/td\u003e\n\u003ctd\u003eEnobosarm, MK-2866, GTx-024\u003c\/td\u003e\n\u003ctd\u003eLigandrol, VK5211\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOriginator\u003c\/td\u003e\n\u003ctd\u003eGTx Inc.\u003c\/td\u003e\n\u003ctd\u003eLigand Pharmaceuticals\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eChemical family\u003c\/td\u003e\n\u003ctd\u003eAryl-propionamide with one stereocentre, the (2S) form\u003c\/td\u003e\n\u003ctd\u003ePyrrolidinyl-benzonitrile with two stereocentres\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eFormula and molecular weight\u003c\/td\u003e\n\u003ctd\u003eC19H14F3N3O3, 389.3\u003c\/td\u003e\n\u003ctd\u003eC14H12F6N2O, 338.25\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eCAS number\u003c\/td\u003e\n\u003ctd\u003e841205-47-8\u003c\/td\u003e\n\u003ctd\u003e1165910-22-4\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eFurthest clinical stage\u003c\/td\u003e\n\u003ctd\u003ePhase 3 (the POWER trials in cancer-related muscle wasting)\u003c\/td\u003e\n\u003ctd\u003ePhase 1: one placebo-controlled trial in 76 healthy men aged 21 to 50, lasting 21 days (2013)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eAdverse findings reported in people\u003c\/td\u003e\n\u003ctd\u003eFalls in HDL cholesterol, SHBG and total testosterone; transient ALT rises; a biopsy-proven case of cholestatic liver injury\u003c\/td\u003e\n\u003ctd\u003eTotal testosterone, SHBG, HDL cholesterol and triglycerides fell as the dose rose; one biopsy-confirmed report of cholestatic liver injury\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eLicensed as a medicine\u003c\/td\u003e\n\u003ctd\u003eNowhere\u003c\/td\u003e\n\u003ctd\u003eNowhere\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eWADA\u003c\/td\u003e\n\u003ctd\u003eS1.2, prohibited at all times\u003c\/td\u003e\n\u003ctd\u003eS1.2, prohibited at all times\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\u003cp\u003eThe table invites a head-to-head reading the evidence cannot support. Ostarine's Phase 2 trials enrolled older adults and people with cancer over roughly twelve to sixteen weeks; the only LGD-4033 trial enrolled young, healthy men for three weeks. No study has given both compounds to comparable participants, so any ranking by strength or tolerability has no trial behind it, and a milligram of one molecule is not equivalent to a milligram of the other.\u003c\/p\u003e\u003cp\u003eWhat they share is status: unlicensed everywhere, sold here for laboratory research only, and prohibited under the same WADA section. Brands of LGD-4033 are compared in the \u003ca href=\"\/en-ro\/collections\/lgd-4033\"\u003eLGD-4033 (Ligandrol) collection\u003c\/a\u003e, and its trial is summarised in \u003ca href=\"\/en-ro\/blogs\/news\/lgd-4033-ligandrol-research-guide\"\u003eLGD-4033 (ligandrol): trials, findings and UK status\u003c\/a\u003e.\u003c\/p\u003e\u003ch2\u003eReading the certificate of analysis for this product\u003c\/h2\u003e\u003cp\u003eiMuscle is a third-party brand, so any certificate of analysis (COA) for this pack is the manufacturer's, not ours. Where iMuscle supplies a COA for the batch we hold, we show it; where none exists for the batch in stock, we say so rather than show a generic document. Free Muscle-brand compounds are assayed batch by batch at Janoshik Analytical; that programme does not cover iMuscle. When a certificate is available, check each field against the table.\u003c\/p\u003e\u003ctable\u003e\n\u003cthead\u003e\u003ctr\u003e\n\u003cth\u003eField\u003c\/th\u003e\n\u003cth\u003eWhat it should show for this product\u003c\/th\u003e\n\u003cth\u003eWhat a gap means\u003c\/th\u003e\n\u003c\/tr\u003e\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003eCompound\u003c\/td\u003e\n\u003ctd\u003eOstarine, enobosarm or MK-2866, ideally with CAS 841205-47-8\u003c\/td\u003e\n\u003ctd\u003eIt does not describe this pot\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eIdentity\u003c\/td\u003e\n\u003ctd\u003eHPLC against a reference standard, or LC-MS showing a mass consistent with C19H14F3N3O3 (molecular weight 389.3)\u003c\/td\u003e\n\u003ctd\u003eWithout identity, a purity figure could belong to a different substance\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eStereochemistry\u003c\/td\u003e\n\u003ctd\u003eThe (2S) form that PubChem records under InChIKey JNGVJMBLXIUVRD-SFHVURJKSA-N\u003c\/td\u003e\n\u003ctd\u003eIts mirror image has the same mass and is resolved only by a chiral method, so a certificate naming none has not addressed it\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003ePurity\u003c\/td\u003e\n\u003ctd\u003eA percentage, usually from HPLC peak area\u003c\/td\u003e\n\u003ctd\u003eNothing is known about impurities or breakdown products\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eContent per capsule\u003c\/td\u003e\n\u003ctd\u003eA measured figure in milligrams to set against the 15 mg label claim\u003c\/td\u003e\n\u003ctd\u003eThe 900 mg per pack stays an untested label claim\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eBatch number\u003c\/td\u003e\n\u003ctd\u003eThe same lot as printed on your pot\u003c\/td\u003e\n\u003ctd\u003eThe certificate describes other stock\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eTest date and laboratory\u003c\/td\u003e\n\u003ctd\u003eA date and a named laboratory that can confirm the report\u003c\/td\u003e\n\u003ctd\u003eThe result cannot be traced\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\u003cp\u003eWhere a field is blank on the certificate for our current batch, ask us through the \u003ca href=\"\/en-ro\/pages\/contact\"\u003econtact page\u003c\/a\u003e what is known before relying on that batch. Further detail is in \u003ca href=\"\/en-ro\/blogs\/news\/how-to-read-a-certificate-of-analysis\"\u003ehow to read a COA\u003c\/a\u003e and on our \u003ca href=\"\/en-ro\/pages\/lab-tests\"\u003elab tests\u003c\/a\u003e page.\u003c\/p\u003e\u003ch2\u003eDetection, sport and testing\u003c\/h2\u003e\u003cp\u003eOstarine is named in section S1.2 (other anabolic agents) of the WADA Prohibited List, banned in and out of competition, and is the SARM most frequently detected in anti-doping analyses. Under strict liability an athlete answers for any prohibited substance in their sample, whatever its source, and supplements contaminated with minute amounts of ostarine have become a major concern for athletes and the authorities that manage results.\u003c\/p\u003e\u003cp\u003eThat concern prompted a controlled study at the German Sport University Cologne, where single and repeated oral amounts of 1, 10 and 50 micrograms of ostarine were given and urine was analysed by LC-MS\/MS (Walpurgis et al., 2020). A single 1 microgram amount could be detected for up to nine days, depending on whether ostarine itself or its glucuronide was the target, while hydroxylated metabolites gave considerably shorter windows. Peak urine levels and detection times rose with the amount given and varied widely between individuals.\u003c\/p\u003e\u003cp\u003eNo verified study we can cite gives a detection window after milligram quantities such as the 15 mg stated per capsule here, so the accurate statement for this product is: detectable, window not established. Because detection time increased with the amount, the microgram figures are not an upper limit. Anyone subject to an anti-doping code should treat any contact with ostarine as a risk of an adverse finding.\u003c\/p\u003e\u003ch2\u003eStorage, stability and handling\u003c\/h2\u003e\u003cp\u003eWe can cite no published stability study of ostarine capsules, so we quote no shelf life. Work to the expiry date on the iMuscle pot; a certificate reflects the batch only on its test date.\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eContainer.\u003c\/strong\u003e Keep the capsules in the original pot, closed fully after each opening; the pot carries the lot number, and decanting into an unlabelled container breaks the link to any certificate.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eConditions.\u003c\/strong\u003e A cool, dry, dark place away from heat and direct sunlight. Kitchens and bathrooms are poor choices, as capsule shells take up moisture and can soften or stick together.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eRecords.\u003c\/strong\u003e Note the lot number and the date the seal was broken, and label any sample taken for analysis with compound, lot and date.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eHandling.\u003c\/strong\u003e Use gloves with opened capsules or loose powder, keep the material away from food and drink and out of reach of children and pets, and dispose of it as chemical waste rather than in household bins or drains.\u003c\/li\u003e\n\u003c\/ul\u003e\u003cp\u003eBreaking the seal also ends the 30-day return option, which applies to unopened items only.\u003c\/p\u003e\u003ch2\u003eGlossary\u003c\/h2\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eEnobosarm\u003c\/strong\u003e: the International Nonproprietary Name for ostarine, used in clinical publications; MK-2866 and GTx-024 are development codes for the same molecule.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSelective androgen receptor modulator (SARM)\u003c\/strong\u003e: a non-steroidal androgen receptor activator whose developers aimed for effects on muscle and bone with less action on the prostate.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eAryl-propionamide\u003c\/strong\u003e: the chemical family ostarine belongs to, which also includes andarine (S-4) and S-23.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eLean body mass\u003c\/strong\u003e: body weight minus fat, measured in the ostarine trials by dual-energy X-ray absorptiometry (DXA); it includes water and organs as well as muscle.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCo-primary endpoint\u003c\/strong\u003e: one of the main outcomes, set in advance, that a trial must meet to count as a success; the POWER trials fell short on theirs.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSHBG\u003c\/strong\u003e: sex hormone-binding globulin, which binds testosterone in the blood, so total testosterone tends to fall when SHBG does.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eALT\u003c\/strong\u003e: alanine aminotransferase, a liver enzyme whose blood level rises when liver cells are damaged.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCholestasis\u003c\/strong\u003e: reduced flow of bile from the liver, which can cause jaundice; the pattern seen in the ostarine case report.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eGlucuronide\u003c\/strong\u003e: a compound joined to glucuronic acid by the body so it can be excreted in urine; anti-doping methods can target it.\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch2\u003eAbout iMuscle Ostabolon (Ostarine MK-2866)\u003c\/h2\u003e\u003cp\u003eAnyone searching for iMuscle ostarine will find the word OSTABOLON on the pot rather than ostarine: it is iMuscle's own trade name, printed large on a yellow label, with MK, 2866 and OSTARINE in a smaller line to identify the compound. The front box gives 60 capsules at 15 mg each, the side panel 15 mg of Ostarine MK 2866 per capsule with a chemical name and the brand's above-97% purity statement, and on imuscle.ro the product appears as Ostarine MK2866, \"60\/15mg\". Our listing carries the same figures, 900 mg per pot.\u003c\/p\u003e\u003cp\u003eOstabolon is one of the nine single pots in iMuscle's standard line, which its About page sets apart from a combined series of multi-compound capsules sold as VENOM, HULKED, COMBAT and MACHINE. We stock the nine singles and eight stacks, not the combined series. This pot is in three of those stacks: \u003ca href=\"\/en-ro\/products\/imuscle-cardarine-ostarine-mk2866\"\u003eCardarine and Ostarine\u003c\/a\u003e, \u003ca href=\"\/en-ro\/products\/imuscle-ostarine-andarine-cardarine\"\u003eOstarine, Andarine and Cardarine\u003c\/a\u003e and \u003ca href=\"\/en-ro\/products\/imuscle-ligandrol-ibutamoren-ostarine\"\u003eLigandrol, Ibutamoren and Ostarine\u003c\/a\u003e. Every listing is on the \u003ca href=\"\/en-ro\/collections\/brand-imuscle\"\u003eiMuscle page\u003c\/a\u003e.\u003c\/p\u003e\u003cp\u003eOf the compounds sold as SARMs, enobosarm went furthest in clinical work, reaching phase 3 trials in cancer-related muscle loss without approval anywhere; it has no UK licence and WADA lists it under S1. iMuscle is the only ostarine brand we stock as of October 2026, and the \u003ca href=\"\/en-ro\/collections\/ostarine\"\u003eostarine collection\u003c\/a\u003e will reflect any change.\u003c\/p\u003e\u003cp\u003eThe test protocol in the gallery, RN18634, and the English HPLC print-out for MK2866 with lot 20210908 both date from 2021, and the protocol has no lot number of its own. iMuscle states that every lot is checked at an independent European laboratory; we have not seen a report for the stock held now. Compare the lot code on your pot with any document, and \u003ca href=\"\/en-ro\/pages\/contact\"\u003eask us\u003c\/a\u003e with that code before relying on a figure.\u003c\/p\u003e\u003ch2\u003eRelated\u003c\/h2\u003e\u003cul\u003e\n\u003cli\u003e\n\u003ca href=\"\/en-ro\/collections\/ostarine\"\u003eAll brands of Ostarine (MK-2866)\u003c\/a\u003e, compared on strength, pack size and batch testing\u003c\/li\u003e\n\u003cli\u003e\u003ca href=\"\/en-ro\/blogs\/news\/ostarine-mk-2866-research-guide\"\u003eOstarine (MK-2866): the most-studied SARM, what trials found\u003c\/a\u003e\u003c\/li\u003e\n\u003cli\u003e\n\u003ca href=\"\/en-ro\/collections\/brand-imuscle\"\u003eAll iMuscle products\u003c\/a\u003e stocked at Free Muscle\u003c\/li\u003e\n\u003cli\u003e\n\u003ca href=\"\/en-ro\/collections\/lgd-4033\"\u003eLGD-4033 (Ligandrol)\u003c\/a\u003e and \u003ca href=\"\/en-ro\/collections\/sarms\"\u003eall SARMs\u003c\/a\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003ca href=\"\/en-ro\/pages\/shipping\"\u003eDelivery\u003c\/a\u003e and \u003ca href=\"\/en-ro\/pages\/guarantee\"\u003ereturns\u003c\/a\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\u003cp\u003e\u003cem\u003eResearch compounds sold by Free Muscle are supplied for laboratory research use only and are not for human consumption. They are not authorised as medicines by the MHRA, EMA or FDA, are not food supplements, and are sold only to adults aged 18 or over. Nothing on this page is medical or dosing advice.\u003c\/em\u003e\u003c\/p\u003e\u003ch2\u003eReferences\u003c\/h2\u003e\u003col\u003e\n\u003cli\u003eDalton JT, et al. The selective androgen receptor modulator GTx-024 (enobosarm) improves lean body mass and physical function in healthy elderly men and postmenopausal women: results of a double-blind, placebo-controlled phase II trial. J Cachexia Sarcopenia Muscle. 2011;2(3):153-161. \u003ca href=\"https:\/\/pubmed.ncbi.nlm.nih.gov\/22031847\/\" rel=\"noopener\"\u003ePMID: 22031847\u003c\/a\u003e.\u003c\/li\u003e\n\u003cli\u003eDobs AS, et al. Effects of enobosarm on muscle wasting and physical function in patients with cancer: a double-blind, randomised controlled phase 2 trial. Lancet Oncol. 2013;14(4):335-45. \u003ca href=\"https:\/\/pubmed.ncbi.nlm.nih.gov\/23499390\/\" rel=\"noopener\"\u003ePMID: 23499390\u003c\/a\u003e.\u003c\/li\u003e\n\u003cli\u003eBedi H, et al. Drug-Induced Liver Injury From Enobosarm (Ostarine), a Selective Androgen Receptor Modulator. ACG Case Rep J. 2021;8(1):e00518. \u003ca href=\"https:\/\/pubmed.ncbi.nlm.nih.gov\/34368386\/\" rel=\"noopener\"\u003ePMID: 34368386\u003c\/a\u003e.\u003c\/li\u003e\n\u003cli\u003eWalpurgis K, et al. Elimination profiles of microdosed ostarine mimicking contaminated products ingestion. Drug Test Anal. 2020;12(11-12):1570-1580. \u003ca href=\"https:\/\/pubmed.ncbi.nlm.nih.gov\/32959982\/\" rel=\"noopener\"\u003ePMID: 32959982\u003c\/a\u003e.\u003c\/li\u003e\n\u003c\/ol\u003e","brand":"iMuscle","offers":[{"title":"Default Title","offer_id":48468980039906,"sku":null,"price":33.99,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0772\/3499\/5426\/files\/OSTABOLON_720x_038c6b35-a391-48d6-a65a-43cf847f030f.jpg?v=1789931412"},{"product_id":"imuscle-ostarine-andarine-cardarine","title":"iMuscle Ostarine + Andarine + Cardarine stack","description":"\u003cp\u003eThe iMuscle Ostarine, Andarine and Cardarine bundle groups three research compounds from one manufacturer into a single listing: ostarine (MK-2866), andarine (S-4) and cardarine (GW-501516). Each compound has its own labelled iMuscle pot in the photographs, and we put no figure on the set until we confirm what the listing ships. Supplied to adults for laboratory research only, not for human consumption.\u003c\/p\u003e\u003cp\u003eA bundle is a listing convenience only: it lets products from one manufacturer be ordered in a single purchase. Nothing on this page claims that they act together or should be studied together, and Free Muscle publishes no stack or cycle guidance for any product.\u003c\/p\u003e\u003ch2\u003eAbout the compounds in this bundle\u003c\/h2\u003e\u003ch3\u003eOstarine (MK-2866, enobosarm)\u003c\/h3\u003e\u003cp\u003eOstarine (MK-2866, enobosarm, GTx-024) is a non-steroidal selective androgen receptor modulator developed for muscle wasting, and one of the most clinically studied SARMs. A 2011 phase II trial in healthy older adults reported more lean body mass than placebo over twelve weeks, alongside dose-related falls in HDL cholesterol and, in men, lower SHBG and total testosterone. Phase III cancer cachexia trials reported lean mass gains but missed their physical function endpoints, and it was never approved. WADA class S1. Compare brands on the \u003ca href=\"\/en-ro\/collections\/ostarine\"\u003eOstarine (MK-2866, enobosarm) collection page\u003c\/a\u003e.\u003c\/p\u003e\u003ch3\u003eAndarine (S-4)\u003c\/h3\u003e\u003cp\u003eAndarine (S-4, GTx-007) is an earlier aryl-propionamide SARM from the same programme as ostarine. Its evidence is preclinical: in ovariectomised rats it prevented bone loss and reduced body fat in a 2007 study. No controlled human trial has been published and no regulator has approved it. WADA class S1. Compare brands on the \u003ca href=\"\/en-ro\/collections\/andarine\"\u003eAndarine (S-4) collection page\u003c\/a\u003e.\u003c\/p\u003e\u003ch3\u003eCardarine (GW-501516)\u003c\/h3\u003e\u003cp\u003eCardarine (GW-501516, endurobol) is not a SARM but an agonist at the PPAR-delta nuclear receptor, which regulates fatty-acid oxidation genes. In a small two-week 2007 study of 24 healthy volunteers, HDL cholesterol rose relative to placebo and fat clearance after a test meal improved, while fasting triglycerides only trended lower. Development was later discontinued after long-term rodent toxicology studies reportedly found tumours in several organs, a sponsor-reported finding that ended further human work. Never approved; prohibited by WADA as a metabolic modulator under section S4. Compare brands on the \u003ca href=\"\/en-ro\/collections\/cardarine\"\u003eCardarine (GW-501516) collection page\u003c\/a\u003e.\u003c\/p\u003e\u003cp\u003eThese summaries describe what was measured in trial participants and laboratory animals. None of it is a claim about the capsules in this bundle.\u003c\/p\u003e\u003ch2\u003eThis listing\u003c\/h2\u003e\u003cul\u003e\n\u003cli\u003eBrand: iMuscle (third-party brand, Muscle Market)\u003c\/li\u003e\n\u003cli\u003eCompounds: ostarine (MK-2866), andarine (S-4), cardarine (GW-501516)\u003c\/li\u003e\n\u003cli\u003eForm and pack: capsules; the photographs show three iMuscle pots, each marked 60 capsules, and we confirm what the listing ships on request\u003c\/li\u003e\n\u003cli\u003eStrength: from the labels of the singles, 15 mg (ostarine), 15 mg (andarine) and 10 mg (cardarine) per capsule; no figure is stated for the set\u003c\/li\u003e\n\u003cli\u003eCOA: only where iMuscle supplies one for the batch held\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch2\u003eOstarine, andarine and cardarine in the UK: buying, legal status and what to check\u003c\/h2\u003e\u003cp\u003eSearches such as \"ostarine UK buy\", \"cardarine UK legal\" and \"andarine UK\" reduce to two questions. Can these compounds lawfully change hands in Britain, and how can a buyer tell a checkable listing from one that asks to be taken on trust?\u003c\/p\u003e\u003ch3\u003eWhere the law stands\u003c\/h3\u003e\u003cp\u003eNone of the three appears in the schedules of the Misuse of Drugs Act 1971, so none is a controlled drug. None holds a UK marketing authorisation from the MHRA, so none may be sold or promoted as a medicine, and none is an authorised food supplement or novel food, so none may be sold for eating. What remains is supply as a chemical for laboratory research, to adults, with no directions for use and no promised outcome. That is the only basis on which Free Muscle lists this bundle. In sport the position is stricter: ostarine and andarine are prohibited at all times under WADA section S1, and cardarine under section S4.\u003c\/p\u003e\u003ch3\u003eWhy the listing matters more than the compound name\u003c\/h3\u003e\u003cp\u003eA 2017 study in \u003cem\u003eJAMA\u003c\/em\u003e bought 44 products sold online as SARMs and analysed them with methods accredited for anti-doping work (Van Wagoner et al., 2017). Only 23 contained a SARM at all. A further 17 contained another unapproved drug, among them GW501516 and SR9009; four contained no active compound; eleven held something not named on the label; and in just 18 did the measured amount match the label. The lesson for this bundle is direct: the name on a pot is a claim, and only an analysis of the lot tests it.\u003c\/p\u003e\u003ch3\u003eWhat a checkable UK listing shows, and where this one stands\u003c\/h3\u003e\u003ctable\u003e\n\u003cthead\u003e\u003ctr\u003e\n\u003cth\u003eCheck\u003c\/th\u003e\n\u003cth\u003eThis bundle\u003c\/th\u003e\n\u003c\/tr\u003e\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003eNamed manufacturer and named seller\u003c\/td\u003e\n\u003ctd\u003eMade by iMuscle; sold by FreeMuscle, a business registered in Andorra, and dispatched from Scunthorpe\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eA stated strength for each compound\u003c\/td\u003e\n\u003ctd\u003eGiven on each pot's label; a total for the set waits until we confirm what the listing ships\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eA certificate tied to the lot in stock\u003c\/td\u003e\n\u003ctd\u003eShown only where iMuscle supplies one for the batch held\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eNo directions for use or outcome claims\u003c\/td\u003e\n\u003ctd\u003eNone given; research use only, 18 and over\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eTracked, discreet delivery\u003c\/td\u003e\n\u003ctd\u003eFree tracked UK delivery in plain packaging; orders before 2pm Monday to Friday processed the same working day; EU delivery in 3-7 working days\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eA returns route\u003c\/td\u003e\n\u003ctd\u003eUnopened items within 30 days, see \u003ca href=\"\/en-ro\/pages\/shipping\"\u003edelivery\u003c\/a\u003e and \u003ca href=\"\/en-ro\/pages\/guarantee\"\u003eguarantee\u003c\/a\u003e\n\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\u003cp\u003eThis bundle meets the seller-side checks but not the strength check, because the manufacturer has not published one; the single-compound listings in each collection are the alternative where a stated strength matters. Reviews can report delivery times, not what a capsule contains. A fuller checklist is in \u003ca href=\"\/en-ro\/blogs\/news\/how-to-choose-a-sarms-supplier-uk-checklist\"\u003ehow to choose a SARMs supplier in the UK\u003c\/a\u003e, and the class is introduced in \u003ca href=\"\/en-ro\/blogs\/news\/what-are-sarms-the-2026-research-guide\"\u003eWhat are SARMs? The 2026 research guide\u003c\/a\u003e.\u003c\/p\u003e\u003ch2\u003eCapsules compared with other forms\u003c\/h2\u003e\u003cp\u003eAll three compounds are also sold as liquids and loose powders, hence searches such as \"ostarine liquid UK\". The chemistry does not change with the format; what changes is where the amount per unit is fixed and how it can be checked.\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eCapsules.\u003c\/strong\u003e The amount is set when powder is filled into shells, before the container is sealed, so a certificate can report a measured figure per capsule. Its blind spot is variation from one capsule to the next, which a pooled assay averages away.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eLiquids.\u003c\/strong\u003e The label gives a concentration, so every portion depends on the accuracy of a dropper or syringe. Solvent loss from a bottle opened often raises the concentration, and a compound held near its solubility limit can settle out in the cold. A certificate for a liquid describes the bottle only as it was when sampled.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eLoose powder.\u003c\/strong\u003e Nothing is portioned in advance, so accuracy rests entirely on the balance used to weigh it.\u003c\/li\u003e\n\u003c\/ul\u003e\u003cp\u003eNone of the three is a peptide. Ostarine (molecular weight 389.3), andarine (441.4) and cardarine (453.5) are small synthetic molecules, so the usual objection to swallowed peptides, breakdown by digestive enzymes, does not apply to them in the same way; the background is in \u003ca href=\"\/en-ro\/blogs\/news\/do-oral-peptides-work\"\u003edo oral peptides work\u003c\/a\u003e. No published study compares formats for any of the three, so nothing here suggests one format works better than another. A capsule with a stated strength is simply the easiest format to verify, and this bundle lacks one.\u003c\/p\u003e\u003ch2\u003eCardarine compared with SR9009 (stenabolic)\u003c\/h2\u003e\u003cp\u003e\"Stenabolic vs cardarine\" is the comparison searched most often for the one non-SARM in this bundle. The two are often mistaken for relatives, but they act on different receptors and have very different evidence behind them.\u003c\/p\u003e\u003ctable\u003e\n\u003cthead\u003e\u003ctr\u003e\n\u003cth\u003eFeature\u003c\/th\u003e\n\u003cth\u003eCardarine (in this bundle)\u003c\/th\u003e\n\u003cth\u003eSR9009\u003c\/th\u003e\n\u003c\/tr\u003e\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003eOther names\u003c\/td\u003e\n\u003ctd\u003eGW-501516, GW1516, endurobol\u003c\/td\u003e\n\u003ctd\u003eStenabolic, SR-9009\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eTarget\u003c\/td\u003e\n\u003ctd\u003ePPAR-delta, a nuclear receptor controlling genes for fatty-acid use\u003c\/td\u003e\n\u003ctd\u003eREV-ERB alpha and beta, nuclear receptors in the circadian clock\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOrigin\u003c\/td\u003e\n\u003ctd\u003eA drug-development programme at Glaxo Wellcome, later GlaxoSmithKline\u003c\/td\u003e\n\u003ctd\u003eA laboratory probe from the Scripps Research Institute, first described in 2012\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eHuman data\u003c\/td\u003e\n\u003ctd\u003eSmall, short controlled studies in volunteers, including the two-week 2007 lipid study\u003c\/td\u003e\n\u003ctd\u003eNo clinical study; almost all data from injected mice and cultured cells\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eReason development stopped\u003c\/td\u003e\n\u003ctd\u003eTumours in long-term rodent toxicology studies\u003c\/td\u003e\n\u003ctd\u003eNever entered clinical development\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eLicensed as a medicine\u003c\/td\u003e\n\u003ctd\u003eNowhere\u003c\/td\u003e\n\u003ctd\u003eNowhere\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eWADA\u003c\/td\u003e\n\u003ctd\u003eS4, metabolic modulators (PPAR-delta agonists), prohibited at all times\u003c\/td\u003e\n\u003ctd\u003eS4, metabolic modulators (listed as an example of an AMPK activator), prohibited at all times\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\u003cp\u003eThe practical difference is the depth of the record. Cardarine reached people under trial conditions, so there are measured lipid changes and a documented reason for its abandonment. SR9009 has neither: its reputation as an \"exercise mimetic\" rests on mouse work, and its oral bioavailability in humans has not been established. No study has compared the two directly. They do meet in two places. The 2017 \u003cem\u003eJAMA\u003c\/em\u003e analysis found both inside products labelled as SARMs, and both fall under the same WADA section. The development history of cardarine is covered in \u003ca href=\"\/en-ro\/blogs\/news\/cardarine-gw-501516-what-happened-in-development\"\u003ecardarine: what happened in development\u003c\/a\u003e; SR9009 brands are listed in the \u003ca href=\"\/en-ro\/collections\/sr9009\"\u003eSR9009 collection\u003c\/a\u003e and explained in the \u003ca href=\"\/en-ro\/blogs\/news\/sr9009-stenabolic-research-guide\"\u003eSR9009 research guide\u003c\/a\u003e.\u003c\/p\u003e\u003cp\u003eFor the two SARMs in the bundle, the searched comparisons are \"andarine vs ostarine\" and \"ligandrol vs ostarine\". The first is set out on the \u003ca href=\"\/en-ro\/products\/imuscle-andarine-s4-60-15mg\"\u003eiMuscle Andarine S-4\u003c\/a\u003e page and the second on the \u003ca href=\"\/en-ro\/products\/imuscle-ostarine-k2866-60-15mg\"\u003eiMuscle Ostarine MK-2866\u003c\/a\u003e page, with LGD-4033 brands in the \u003ca href=\"\/en-ro\/collections\/lgd-4033\"\u003eLGD-4033 collection\u003c\/a\u003e.\u003c\/p\u003e\u003ch2\u003eReading the certificate of analysis for this product\u003c\/h2\u003e\u003cp\u003eiMuscle is a third-party brand, so any certificate of analysis (COA) for this bundle is the manufacturer's. We display one only where iMuscle supplies it for the exact batch we hold, and we never substitute a generic document. Free Muscle-brand products are assayed batch by batch at Janoshik Analytical, with the certificate emailed on request; that programme does not extend to iMuscle. A bundle raises one extra point: three compounds means three identities to confirm, normally on three certificates, one per lot.\u003c\/p\u003e\u003ctable\u003e\n\u003cthead\u003e\u003ctr\u003e\n\u003cth\u003eCompound\u003c\/th\u003e\n\u003cth\u003eCAS\u003c\/th\u003e\n\u003cth\u003eFormula and molecular weight\u003c\/th\u003e\n\u003cth\u003eStereochemistry to check\u003c\/th\u003e\n\u003c\/tr\u003e\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003eOstarine\u003c\/td\u003e\n\u003ctd\u003e841205-47-8\u003c\/td\u003e\n\u003ctd\u003eC19H14F3N3O3, 389.3\u003c\/td\u003e\n\u003ctd\u003eThe (2S) form; its mirror image has the same mass\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eAndarine\u003c\/td\u003e\n\u003ctd\u003e401900-40-1\u003c\/td\u003e\n\u003ctd\u003eC19H18F3N3O6, 441.4\u003c\/td\u003e\n\u003ctd\u003eThe (2S) form; same issue as ostarine\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eCardarine\u003c\/td\u003e\n\u003ctd\u003e317318-70-0\u003c\/td\u003e\n\u003ctd\u003eC21H18F3NO3S2, 453.5\u003c\/td\u003e\n\u003ctd\u003eNone; the molecule has no stereocentre\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\u003cp\u003eOn each certificate, look for these fields:\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eIdentity.\u003c\/strong\u003e HPLC against a reference standard, or LC-MS giving a mass that fits the formula above. Without it, a purity figure could belong to a different substance.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePurity.\u003c\/strong\u003e Usually an HPLC peak-area percentage. It shows what share of the detected material is the named compound, not how many milligrams a capsule holds.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eContent per capsule.\u003c\/strong\u003e A measured milligram figure. For this bundle there is no label strength to compare it with, so the certificate would be the first statement of strength rather than a check on one.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eBatch number, test date and laboratory.\u003c\/strong\u003e The lot on the certificate must match the lot on the container, and a named laboratory can be asked to confirm the report is genuine.\u003c\/li\u003e\n\u003c\/ul\u003e\u003cp\u003eIf any field is missing, the matching question stays open. \u003ca href=\"\/en-ro\/pages\/contact\"\u003eContact us\u003c\/a\u003e with the lot numbers and we will say what documentation exists. Further detail is in \u003ca href=\"\/en-ro\/blogs\/news\/how-to-read-a-certificate-of-analysis\"\u003ehow to read a COA\u003c\/a\u003e and on our \u003ca href=\"\/en-ro\/pages\/lab-tests\"\u003elab tests\u003c\/a\u003e page.\u003c\/p\u003e\u003ch2\u003eDetection, sport and testing\u003c\/h2\u003e\u003cp\u003eAll three compounds are on the WADA Prohibited List and banned in and out of competition. Ostarine and andarine sit in section S1.2, other anabolic agents. Cardarine has been on the list since January 2009, first as a gene doping substance and now in section S4 among metabolic modulators (Kintz et al., 2020). Anti-doping rules apply strict liability, so an athlete answers for any prohibited substance found in a sample whatever its source, including a mislabelled product.\u003c\/p\u003e\u003cp\u003eAccredited anti-doping laboratories screen urine for all three, and hair analysis can in principle reach further back. In 2020, forensic toxicologists in Strasbourg reported the first identification of GW501516 in human hair, at 32 and 22 pg\/mg in two consecutive 2 cm segments from one male user, and noted that this was not expected for a molecule carrying a carboxylic acid group (Kintz et al., 2020).\u003c\/p\u003e\u003cp\u003eWhat no verified study gives is a detection window after capsules like these, whose strength is not even stated. For every compound in this bundle, the accurate position is: detectable, window not established. Anyone bound by an anti-doping code should treat any contact with these compounds as a risk of an adverse finding.\u003c\/p\u003e\u003ch2\u003eStorage, stability and handling\u003c\/h2\u003e\u003cp\u003eWe can cite no published shelf-life study for ostarine, andarine or cardarine in capsule form, so we quote no shelf life. Work to the expiry date printed on each iMuscle container, and remember that a certificate describes a batch only on its test date.\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eKeep the products apart.\u003c\/strong\u003e Leave each compound in its own labelled container. Capsules of different compounds can look alike, and once mixed or decanted they can no longer be matched to a lot number or a certificate.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCool, dry and dark.\u003c\/strong\u003e A closed cupboard away from radiators, ovens and sunny windowsills. Close the lid after every opening; capsule shells take up moisture, so bathrooms and kitchens are poor places for them.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eRecord as you go.\u003c\/strong\u003e Note each lot number and the date its seal was broken. Label any sample taken for analysis with compound, lot and date.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eHandle as laboratory chemicals.\u003c\/strong\u003e Gloves for opened capsules or powder, no food or drink nearby, out of reach of children and pets, and disposal as chemical waste under local rules rather than in household bins or drains.\u003c\/li\u003e\n\u003c\/ul\u003e\u003cp\u003eOpening a container also ends the 30-day return option, which applies to unopened items only.\u003c\/p\u003e\u003ch2\u003eGlossary\u003c\/h2\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eSARM\u003c\/strong\u003e: selective androgen receptor modulator, a non-steroidal compound that activates the androgen receptor; ostarine and andarine are SARMs, cardarine is not.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eAryl-propionamide\u003c\/strong\u003e: the chemical family shared by ostarine and andarine.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePPAR-delta\u003c\/strong\u003e: peroxisome proliferator-activated receptor delta, the nuclear receptor cardarine binds.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eREV-ERB\u003c\/strong\u003e: a pair of circadian clock receptors targeted by SR9009, unrelated to PPAR-delta.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMetabolic modulator\u003c\/strong\u003e: the WADA category in section S4 that covers PPAR-delta agonists and AMPK activators.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCachexia\u003c\/strong\u003e: the muscle and weight loss that accompanies cancer and other chronic illness, the condition ostarine's phase III trials targeted.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eStereocentre\u003c\/strong\u003e: an atom that allows two mirror-image forms of a molecule; ostarine and andarine each have one, cardarine has none.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eHPLC and LC-MS\u003c\/strong\u003e: liquid chromatography, alone or linked to mass spectrometry, used to identify a compound and measure its purity.\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch2\u003eAbout the iMuscle Ostarine, Andarine and Cardarine stack\u003c\/h2\u003e\u003cp\u003eThree iMuscle pots make up the photographs on this listing: yellow OSTABOLON, which is the brand's name for ostarine, orange ANDARINE S4 and green CARDARINE. Each label carries its own capsule count and strength, and the single pots are labelled 60 capsules at 15 mg, 15 mg and 10 mg (\u003ca href=\"\/en-ro\/products\/imuscle-ostarine-k2866-60-15mg\"\u003eOstabolon\u003c\/a\u003e, \u003ca href=\"\/en-ro\/products\/imuscle-andarine-s4-60-15mg\"\u003eAndarine S-4\u003c\/a\u003e, \u003ca href=\"\/en-ro\/products\/imuscle-cardarine-gw501516-60-10mg\"\u003eCardarine\u003c\/a\u003e). Have us confirm what the listing ships before you order; this page quotes no total for the stack.\u003c\/p\u003e\u003cp\u003eThe brand offers the same three on its Romanian shop as Ostarine, Andarine, Cardarine. iMuscle runs shops in several European countries and describes its range as a standard line of nine single compounds plus a combined series; we carry the nine singles and eight stacks but not the combined capsules. Find them all on the \u003ca href=\"\/en-ro\/collections\/brand-imuscle\"\u003eiMuscle brand page\u003c\/a\u003e.\u003c\/p\u003e\u003cp\u003eOstarine and andarine are both non-steroidal SARMs of the aryl-propionamide type, ostarine with phase 3 trials behind it and andarine with animal data only; cardarine is a PPAR-delta agonist abandoned after rodent cancer findings. None holds a UK licence; WADA lists the SARMs under S1 and cardarine under S4. The \u003ca href=\"\/en-ro\/collections\/ostarine\"\u003eostarine\u003c\/a\u003e, \u003ca href=\"\/en-ro\/collections\/andarine\"\u003eandarine\u003c\/a\u003e and \u003ca href=\"\/en-ro\/collections\/cardarine\"\u003ecardarine\u003c\/a\u003e collections compare brands.\u003c\/p\u003e\u003cp\u003eTo check the batch of each pot, read the three lot codes, compare each with any certificate offered, and \u003ca href=\"\/en-ro\/pages\/contact\"\u003econtact us\u003c\/a\u003e with all of them. The 2021 papers on the ostarine and andarine single listings cannot be matched to current lots, the cardarine single shows none, and Janoshik testing covers Free Muscle's own brand only.\u003c\/p\u003e\u003ch2\u003eRelated\u003c\/h2\u003e\u003cul\u003e\n\u003cli\u003e\n\u003ca href=\"\/en-ro\/collections\/ostarine\"\u003eOstarine (MK-2866) collection\u003c\/a\u003e and the \u003ca href=\"\/en-ro\/blogs\/news\/ostarine-mk-2866-research-guide\"\u003eostarine research guide\u003c\/a\u003e\n\u003c\/li\u003e\n\u003cli\u003e\u003ca href=\"\/en-ro\/collections\/andarine\"\u003eAndarine (S-4) collection\u003c\/a\u003e\u003c\/li\u003e\n\u003cli\u003e\u003ca href=\"\/en-ro\/collections\/cardarine\"\u003eCardarine (GW-501516) collection\u003c\/a\u003e\u003c\/li\u003e\n\u003cli\u003e\n\u003ca href=\"\/en-ro\/collections\/sr9009\"\u003eSR9009 collection\u003c\/a\u003e and \u003ca href=\"\/en-ro\/collections\/sarms\"\u003eall SARMs\u003c\/a\u003e\n\u003c\/li\u003e\n\u003cli\u003e\u003ca href=\"\/en-ro\/collections\/brand-imuscle\"\u003eiMuscle brand page\u003c\/a\u003e\u003c\/li\u003e\n\u003cli\u003e\u003ca href=\"\/en-ro\/collections\/market-bundles\"\u003eBundles collection\u003c\/a\u003e\u003c\/li\u003e\n\u003cli\u003e\u003ca href=\"\/en-ro\/blogs\/news\/price-per-mg-compare-sarms-peptides\"\u003eComparing listings by price per milligram\u003c\/a\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\u003cp\u003e\u003cem\u003eResearch compounds sold by Free Muscle are supplied for laboratory research use only and are not for human consumption. They are not authorised as medicines by the MHRA, EMA or FDA, are not food supplements, and are sold only to adults aged 18 or over. Nothing on this page is medical or dosing advice. Summaries of published research describe study findings and are not claims about any product.\u003c\/em\u003e\u003c\/p\u003e\u003ch2\u003eReferences\u003c\/h2\u003e\u003col\u003e\n\u003cli\u003eDalton JT, et al. The selective androgen receptor modulator GTx-024 (enobosarm) improves lean body mass and physical function in healthy elderly men and postmenopausal women: results of a double-blind, placebo-controlled phase II trial. J Cachexia Sarcopenia Muscle. 2011;2(3):153-161. \u003ca href=\"https:\/\/pubmed.ncbi.nlm.nih.gov\/22031847\/\" rel=\"noopener\"\u003ePMID: 22031847\u003c\/a\u003e.\u003c\/li\u003e\n\u003cli\u003eKearbey JD, et al. Selective Androgen Receptor Modulator (SARM) treatment prevents bone loss and reduces body fat in ovariectomized rats. Pharm Res. 2007;24(2):328-35. \u003ca href=\"https:\/\/pubmed.ncbi.nlm.nih.gov\/17063395\/\" rel=\"noopener\"\u003ePMID: 17063395\u003c\/a\u003e.\u003c\/li\u003e\n\u003cli\u003eSprecher DL, et al. Triglyceride:high-density lipoprotein cholesterol effects in healthy subjects administered a peroxisome proliferator activated receptor delta agonist. Arterioscler Thromb Vasc Biol. 2007;27(2):359-65. \u003ca href=\"https:\/\/pubmed.ncbi.nlm.nih.gov\/17110604\/\" rel=\"noopener\"\u003ePMID: 17110604\u003c\/a\u003e.\u003c\/li\u003e\n\u003cli\u003eVan Wagoner RM, et al. Chemical Composition and Labeling of Substances Marketed as Selective Androgen Receptor Modulators and Sold via the Internet. JAMA. 2017;318(20):2004-2010. \u003ca href=\"https:\/\/pubmed.ncbi.nlm.nih.gov\/29183075\/\" rel=\"noopener\"\u003ePMID: 29183075\u003c\/a\u003e.\u003c\/li\u003e\n\u003cli\u003eKintz P, et al. Testing for GW501516 (cardarine) in human hair using LC\/MS-MS and confirmation by LC\/HRMS. Drug Test Anal. 2020;12(7):980-986. \u003ca href=\"https:\/\/pubmed.ncbi.nlm.nih.gov\/32298044\/\" rel=\"noopener\"\u003ePMID: 32298044\u003c\/a\u003e.\u003c\/li\u003e\n\u003c\/ol\u003e","brand":"iMuscle","offers":[{"title":"Default Title","offer_id":48468980105442,"sku":null,"price":95.99,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0772\/3499\/5426\/files\/Combo8.jpg?v=1789931413"},{"product_id":"imuscle-s-23-60-15mg","title":"iMuscle S-23 — 60 caps, 15mg","description":"\u003cp\u003eiMuscle S-23 is a pack of 60 capsules stated at 15 mg each, 900 mg of S-23 in total. S-23 is a potent non-steroidal selective androgen receptor modulator that was studied in rats as a candidate for hormonal male contraception. It has never been tested in a published clinical trial; the only human data come from anti-doping excretion studies. Free Muscle stocks this iMuscle product through Muscle Market for laboratory research by adults aged 18 and over.\u003c\/p\u003e\u003ch2\u003eAbout S-23\u003c\/h2\u003e\u003cp\u003eS-23 is a non-steroidal selective androgen receptor modulator from the same aryl-propionamide family as andarine and ostarine. It was investigated not for muscle wasting but as a candidate for hormonal male contraception, because of how effectively it suppressed the pituitary-gonadal axis in animals.\u003c\/p\u003e\u003cp\u003eThe key paper is a 2009 preclinical characterisation in rats (Jones et al., 2009). S-23 bound the androgen receptor with an inhibitory constant of about 1.7 nanomolar and behaved as a full agonist in cell assays. In the animals it increased levator ani muscle weight and, when combined with an oestrogen, suppressed spermatogenesis and produced infertility that reversed once treatment stopped. The same work recorded a strong decrease in luteinising hormone and follicle-stimulating hormone. In castrated rats it acted on the prostate as well as on muscle, though at higher amounts, while in intact rats prostate size fell as luteinising hormone was suppressed. No clinical trial of S-23 has been published, and no clinical development has been reported. Its suppressive effect on the animals' own reproductive hormones is therefore its best-documented property. These rodent findings are not claims about this listing.\u003c\/p\u003e\u003ch3\u003eName and chemical identity\u003c\/h3\u003e\u003cp\u003eS-23 never reached clinical development, so it is known only by its series code, also written S23, and is easily confused with S-22 (an early code for ostarine) and S-4 (andarine). A certificate for this pack should match these PubChem identifiers:\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eSystematic name\u003c\/strong\u003e: (2S)-3-(4-chloro-3-fluorophenoxy)-N-[4-cyano-3-(trifluoromethyl)phenyl]-2-hydroxy-2-methylpropanamide\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCAS number\u003c\/strong\u003e: 1010396-29-8\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFormula and molecular weight\u003c\/strong\u003e: C18H13ClF4N2O3, 416.8 g\/mol\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eInChIKey\u003c\/strong\u003e: SSFVOEAXHZGTRJ-KRWDZBQOSA-N\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePubChem CID\u003c\/strong\u003e: 24892822\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch2\u003eThis listing\u003c\/h2\u003e\u003cul\u003e\n\u003cli\u003eCompound: S-23\u003c\/li\u003e\n\u003cli\u003eBrand: iMuscle\u003c\/li\u003e\n\u003cli\u003eForm: capsules\u003c\/li\u003e\n\u003cli\u003ePack size: 60 capsules\u003c\/li\u003e\n\u003cli\u003eStated strength: 15 mg per capsule (manufacturer's label claim)\u003c\/li\u003e\n\u003cli\u003eStated total per pack: 900 mg\u003c\/li\u003e\n\u003cli\u003eIntended use: laboratory research only, not for human consumption\u003c\/li\u003e\n\u003cli\u003eSold to adults aged 18 and over\u003c\/li\u003e\n\u003c\/ul\u003e\u003cp\u003eThe strength is the manufacturer's label claim; only a batch certificate confirms it. To compare brands of S-23, use total milligrams per pack, as explained in \u003ca href=\"\/en-ro\/blogs\/news\/price-per-mg-compare-sarms-peptides\"\u003eprice per milligram\u003c\/a\u003e.\u003c\/p\u003e\u003ch2\u003eS-23 in the UK: buying, legal status and what to check\u003c\/h2\u003e\u003cp\u003eSearches such as \"S23 SARM UK\" and \"S-23 SARM for sale\" ask two things: whether S-23 can be bought lawfully in Britain, and how to tell a listing that can be checked from one that must be taken on trust.\u003c\/p\u003e\u003ch3\u003eThe legal position\u003c\/h3\u003e\u003cp\u003eS-23 is not a licensed medicine in the UK: it has no MHRA marketing authorisation, and no regulator anywhere has granted one. Nor is it an authorised food supplement, so it cannot lawfully be sold for human consumption, although it is not a controlled substance. Free Muscle supplies it to adults aged 18 or over for laboratory research only. WADA prohibits it at all times under section S1 (anabolic agents) of its Prohibited List. Buyers are responsible for the rules that bind them, including any anti-doping code and, for EU orders, local import rules. The wider class is covered in \u003ca href=\"\/en-ro\/blogs\/news\/what-are-sarms-the-2026-research-guide\"\u003eWhat are SARMs? The 2026 research guide\u003c\/a\u003e.\u003c\/p\u003e\u003ch3\u003eWhat a listing should show, and what this one shows\u003c\/h3\u003e\u003ctable\u003e\n\u003cthead\u003e\u003ctr\u003e\n\u003cth\u003eCheck\u003c\/th\u003e\n\u003cth\u003eWhy it matters for S-23\u003c\/th\u003e\n\u003cth\u003eThis listing\u003c\/th\u003e\n\u003c\/tr\u003e\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003eCompound named precisely\u003c\/td\u003e\n\u003ctd\u003eA certificate can only be matched to an exact name\u003c\/td\u003e\n\u003ctd\u003eS-23, with the identifiers above\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eStrength and capsule count\u003c\/td\u003e\n\u003ctd\u003eNeeded for a pack total and a price per milligram\u003c\/td\u003e\n\u003ctd\u003e15 mg by 60 capsules, 900 mg per pack (label claim)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eCertificate for the batch sold\u003c\/td\u003e\n\u003ctd\u003eThe only evidence of what the capsules contain\u003c\/td\u003e\n\u003ctd\u003eShown only where iMuscle supplies one for the batch we hold; otherwise we say none exists\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eA named seller\u003c\/td\u003e\n\u003ctd\u003eSomeone accountable for the sale\u003c\/td\u003e\n\u003ctd\u003eFreeMuscle, a business registered in Andorra, with UK operations and dispatch in Scunthorpe\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eResearch-only terms\u003c\/td\u003e\n\u003ctd\u003eDirections or promised results signal a sale for consumption\u003c\/td\u003e\n\u003ctd\u003eLaboratory research, adults 18+, no directions or outcome claims\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eDelivery and returns\u003c\/td\u003e\n\u003ctd\u003eShows who holds the parcel, and on what terms\u003c\/td\u003e\n\u003ctd\u003eFree tracked UK delivery on every order, in plain packaging; same-day processing for orders before 2pm Monday to Friday; EU delivery in 3-7 working days; unopened items returnable within 30 days\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\u003cp\u003eA label alone proves little. Anti-doping researchers in Cologne name contaminated dietary supplements as one route by which SARMs have reached athletes' samples (Alhalabi et al., 2025): a tub can carry a substance it does not declare. Reviews of \"S23\" record what writers felt, not what they took. Full terms are on our \u003ca href=\"\/en-ro\/pages\/shipping\"\u003edelivery\u003c\/a\u003e and \u003ca href=\"\/en-ro\/pages\/guarantee\"\u003eguarantee\u003c\/a\u003e pages, and further checks are in \u003ca href=\"\/en-ro\/blogs\/news\/how-to-choose-a-sarms-supplier-uk-checklist\"\u003ehow to choose a SARMs supplier in the UK\u003c\/a\u003e.\u003c\/p\u003e\u003ch2\u003eCapsules compared with other forms\u003c\/h2\u003e\u003cp\u003eBesides capsules, S-23 circulates as tablets and as liquids labelled in milligrams per millilitre. The molecule does not change between them; what changes is where the stated amount is fixed and what a certificate can confirm. No published study has compared formats of S-23.\u003c\/p\u003e\u003cp\u003eIn a capsule or tablet the amount per unit is fixed at the factory, so a laboratory can report milligrams per capsule, the figure that tests the 15 mg claim here, although a pooled assay gives only the average and unit-to-unit variation shows only when capsules are tested singly. A liquid's certificate reports concentration on the test date, and the amount in any portion then depends on how accurately a volume is drawn, whether the compound stays dissolved in the cold, and solvent lost from a bottle opened many times.\u003c\/p\u003e\u003cp\u003eAs a small synthetic molecule rather than a peptide, S-23 is not open in the same way to the objection that digestive enzymes break swallowed peptides apart (see \u003ca href=\"\/en-ro\/blogs\/news\/do-oral-peptides-work\"\u003edo oral peptides work\u003c\/a\u003e). The oral excretion studies described under detection below gave it by mouth, one as a tablet, and we know of no published study of it by injection. A dry powder in a shell is also kept from the water and solvents in which breakdown usually runs fastest, though that is general chemistry, not a measured result for S-23.\u003c\/p\u003e\u003ch2\u003eS-23 compared with RAD-140\u003c\/h2\u003e\u003cp\u003e\"S23 vs RAD140\" is the comparison searched most often for this compound, usually as a question about which is stronger. Chemistry and regulation answer part of it; the rest has never been studied.\u003c\/p\u003e\u003ctable\u003e\n\u003cthead\u003e\u003ctr\u003e\n\u003cth\u003eFeature\u003c\/th\u003e\n\u003cth\u003eS-23 (this product)\u003c\/th\u003e\n\u003cth\u003eRAD-140\u003c\/th\u003e\n\u003c\/tr\u003e\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003eChemical family\u003c\/td\u003e\n\u003ctd\u003eAryl-propionamide, like andarine and ostarine\u003c\/td\u003e\n\u003ctd\u003eA different scaffold built around a 1,3,4-oxadiazole ring\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eFormula, molecular weight, CAS\u003c\/td\u003e\n\u003ctd\u003eC18H13ClF4N2O3, 416.8, 1010396-29-8\u003c\/td\u003e\n\u003ctd\u003eC20H16ClN5O2, 393.8, 1182367-47-0\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003ePurpose of the research\u003c\/td\u003e\n\u003ctd\u003eHormonal male contraception, in rats (2009)\u003c\/td\u003e\n\u003ctd\u003eAnabolic androgen action in preclinical models (Radius Health, 2011); later breast cancer\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eStudies in people\u003c\/td\u003e\n\u003ctd\u003eNo clinical trial; anti-doping excretion studies only\u003c\/td\u003e\n\u003ctd\u003eOne Phase 1 trial in 22 women with advanced breast cancer; anti-doping excretion studies\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eBest-documented effects\u003c\/td\u003e\n\u003ctd\u003eStrong LH and FSH suppression; with an oestrogen, reversible loss of sperm production (rats)\u003c\/td\u003e\n\u003ctd\u003eRaised AST, ALT and bilirubin, the most frequent adverse events in that trial (LoRusso et al., 2022)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eLicensed as a medicine\u003c\/td\u003e\n\u003ctd\u003eNowhere\u003c\/td\u003e\n\u003ctd\u003eNowhere\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eWADA\u003c\/td\u003e\n\u003ctd\u003eS1.2, prohibited as a SARM\u003c\/td\u003e\n\u003ctd\u003eS1.2, named among the examples\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\u003cp\u003eS-23's reputation for strength rests on the 2009 cell work, where it bound the receptor tightly and switched it on fully; Radius Health likewise called RAD-140 potent. Those results come from different laboratories, assays and species, and no study has tested the two side by side, so no ranking is supported. Receptor potency would in any case say nothing about effects or risks in a person.\u003c\/p\u003e\u003cp\u003eThe evidence is unequal: RAD-140 has adverse events and blood levels recorded in supervised patients, while S-23 has rat pharmacology and urine data from anti-doping volunteers. No equivalence between their milligram labels has been established, and both are sold here for laboratory research only. RAD-140 brands, including \u003ca href=\"\/en-ro\/products\/imuscle-testolon-rad-140-60-10mg\"\u003eiMuscle Testolone RAD-140\u003c\/a\u003e, are compared in the \u003ca href=\"\/en-ro\/collections\/rad-140\"\u003eRAD-140 (Testolone) collection\u003c\/a\u003e, and its research record is set out in \u003ca href=\"\/en-ro\/blogs\/news\/rad-140-testolone-what-the-research-says\"\u003eRAD-140 (testolone): what the research says\u003c\/a\u003e.\u003c\/p\u003e\u003ch2\u003eReading the certificate of analysis for this product\u003c\/h2\u003e\u003cp\u003eiMuscle is a third-party brand, so any certificate of analysis (COA) is the manufacturer's, not ours. Where iMuscle has supplied one for the batch we hold, we show it; where none exists, we say so rather than show a generic document. Our Janoshik Analytical batch testing covers Free Muscle-brand compounds only, not iMuscle. At a minimum, a real batch certificate carries the lot number printed on the pack, the test method (HPLC or LC-MS) and a purity figure; a full S-23 certificate lets you check each of these:\u003c\/p\u003e\u003col\u003e\n\u003cli\u003e\n\u003cstrong\u003eThe right compound.\u003c\/strong\u003e S-23 by name, ideally with CAS 1010396-29-8. A report for S-22, S-4 or an unnamed \"SARM\" does not describe this pot.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eIdentity, with the method stated.\u003c\/strong\u003e HPLC matches a peak to an S-23 reference standard; LC-MS adds a mass that should fit C18H13ClF4N2O3 (416.8 g\/mol). With one chlorine atom, S-23 should also give a companion signal two mass units higher, roughly a third the height of the main one.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePurity.\u003c\/strong\u003e The percentage of chromatogram peak area that is S-23. A high figure says the material is clean, not that each capsule holds 15 mg.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eContent per capsule.\u003c\/strong\u003e A measured milligram figure to set against the 15 mg label claim; sixty times it is the real pack total.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWhich mirror-image form.\u003c\/strong\u003e S-23 is the (2S) form. Its mirror image has the same formula and mass, which ordinary HPLC and LC-MS cannot tell apart; unless a chiral method is named, this has not been checked.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eLot number, test date and laboratory.\u003c\/strong\u003e The lot must match your pot; the date shows the result's age; a named laboratory can confirm it issued the report.\u003c\/li\u003e\n\u003c\/ol\u003e\u003cp\u003eIf an iMuscle document falls short on any of these, \u003ca href=\"\/en-ro\/pages\/contact\"\u003econtact us\u003c\/a\u003e with your lot number and we will tell you what exists for the stock we hold. See also \u003ca href=\"\/en-ro\/blogs\/news\/how-to-read-a-certificate-of-analysis\"\u003ehow to read a COA\u003c\/a\u003e and our \u003ca href=\"\/en-ro\/pages\/lab-tests\"\u003elab tests\u003c\/a\u003e page.\u003c\/p\u003e\u003ch2\u003eDetection, sport and testing\u003c\/h2\u003e\u003cp\u003eS-23 falls under section S1.2 (other anabolic agents) of the WADA Prohibited List, which covers SARMs as a class, and is banned in and out of competition. It lay behind five adverse analytical findings reported in 2022 (Alhalabi et al., 2025), and under strict liability an athlete answers for any prohibited substance in their sample, however it got there.\u003c\/p\u003e\u003cp\u003eOral excretion studies give detection times. At the Institute of Legal Medicine in Strasbourg, a single volunteer took one oral amount in the milligram range; unchanged S-23 was found in hydrolysed urine from 2 hours to 28 days afterwards, as was a hydroxylated metabolite (Ameline et al., 2022). At the German Sport University Cologne, volunteers took single and repeated amounts of 1, 10 or 50 micrograms, the scale of a contaminated product. With a method able to detect 1 picogram per millilitre, a single microgram was traced for an average of up to 253 hours, about ten days, and a single 50 micrograms for up to 544 hours, about 23 days; 18 metabolites were identified (Alhalabi et al., 2025).\u003c\/p\u003e\u003cp\u003eThose figures come from one person and from small groups given very small amounts. Detection after repeated or larger milligram quantities has not been studied, so for this product: detectable, window not established. Anyone subject to anti-doping rules should treat any contact with S-23 as a risk of an adverse finding.\u003c\/p\u003e\u003ch2\u003eStorage, stability and handling\u003c\/h2\u003e\u003cp\u003eWe know of no published stability study of S-23 in any form, so iMuscle's printed expiry or best-before date is the working limit, and a certificate describes the batch on its test date, not on the day the pot is opened.\u003c\/p\u003e\u003cp\u003eKeep the capsules in their original pot with the lid closed, because its lot number links them to any certificate. Store it cool, dry and dark, in a cupboard rather than a kitchen, bathroom or windowsill; humidity softens shells and makes powder cake. Let a cold pot reach room temperature before opening it so condensation does not form inside. Shells that have darkened, gone soft or fused together suggest the contents have changed since the batch was tested; keep that pot apart and \u003ca href=\"\/en-ro\/pages\/contact\"\u003etell us\u003c\/a\u003e its lot number.\u003c\/p\u003e\u003cp\u003eWear gloves whenever a capsule is opened or powder is spilled, and work away from food and drink. Label anything taken out of the pot with compound, lot and date. Store the pot where children and pets cannot reach it, and treat unwanted material as chemical waste under local rules rather than tipping it into a household bin or drain. Unopened items can be returned within 30 days, so a pot left sealed keeps that option open.\u003c\/p\u003e\u003ch2\u003eGlossary\u003c\/h2\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eAryl-propionamide\u003c\/strong\u003e: the structural series of S-23, ostarine (S-22) and andarine (S-4), source of the S-numbered codes.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFull agonist\u003c\/strong\u003e: a compound that activates a receptor as completely as the body's own hormone, as S-23 did in 2009 cell assays; some related SARMs are only partial agonists.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eInhibitory constant (Ki)\u003c\/strong\u003e: how tightly a compound binds a receptor in a competition assay; lower means tighter, about 1.7 nanomolar for S-23.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eLevator ani\u003c\/strong\u003e: a small androgen-sensitive pelvic muscle weighed in rat studies as a marker of anabolic activity.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eLH and FSH\u003c\/strong\u003e: luteinising hormone and follicle-stimulating hormone, released by the pituitary gland to drive testosterone and sperm production in the testes.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSpermatogenesis\u003c\/strong\u003e: sperm production in the testes.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eReference standard\u003c\/strong\u003e: material of certified identity used as the benchmark for identifying and measuring a sample.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eHydrolysed urine\u003c\/strong\u003e: urine treated with an enzyme that strips attached groups such as glucuronic acid, freeing a compound and its metabolites for measurement.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eAdverse analytical finding\u003c\/strong\u003e: a laboratory's formal report that a prohibited substance or its metabolite is present in an athlete's sample.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eStrict liability\u003c\/strong\u003e: the anti-doping rule that athletes answer for whatever is found in their sample, whatever its source.\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch2\u003eAbout iMuscle S-23\u003c\/h2\u003e\u003cp\u003eiMuscle's S-23 pot has a magenta label with S-23 in large type under the iMUSCLE logo, and its front box reads 60 capsules, 15 mg each. The gallery shows the front of the pot and two test documents but no side panel, so the front label is the packaging evidence here. The brand's Romanian site gives the product as S-23, \"60\/15mg\", matching our record of 15 mg per capsule and 900 mg per pot.\u003c\/p\u003e\u003cp\u003eS-23 sits in iMuscle's standard line of single pots but in none of the eight iMuscle stacks we list, so this pot is the only form in which we sell it. The brand operates web shops in a number of European countries, among them imuscle.ro in Romanian, and its About page lists ten countries it supplies, the UK included. That page names no UK retailer, and Free Muscle does not claim to be an authorised one. Other iMuscle products are on the \u003ca href=\"\/en-ro\/collections\/brand-imuscle\"\u003eiMuscle brand page\u003c\/a\u003e.\u003c\/p\u003e\u003cp\u003eS-23 is a non-steroidal SARM characterised in rats in a 2009 study of hormonal male contraception; no clinical trial in people has been published. It is not licensed in the UK and WADA bans it under S1. iMuscle is currently the only maker of S-23 we stock, and the \u003ca href=\"\/en-ro\/collections\/s-23\"\u003eS-23 collection\u003c\/a\u003e is where other brands would appear.\u003c\/p\u003e\u003cp\u003eThe documents are a test protocol numbered RN18674, from a laboratory in Sofia and naming iMuscle LTD. as manufacturer, and an HPLC print-out for S23 with lot 20210908; both date to 2021, and no lot number appears on the protocol. Treat them as a record of an earlier test, not of the pot you would receive. \u003ca href=\"\/en-ro\/pages\/contact\"\u003eSend us\u003c\/a\u003e your pot's lot code to find out what iMuscle has supplied for it; Janoshik testing does not extend to this brand.\u003c\/p\u003e\u003ch2\u003eRelated\u003c\/h2\u003e\u003cul\u003e\n\u003cli\u003e\n\u003ca href=\"\/en-ro\/collections\/s-23\"\u003eAll brands of S-23\u003c\/a\u003e, compared on strength, pack size and batch testing\u003c\/li\u003e\n\u003cli\u003e\n\u003ca href=\"\/en-ro\/collections\/brand-imuscle\"\u003eAll iMuscle products\u003c\/a\u003e stocked at Free Muscle\u003c\/li\u003e\n\u003cli\u003eRelated SARMs: \u003ca href=\"\/en-ro\/collections\/rad-140\"\u003eRAD-140 (Testolone)\u003c\/a\u003e, \u003ca href=\"\/en-ro\/collections\/andarine\"\u003eAndarine (S-4)\u003c\/a\u003e, \u003ca href=\"\/en-ro\/collections\/ostarine\"\u003eOstarine (MK-2866)\u003c\/a\u003e and \u003ca href=\"\/en-ro\/collections\/sarms\"\u003eall SARMs\u003c\/a\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003ca href=\"\/en-ro\/pages\/shipping\"\u003eDelivery\u003c\/a\u003e and \u003ca href=\"\/en-ro\/pages\/guarantee\"\u003ereturns\u003c\/a\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\u003cp\u003e\u003cem\u003eResearch compounds sold by Free Muscle are supplied for laboratory research use only and are not for human consumption. They are not authorised as medicines by the MHRA, EMA or FDA, are not food supplements, and are sold only to adults aged 18 or over. Nothing on this page is medical or dosing advice.\u003c\/em\u003e\u003c\/p\u003e\u003ch2\u003eReferences\u003c\/h2\u003e\u003col\u003e\n\u003cli\u003eJones A, et al. Preclinical characterization of a (S)-N-(4-cyano-3-trifluoromethyl-phenyl)-3-(3-fluoro, 4-chlorophenoxy)-2-hydroxy-2-methyl-propanamide: a selective androgen receptor modulator for hormonal male contraception. Endocrinology. 2009;150(1):385-95. \u003ca href=\"https:\/\/pubmed.ncbi.nlm.nih.gov\/18772237\/\" rel=\"noopener\"\u003ePMID: 18772237\u003c\/a\u003e.\u003c\/li\u003e\n\u003cli\u003eAmeline A, et al. In vitro characterization of S-23 metabolites produced by human liver microsomes, and subsequent application to urine after a controlled oral administration. J Pharm Biomed Anal. 2022;212:114660. \u003ca href=\"https:\/\/pubmed.ncbi.nlm.nih.gov\/35182830\/\" rel=\"noopener\"\u003ePMID: 35182830\u003c\/a\u003e.\u003c\/li\u003e\n\u003cli\u003eAlhalabi H, et al. Investigations Into the Urinary Metabolite Elimination Profile of the Selective Androgen Receptor Modulator S-23 in Studies Mimicking Contaminated Product Ingestion for Doping Control Purposes. Biomed Chromatogr. 2025;39(6):e70090. \u003ca href=\"https:\/\/pubmed.ncbi.nlm.nih.gov\/40277337\/\" rel=\"noopener\"\u003ePMID: 40277337\u003c\/a\u003e.\u003c\/li\u003e\n\u003cli\u003eLoRusso P, et al. A First-in-Human Phase 1 Study of a Novel Selective Androgen Receptor Modulator (SARM), RAD140, in ER+\/HER2- Metastatic Breast Cancer. Clin Breast Cancer. 2022;22(1):67-77. \u003ca href=\"https:\/\/pubmed.ncbi.nlm.nih.gov\/34565686\/\" rel=\"noopener\"\u003ePMID: 34565686\u003c\/a\u003e.\u003c\/li\u003e\n\u003c\/ol\u003e","brand":"iMuscle","offers":[{"title":"Default Title","offer_id":48468980138210,"sku":null,"price":42.99,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0772\/3499\/5426\/files\/S-23_800x_0f998b39-6402-4c4a-9f31-a7dfe2de1826.jpg?v=1789931414"},{"product_id":"imuscle-stenabolic-sr-9009-60-10mg","title":"iMuscle Stenabolic SR-9009 — 60 caps, 10mg","description":"\u003cp\u003e\u003cstrong\u003eiMuscle Stenabolic SR-9009, 60 caps, 10mg\u003c\/strong\u003e is an iMuscle listing of SR9009, labelled at 10 mg per capsule, 60 capsules per pack. It is supplied through the \u003ca href=\"\/en-ro\/pages\/muscle-market\"\u003eMuscle Market\u003c\/a\u003e range for laboratory research only, is not for human consumption, and is sold to adults aged 18 and over. Below: what the published research on SR9009 reports, what the label documents, where the compound stands in UK law and in sport, how to read a batch certificate for it, and how batch certificates are handled for iMuscle products.\u003c\/p\u003e\n\u003ch2\u003eAbout SR9009\u003c\/h2\u003e\n\u003cp\u003eSR9009, sold under the name Stenabolic, is a synthetic agonist of REV-ERB alpha and REV-ERB beta, nuclear receptors that connect the circadian clock to the expression of metabolic genes. It was developed at the Scripps Research Institute by Burris and colleagues. It is not a SARM and has no described activity at the androgen receptor.\u003c\/p\u003e\n\u003cp\u003ePubChem records it as CID 57394020, CAS number 1379686-30-2, molecular formula C20H24ClN3O4S and molecular weight 437.9, with InChIKey MMJJNHOIVCGAAP-UHFFFAOYSA-N. Its systematic name is ethyl 3-[[(4-chlorophenyl)methyl-[(5-nitrothiophen-2-yl)methyl]amino]methyl]pyrrolidine-1-carboxylate. These identifiers are what any certificate of analysis should be checked against.\u003c\/p\u003e\n\u003ch2\u003eWhat the published research reports\u003c\/h2\u003e\n\u003cp\u003eIn a 2012 study published in Nature, mice given SR9009 by injection showed altered circadian behaviour, and the circadian pattern of metabolic gene expression in liver, muscle and fat changed, with increased energy expenditure. Diet-induced obese mice treated with the agonist lost fat mass and showed improved dyslipidaemia and hyperglycaemia (Solt et al., 2012). A 2013 mouse study led from the Institut Pasteur de Lille, with the Scripps group as co-authors, linked REV-ERB alpha to mitochondrial number in skeletal muscle and reported that pharmacological activation of the receptor increased exercise capacity in mice (Woldt et al., 2013). In 2019 a group at the University of Pennsylvania reported that SR9009 changed cell proliferation and metabolism in cells lacking REV-ERB altogether, showing that some of its effects are off-target (Dierickx et al., 2019).\u003c\/p\u003e\n\u003cp\u003eThe animal studies used injection, and there are no published human trials or human pharmacokinetic data, so the behaviour of an oral capsule is unknown. It has never been approved as a medicine. Two further papers matter for anyone assessing SR9009 bought online. A Ghent University doping control laboratory confirmed SR9009 in a black market product bought over the internet and described eight metabolites formed by human liver enzymes in the test tube (Geldof et al., 2016). A 2017 analysis of 44 products sold online as SARMs found that 17 contained another unapproved drug, SR9009 among them, and that in only 18 of the 44 (41%) did the amount of active compound match the label (Van Wagoner et al., 2017). Nothing above is a claim about this product.\u003c\/p\u003e\n\u003ch2\u003eThis listing\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003eManufacturer: iMuscle\u003c\/li\u003e\n\u003cli\u003eCompound: SR9009 (Stenabolic)\u003c\/li\u003e\n\u003cli\u003eForm: Capsules\u003c\/li\u003e\n\u003cli\u003ePack size: 60 capsules\u003c\/li\u003e\n\u003cli\u003eStrength: 10 mg per capsule, as stated by the manufacturer\u003c\/li\u003e\n\u003cli\u003eTotal in pack: 600 mg (10 mg x 60 capsules)\u003c\/li\u003e\n\u003cli\u003eBatch certificate of analysis: shown where iMuscle supplies one for the batch we hold\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eThe 600 mg total is a label figure, calculated from the manufacturer's stated strength and capsule count. It becomes a measured figure only when a batch certificate reports content per capsule. Our guide to \u003ca href=\"\/en-ro\/blogs\/news\/price-per-mg-compare-sarms-peptides\"\u003eprice per milligram\u003c\/a\u003e shows how to compare it with other SR9009 listings.\u003c\/p\u003e\n\u003ch2\u003eSR9009 in the UK: buying, legal status and what to check\u003c\/h2\u003e\n\u003cp\u003eThe searches \"SR9009 UK\", \"stenabolic UK\" and \"SR9009 UK sarms\" hide two questions: may it lawfully be sold here, and how do you tell a sound listing from a poor one. SR9009 is not a licensed medicine in the UK, has not been assessed by the MHRA, and is not an authorised food supplement. It is not a controlled drug. It is sold for laboratory research to adults aged 18 and over and is not for human consumption. Any seller offering instructions for taking it is marketing it outside that research basis.\u003c\/p\u003e\n\u003cp\u003eIn sport the position is stricter. SR9009 is named on the WADA Prohibited List under section S4 (hormone and metabolic modulators) alongside GW1516 and is prohibited at all times. Anyone subject to anti-doping rules should consult the current list. Our \u003ca href=\"\/en-ro\/blogs\/news\/what-are-sarms-the-2026-research-guide\"\u003eresearch guide\u003c\/a\u003e covers the wider legal picture for compounds sold next to SARMs.\u003c\/p\u003e\n\u003cp\u003eThe 2017 finding that SR9009 turned up in products labelled as something else is the best reason to judge an SR9009 listing on documents rather than on ratings or forum posts. The points worth checking, and how this listing answers each:\u003c\/p\u003e\n\u003col\u003e\n\u003cli\u003e\n\u003cstrong\u003eNamed manufacturer and compound identifiers.\u003c\/strong\u003e This listing: iMuscle, with CAS 1379686-30-2 and the molecular formula given above, so a certificate can be matched to SR9009 and not to its sister compound SR9011.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eStrength and count on the label.\u003c\/strong\u003e iMuscle states 10 mg in each of 60 capsules.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eA certificate tied to the stock on sale.\u003c\/strong\u003e This listing: shown only where iMuscle supplies one for the batch we hold, and we say plainly when there is none.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWho is selling, and to whom.\u003c\/strong\u003e Here the seller is FreeMuscle, registered in Andorra, with UK operations and dispatch in Scunthorpe; buyers must be 18 or over, and unopened items may be returned within 30 days.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eHow it travels.\u003c\/strong\u003e Every UK order goes out free with tracking, in plain packaging. Anything ordered by 2pm on a weekday is processed that day, and parcels to the EU take 3-7 working days.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eNo usage guidance.\u003c\/strong\u003e This listing gives none, and neither does anything else on this site.\u003c\/li\u003e\n\u003c\/ol\u003e\n\u003cp\u003eDelivery and returns terms are set out on our \u003ca href=\"\/en-ro\/pages\/shipping\"\u003eshipping\u003c\/a\u003e and \u003ca href=\"\/en-ro\/pages\/guarantee\"\u003eguarantee\u003c\/a\u003e pages. The \u003ca href=\"\/en-ro\/blogs\/news\/how-to-choose-a-sarms-supplier-uk-checklist\"\u003eUK supplier checklist\u003c\/a\u003e applies the same tests to any shop, including this one.\u003c\/p\u003e\n\u003ch2\u003eCapsules compared with other forms\u003c\/h2\u003e\n\u003cp\u003eSR9009 is offered in three formats across the market: filled capsules like these, liquids in which the compound is dissolved or suspended, and loose powder. None of them has been studied for SR9009 in people. The published mouse studies used injected solutions prepared in the laboratory, so no commercial format, capsule or liquid, reproduces the conditions of that research. What differs is how each fixes the amount per unit.\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eCapsule fill.\u003c\/strong\u003e The stated 10 mg is blended with an inert filler and dosed into each shell by weight. Variation comes from blend uniformity and fill weight, and a laboratory can open and assay individual capsules to check both.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eLiquid.\u003c\/strong\u003e The label states a concentration, often in a carrier that is not identified. The figure holds only while the compound stays evenly dissolved or suspended, and any volume drawn off depends on how accurately it is measured.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePowder.\u003c\/strong\u003e Accuracy moves entirely to the researcher's balance and technique, and a certificate describes the bulk material only.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eThe search \"SR9009 peptide\" reflects a common confusion. SR9009 is not a peptide: it has no amino acid chain for digestive enzymes to cut, which is the main obstacle for peptides given by mouth (see \u003ca href=\"\/en-ro\/blogs\/news\/do-oral-peptides-work\"\u003eDo oral peptides work?\u003c\/a\u003e). That does not mean oral SR9009 is well absorbed. With no human pharmacokinetic study published, the fraction of an oral amount reaching the circulation in people is simply unknown, and we do not suggest otherwise. For this pack, the useful property of the capsule format is that it gives a countable unit that a laboratory can test.\u003c\/p\u003e\n\u003ch2\u003eSR9009 compared with Cardarine\u003c\/h2\u003e\n\u003cp\u003e\"Stenabolic vs cardarine\" is a frequent search, because the two are sold next to each other and both appear in section S4 of the WADA list. The overlap largely ends there. The table sets out where they differ.\u003c\/p\u003e\n\u003ctable\u003e\n\u003cthead\u003e\u003ctr\u003e\n\u003cth\u003eQuestion\u003c\/th\u003e\n\u003cth\u003eSR9009 (Stenabolic)\u003c\/th\u003e\n\u003cth\u003eCardarine (GW-501516)\u003c\/th\u003e\n\u003c\/tr\u003e\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003eReceptor it was designed for\u003c\/td\u003e\n\u003ctd\u003eREV-ERB alpha and beta, circadian clock receptors\u003c\/td\u003e\n\u003ctd\u003ePPAR-delta, a fatty acid metabolism receptor\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eWho made it and why\u003c\/td\u003e\n\u003ctd\u003eAn academic research tool for probing the clock\u003c\/td\u003e\n\u003ctd\u003eA pharmaceutical candidate for blood lipid disorders\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eHighest level of evidence\u003c\/td\u003e\n\u003ctd\u003eMouse and cell studies only\u003c\/td\u003e\n\u003ctd\u003eShort human lipid trials\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eKnown specificity problem\u003c\/td\u003e\n\u003ctd\u003eEffects in cells with no REV-ERB (2019)\u003c\/td\u003e\n\u003ctd\u003eDevelopment halted over rodent tumour findings\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOral data in people\u003c\/td\u003e\n\u003ctd\u003eNone published\u003c\/td\u003e\n\u003ctd\u003eGiven by mouth in human trials\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eUK position\u003c\/td\u003e\n\u003ctd\u003eUnlicensed, research use only, 18+\u003c\/td\u003e\n\u003ctd\u003eUnlicensed, research use only, 18+\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eSport\u003c\/td\u003e\n\u003ctd\u003eWADA S4, prohibited at all times\u003c\/td\u003e\n\u003ctd\u003eWADA S4, prohibited at all times\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003cp\u003ePut in plain terms, Cardarine is a failed drug candidate with some human data and a serious toxicology history, while SR9009 is a laboratory probe that was never taken into people at all. Neither is a SARM. The 2019 off-target finding also means that effects attributed to REV-ERB in SR9009 studies may partly come from other targets. We make no claim about either compound used together with any other. The \u003ca href=\"\/en-ro\/collections\/cardarine\"\u003eCardarine collection\u003c\/a\u003e lists the brands we hold, and our article on \u003ca href=\"\/en-ro\/blogs\/news\/cardarine-gw-501516-what-happened-in-development\"\u003ewhy Cardarine development stopped\u003c\/a\u003e gives its history. People also search \"SR9009 vs SR9011\": SR9011 is the sister compound described in the same 2012 paper, with a similar target and no human data either. We do not stock it.\u003c\/p\u003e\n\u003ch2\u003eReading the certificate of analysis for this product\u003c\/h2\u003e\n\u003cp\u003eCertificates work differently for our own label and for iMuscle. Every Free Muscle-brand batch goes to Janoshik Analytical, an independent laboratory, and the certificate is emailed on request. iMuscle is an outside manufacturer stocked through Muscle Market, so for this product a certificate of analysis appears only when iMuscle provides one for the particular batch on our shelves. We do not pass off a generic PDF without a batch number as a batch certificate. Send us the product name by email and we will forward whatever we hold for the current batch, or tell you directly that nothing is held.\u003c\/p\u003e\n\u003cp\u003eIf an iMuscle certificate is available for this batch, read it in this order:\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eIdentity\u003c\/strong\u003e: the compound named should be SR9009, not SR9011 or a generic \"Stenabolic\" with no structure. HPLC identifies it by comparing retention time with a reference standard; LC-MS adds a mass, which should fit the 437.9 molecular weight given above.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePurity\u003c\/strong\u003e: a percentage from HPLC peak areas. It tells you how much of the detected material is SR9009, not how many milligrams a capsule holds.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eContent per capsule\u003c\/strong\u003e: the measured amount in one capsule, which is the figure to set against the stated 10 mg.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eBatch number\u003c\/strong\u003e: must match the code on the pack you received.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eLaboratory and test date\u003c\/strong\u003e: name the analyst and show whether the result is recent enough to cover this stock.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eFor this brand, gaps mean specific things. No certificate means this listing makes no documented claim about identity, purity or content beyond the manufacturer's label. Purity with no content figure confirms the molecule but leaves the 10 mg unverified. A batch number that does not match your pack means the certificate describes different stock, and you should \u003ca href=\"\/en-ro\/pages\/contact\"\u003econtact us\u003c\/a\u003e. Our \u003ca href=\"\/en-ro\/pages\/lab-tests\"\u003elab tests page\u003c\/a\u003e and the article on \u003ca href=\"\/en-ro\/blogs\/news\/how-to-read-a-certificate-of-analysis\"\u003ehow to read a COA\u003c\/a\u003e cover the methods in more depth.\u003c\/p\u003e\n\u003ch2\u003eDetection, sport and testing\u003c\/h2\u003e\n\u003cp\u003eFor athletes, the regulatory point is simple: SR9009 is in section S4 of the WADA Prohibited List and is banned in and out of competition, and under strict liability a positive sample counts regardless of how the substance got there, including through a mislabelled product. The 2016 Ghent study identified eight human liver metabolites of SR9009 so that screens could look for breakdown products as well as the parent compound, and it recommended adding SR9009 to routine screening. When the authors searched 1,511 stored doping control urine results, they found neither SR9009 nor its metabolites in those routine samples.\u003c\/p\u003e\n\u003cp\u003eNo verified study has measured how long SR9009 or its metabolites remain detectable in human urine after exposure. The honest answer for this capsule product is therefore: detectable, window not established. Anyone subject to anti-doping rules should treat it as prohibited.\u003c\/p\u003e\n\u003ch2\u003eStorage, stability and handling\u003c\/h2\u003e\n\u003cp\u003eNo stability study of SR9009 in capsule form has been published, so the manufacturer's expiry date, where iMuscle prints one, is the only product-specific guide. General laboratory practice for small organic compounds applies: protect from heat, moisture and light.\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eLeave the capsules in the tub they arrived in: the batch code printed on it is the only link to a certificate.\u003c\/li\u003e\n\u003cli\u003eStore somewhere cool, dry and dark, away from radiators, windowsills and steamy rooms; capsule shells soften in humid air and turn brittle in very dry air.\u003c\/li\u003e\n\u003cli\u003eLog the batch number, date received and date opened.\u003c\/li\u003e\n\u003cli\u003eWear nitrile gloves when handling opened capsules or spilled powder, and clean surfaces afterwards.\u003c\/li\u003e\n\u003cli\u003eSurplus or out-of-date capsules belong in a chemical waste stream, never in household bins or down a drain.\u003c\/li\u003e\n\u003cli\u003eStore on a shelf that children and pets cannot reach, and never in a fridge or cupboard used for food.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2\u003eGlossary\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eREV-ERB alpha and beta\u003c\/strong\u003e: nuclear receptors that repress clock and metabolic genes on a daily cycle; SR9009 was designed to activate them.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCircadian clock\u003c\/strong\u003e: the internal roughly 24-hour cycle of gene activity found in most cells.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eAgonist\u003c\/strong\u003e: a molecule that binds a receptor and switches it on.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eOff-target effect\u003c\/strong\u003e: an action of a compound that does not go through its intended receptor, as shown for SR9009 in 2019.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSR9011\u003c\/strong\u003e: a closely related REV-ERB agonist described alongside SR9009 in 2012; not stocked here.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePharmacokinetics\u003c\/strong\u003e: the study of what the body does to a substance over time, from uptake to elimination; no human data exist for SR9009.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eLiver microsomes\u003c\/strong\u003e: fractions of liver cells holding drug-metabolising enzymes, used in the test tube to predict metabolites.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMetabolite\u003c\/strong\u003e: a product the body forms by altering a substance, often the target of anti-doping tests.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eReference standard\u003c\/strong\u003e: a highly characterised sample of a compound that a laboratory uses to confirm identity and quantity.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eRetention time\u003c\/strong\u003e: the point at which a compound emerges from an HPLC column; a sample and a standard of the same substance should emerge together.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eStrict liability\u003c\/strong\u003e: under anti-doping rules, a finding in a sample stands against the athlete whether or not they knew the substance was there.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2\u003eAbout iMuscle Stenabolic SR-9009\u003c\/h2\u003e\u003cp\u003eSTENABOLIC is the name on iMuscle's SR9009 pot, printed on a teal label with SR and 9009 underneath; Stenabolic is a trade name for the compound, not a different substance. The front box reads 60 capsules, 10 mg each, and on imuscle.ro the listing reads Stenabolic SR-9009, \"60\/10mg\". No side panel photograph is included, so the front of the pot is the label evidence in this gallery.\u003c\/p\u003e\u003cp\u003eLike S-23, this pot is outside all eight iMuscle stacks we list. SR9009 is not a SARM, although iMuscle sells it within its SARMs range. The brand's About page splits its products into the nine single pots of its standard line, all stocked here, and a combined series that we do not carry. Browse the rest on the \u003ca href=\"\/en-ro\/collections\/brand-imuscle\"\u003eiMuscle brand page\u003c\/a\u003e.\u003c\/p\u003e\u003cp\u003eSR9009 activates the REV-ERB receptors that link the body clock to metabolic genes. It came out of academic work at Scripps Research, has been studied in mice and cells but in no published human trial, holds no UK licence, and appears in section S4 of the WADA list. No other SR9009 brand is on our shelves as of October 2026; the \u003ca href=\"\/en-ro\/collections\/sr9009\"\u003eSR9009 collection\u003c\/a\u003e and the \u003ca href=\"\/en-ro\/blogs\/news\/sr9009-stenabolic-research-guide\"\u003eSR9009 research guide\u003c\/a\u003e carry the detail.\u003c\/p\u003e\u003cp\u003eTwo 2021 documents are shown: protocol RN18694 from a Sofia laboratory, which gives iMuscle LTD. as maker and records a single-sample HPLC assay with no lot number, and an English print-out for SR9009 with lot 20210911. iMuscle also states that it tests all its lots at an independent European laboratory. Neither document is matched to current stock, so quote the lot code on your pot when you \u003ca href=\"\/en-ro\/pages\/contact\"\u003econtact us\u003c\/a\u003e; the Janoshik programme is for Free Muscle's own brand, not iMuscle.\u003c\/p\u003e\u003ch2\u003eRelated\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003e\u003ca href=\"\/en-ro\/collections\/sr9009\"\u003eAll brands of SR9009 we stock, compared\u003c\/a\u003e\u003c\/li\u003e\n\u003cli\u003e\u003ca href=\"\/en-ro\/collections\/brand-imuscle\"\u003eAll iMuscle products\u003c\/a\u003e\u003c\/li\u003e\n\u003cli\u003e\u003ca href=\"\/en-ro\/blogs\/news\/sr9009-stenabolic-research-guide\"\u003eSR9009 (Stenabolic): REV-ERB agonist research and the bioavailability problem\u003c\/a\u003e\u003c\/li\u003e\n\u003cli\u003e\n\u003ca href=\"\/en-ro\/collections\/cardarine\"\u003eCardarine\u003c\/a\u003e and the wider \u003ca href=\"\/en-ro\/collections\/sarms\"\u003eSARMs range\u003c\/a\u003e\n\u003c\/li\u003e\n\u003cli\u003e\u003ca href=\"\/en-ro\/pages\/lab-tests\"\u003eBatch testing and certificates of analysis\u003c\/a\u003e\u003c\/li\u003e\n\u003cli\u003e\n\u003ca href=\"\/en-ro\/pages\/shipping\"\u003eDelivery\u003c\/a\u003e and \u003ca href=\"\/en-ro\/pages\/guarantee\"\u003ereturns\u003c\/a\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cem\u003eResearch compounds sold by Free Muscle are supplied for laboratory research use only and are not for human consumption. They are not authorised as medicines by the MHRA, EMA or FDA, are not food supplements, and are sold only to adults aged 18 or over. Nothing on this page is medical or dosing advice. Summaries of published research describe study findings and are not claims about any product.\u003c\/em\u003e\u003c\/p\u003e\n\u003ch2\u003eReferences\u003c\/h2\u003e\n\u003col\u003e\n\u003cli\u003eSolt LA, et al. Regulation of circadian behaviour and metabolism by synthetic REV-ERB agonists. Nature. 2012;485(7396):62-8. \u003ca href=\"https:\/\/pubmed.ncbi.nlm.nih.gov\/22460951\/\" rel=\"noopener\"\u003ePMID: 22460951\u003c\/a\u003e.\u003c\/li\u003e\n\u003cli\u003eWoldt E, et al. Rev-erb-α modulates skeletal muscle oxidative capacity by regulating mitochondrial biogenesis and autophagy. Nat Med. 2013;19(8):1039-46. \u003ca href=\"https:\/\/pubmed.ncbi.nlm.nih.gov\/23852339\/\" rel=\"noopener\"\u003ePMID: 23852339\u003c\/a\u003e.\u003c\/li\u003e\n\u003cli\u003eDierickx P, et al. SR9009 has REV-ERB-independent effects on cell proliferation and metabolism. Proc Natl Acad Sci U S A. 2019;116(25):12147-12152. \u003ca href=\"https:\/\/pubmed.ncbi.nlm.nih.gov\/31127047\/\" rel=\"noopener\"\u003ePMID: 31127047\u003c\/a\u003e.\u003c\/li\u003e\n\u003cli\u003eGeldof L, et al. In Vitro Metabolic Studies of REV-ERB Agonists SR9009 and SR9011. Int J Mol Sci. 2016;17(10):1676. \u003ca href=\"https:\/\/pubmed.ncbi.nlm.nih.gov\/27706103\/\" rel=\"noopener\"\u003ePMID: 27706103\u003c\/a\u003e.\u003c\/li\u003e\n\u003cli\u003eVan Wagoner RM, et al. Chemical Composition and Labeling of Substances Marketed as Selective Androgen Receptor Modulators and Sold via the Internet. JAMA. 2017;318(20):2004-2010. \u003ca href=\"https:\/\/pubmed.ncbi.nlm.nih.gov\/29183075\/\" rel=\"noopener\"\u003ePMID: 29183075\u003c\/a\u003e.\u003c\/li\u003e\n\u003c\/ol\u003e","brand":"iMuscle","offers":[{"title":"Default Title","offer_id":48468980170978,"sku":null,"price":48.99,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0772\/3499\/5426\/files\/STENABOLIC_3333x_3eb916f3-0538-401c-8e12-157d57e3440a.jpg?v=1789931416"},{"product_id":"imuscle-testolon-rad-140-60-10mg","title":"iMuscle Testolone RAD-140 — 60 caps, 10mg","description":"\u003cp\u003eiMuscle Testolone RAD-140 comes as 60 capsules stated at 10 mg each, giving 600 mg of RAD-140 per pack. RAD-140, or testolone, is a non-steroidal selective androgen receptor modulator with a single published clinical trial. iMuscle manufactures the product; Free Muscle stocks it in the Muscle Market range and ships it from the UK to adults for laboratory research only.\u003c\/p\u003e\u003ch2\u003eAbout RAD-140\u003c\/h2\u003e\u003cp\u003eRAD-140 is a synthetic, non-steroidal selective androgen receptor modulator, commonly called testolone. Like other SARMs it binds the androgen receptor, but it has no steroid ring system and its structure is unrelated to testosterone. Radius Health described its discovery in 2011 as a potent, orally bioavailable SARM and reported its characterisation in several preclinical animal models of anabolic androgen action (Miller et al., 2011).\u003c\/p\u003e\u003cp\u003eRAD-140 later entered a Phase 1 oncology trial in women with ER-positive, HER2-negative advanced breast cancer, published in 2022 (LoRusso et al., 2022). Twenty-two heavily pretreated patients took part. The adverse events recorded most often were raised AST (59%), ALT (45%) and bilirubin (27%), and grade 3 or 4 events occurred in 16 of the 22. Outside clinical research, published case reports link RAD-140 to cholestatic liver injury, including a biopsy-supported case in a 24-year-old man that resolved after exposure stopped (Leung et al., 2022).\u003c\/p\u003e\u003cp\u003eThe only other structured human data come from anti-doping research: a 2022 Cologne study gave adult male volunteers microgram amounts to chart how RAD-140 is excreted, covered under detection below (Wagener et al., 2022). No published trial has measured muscle, strength or body composition in healthy adults. The research described here relates to the molecule in laboratory and clinical settings and is not a claim about this listing.\u003c\/p\u003e\u003ch3\u003eChemical identity\u003c\/h3\u003e\u003cp\u003eIdentifiers from PubChem, against which a laboratory result can be checked:\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eSystematic name\u003c\/strong\u003e: 2-chloro-4-[[(1R,2S)-1-[5-(4-cyanophenyl)-1,3,4-oxadiazol-2-yl]-2-hydroxypropyl]amino]-3-methylbenzonitrile\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCAS number\u003c\/strong\u003e: 1182367-47-0\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFormula and molecular weight\u003c\/strong\u003e: C20H16ClN5O2, 393.8 g\/mol\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eInChIKey\u003c\/strong\u003e: XMBUPPIEVAFYHO-KPZWWZAWSA-N\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePubChem CID\u003c\/strong\u003e: 44200882\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eOther names\u003c\/strong\u003e: testolone, vosilasarm, EP0062\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch2\u003eThis listing\u003c\/h2\u003e\u003cul\u003e\n\u003cli\u003eCompound: RAD-140 (Testolone)\u003c\/li\u003e\n\u003cli\u003eBrand: iMuscle\u003c\/li\u003e\n\u003cli\u003eForm: capsules\u003c\/li\u003e\n\u003cli\u003ePack size: 60 capsules\u003c\/li\u003e\n\u003cli\u003eStated strength: 10 mg per capsule (manufacturer's label claim)\u003c\/li\u003e\n\u003cli\u003eStated total per pack: 600 mg\u003c\/li\u003e\n\u003cli\u003eIntended use: laboratory research only, not for human consumption\u003c\/li\u003e\n\u003cli\u003eSold to adults aged 18 and over\u003c\/li\u003e\n\u003c\/ul\u003e\u003cp\u003eThe strength is the manufacturer's label claim; only a batch certificate confirms it. To compare brands of RAD-140, use total milligrams per pack, as explained in \u003ca href=\"\/en-ro\/blogs\/news\/price-per-mg-compare-sarms-peptides\"\u003eprice per milligram\u003c\/a\u003e. Of the RAD-140 listings we stock, only this one and the Free Muscle-brand pack state a per-capsule strength; the Yakka Strength and Thoroughbred Labs listings do not.\u003c\/p\u003e\u003ch2\u003eRAD-140 in the UK: buying, legal status and what to check\u003c\/h2\u003e\u003cp\u003eUK searches such as \"RAD140 for sale UK\" and \"testolone RAD 140 UK\" raise two practical questions: what the law allows, and what evidence a listing should offer.\u003c\/p\u003e\u003ch3\u003eLegal status\u003c\/h3\u003e\u003cp\u003eNo UK medicines licence exists for RAD-140: the MHRA has never granted it a marketing authorisation, and no regulator elsewhere has licensed it either. Nor is it an authorised food supplement, so selling it for human consumption would be unlawful. It is not a controlled drug. Free Muscle supplies it only as a research compound, to adults aged 18 or over, for laboratory use. WADA prohibits it at all times under section S1 (anabolic agents) of its Prohibited List. Buyers are responsible for the rules that apply to them, including any anti-doping code. Background on the class is in \u003ca href=\"\/en-ro\/blogs\/news\/what-are-sarms-the-2026-research-guide\"\u003eWhat are SARMs? The 2026 research guide\u003c\/a\u003e.\u003c\/p\u003e\u003ch3\u003eWhy a label proves little on its own\u003c\/h3\u003e\u003cp\u003eThe case for checking is empirical. A US anti-doping laboratory, working with the US Anti-Doping Agency, bought 44 products sold online as SARMs and analysed them: in 26 the amount of active compound differed substantially from the label, and 17 contained a different unapproved drug altogether, among them ibutamoren, GW501516 and SR9009 (Van Wagoner et al., 2017). It concerned US websites in 2016, not this product.\u003c\/p\u003e\u003ch3\u003eQuestions to ask of any listing, answered for this one\u003c\/h3\u003e\u003ctable\u003e\n\u003cthead\u003e\u003ctr\u003e\n\u003cth\u003eQuestion\u003c\/th\u003e\n\u003cth\u003eThis iMuscle listing\u003c\/th\u003e\n\u003c\/tr\u003e\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003eIs a strength printed, with a capsule count?\u003c\/td\u003e\n\u003ctd\u003eYes: 10 mg per capsule, 60 capsules, 600 mg per pack (manufacturer's claim)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eWho makes it?\u003c\/td\u003e\n\u003ctd\u003eiMuscle\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eWho sells it, and from where?\u003c\/td\u003e\n\u003ctd\u003eFreeMuscle, a business registered in Andorra, dispatching from Scunthorpe\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eIs there a certificate for the batch sold?\u003c\/td\u003e\n\u003ctd\u003eShown only where iMuscle supplies one for the batch we hold\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eAre the terms research-only?\u003c\/td\u003e\n\u003ctd\u003eYes: laboratory research, adults 18+, no directions for use and no promised outcomes\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eHow does it travel?\u003c\/td\u003e\n\u003ctd\u003eFree tracked delivery on every UK order, in plain packaging; same-day processing for orders before 2pm Monday to Friday; 3-7 working days to the EU\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eCan it be returned?\u003c\/td\u003e\n\u003ctd\u003eUnopened items, within 30 days\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\u003cp\u003eOnly the certificate depends on the manufacturer. Personal accounts under \"RAD 140 UK reddit\" or \"best RAD 140 UK\" describe experiences, not the contents of a pack; only a batch certificate measures those. More checks are in \u003ca href=\"\/en-ro\/blogs\/news\/how-to-choose-a-sarms-supplier-uk-checklist\"\u003ehow to choose a SARMs supplier in the UK\u003c\/a\u003e.\u003c\/p\u003e\u003ch2\u003eReading the certificate of analysis for this product\u003c\/h2\u003e\u003cp\u003eiMuscle is a third-party brand, so any certificate of analysis (COA) for this product is the manufacturer's, not ours. A COA is shown only where iMuscle supplies one for the batch we hold; a generic document is not a substitute for a batch certificate. Free Muscle-brand compounds are assayed batch by batch at Janoshik Analytical; that programme does not cover iMuscle. A genuine batch certificate names its method, HPLC or LC-MS; check an iMuscle certificate in this order:\u003c\/p\u003e\u003col\u003e\n\u003cli\u003e\n\u003cstrong\u003eCompound named.\u003c\/strong\u003e It should say RAD-140, or a synonym such as testolone or vosilasarm. A certificate for RAD-150, or for an unnamed \"SARM\", is not a certificate for this product.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eIdentity result.\u003c\/strong\u003e A chromatogram alone shows that something eluted where a RAD-140 reference standard does; a mass spectrum shows a molecule of the right mass, for protonated RAD-140 an ion at m\/z 394.1065 (Wagener et al., 2022).\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePurity.\u003c\/strong\u003e A share of chromatogram peak area. It describes how clean the material is; a capsule could meet a high purity figure and still hold far more or far less than 10 mg.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eContent per capsule.\u003c\/strong\u003e The measured figure to set against the 10 mg claim; sixty times it is the real pack total. One assay gives the average of the capsules tested, not the spread between them.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eLot number, test date and laboratory.\u003c\/strong\u003e The lot must match your pack; the date shows how old the result is.\u003c\/li\u003e\n\u003c\/ol\u003e\u003cp\u003ePurity without a content figure leaves the 10 mg claim, and with it the 600 mg total, unconfirmed. A result with no stated method cannot be weighed. A lot number that is missing, or differs from the one on your pot, means the certificate concerns another production run. In any of those cases, \u003ca href=\"\/en-ro\/pages\/contact\"\u003eask us\u003c\/a\u003e before relying on the batch. See also \u003ca href=\"\/en-ro\/blogs\/news\/how-to-read-a-certificate-of-analysis\"\u003ehow to read a COA\u003c\/a\u003e and our \u003ca href=\"\/en-ro\/pages\/lab-tests\"\u003elab tests\u003c\/a\u003e page.\u003c\/p\u003e\u003ch2\u003eCapsules compared with other forms\u003c\/h2\u003e\u003cp\u003eTestolone tablets and RAD-140 \"research liquids\" are also on the market, and searches such as \"RAD 140 tablets\" and \"RAD 140 liquid UK\" reflect that. Whatever the format, the molecule is RAD-140; what varies is how reliably the printed amount reaches each unit, and no one has published a comparison for this compound.\u003c\/p\u003e\u003ctable\u003e\n\u003cthead\u003e\u003ctr\u003e\n\u003cth\u003eForm\u003c\/th\u003e\n\u003cth\u003eWhat the label figure relies on\u003c\/th\u003e\n\u003cth\u003eWhat its certificate should state\u003c\/th\u003e\n\u003cth\u003eStorage sensitivity\u003c\/th\u003e\n\u003c\/tr\u003e\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003eCapsule (this product)\u003c\/td\u003e\n\u003ctd\u003eUniform mixing of the powder and a consistent fill in every shell\u003c\/td\u003e\n\u003ctd\u003eMilligrams per capsule, to set against 10 mg\u003c\/td\u003e\n\u003ctd\u003eMoisture: shells soften and the powder clumps\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eTablet\u003c\/td\u003e\n\u003ctd\u003eUniform mixing, then pressing with binders and sometimes a coating\u003c\/td\u003e\n\u003ctd\u003eMilligrams per tablet\u003c\/td\u003e\n\u003ctd\u003eMoisture and breakage\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eLiquid\u003c\/td\u003e\n\u003ctd\u003eComplete dissolution, a solution that stays stable, and accurate measuring of every volume drawn\u003c\/td\u003e\n\u003ctd\u003eMilligrams per millilitre, on the test date\u003c\/td\u003e\n\u003ctd\u003eChemical change in solution; evaporation concentrates what remains\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\u003cp\u003eBecause RAD-140 is a small molecule rather than a peptide, the question that dominates debate over swallowed peptides, whether digestive enzymes break them down, does not arise in the same way (see \u003ca href=\"\/en-ro\/blogs\/news\/do-oral-peptides-work\"\u003edo oral peptides work\u003c\/a\u003e). Both human studies gave it by mouth; we know of no published study of RAD-140 by injection.\u003c\/p\u003e\u003ch2\u003eRAD-140 compared with RAD-150 (TLB-150)\u003c\/h2\u003e\u003cp\u003e\"RAD 140 vs RAD 150\", also searched as \"TLB 150 vs RAD 140\", is the comparison most often made for this compound.\u003c\/p\u003e\u003ctable\u003e\n\u003cthead\u003e\u003ctr\u003e\n\u003cth\u003eFeature\u003c\/th\u003e\n\u003cth\u003eRAD-140 (this product)\u003c\/th\u003e\n\u003cth\u003eRAD-150 (TLB-150)\u003c\/th\u003e\n\u003c\/tr\u003e\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003eRelationship\u003c\/td\u003e\n\u003ctd\u003eParent molecule\u003c\/td\u003e\n\u003ctd\u003eBenzoate ester of RAD-140, recorded in PubChem as \"TLB 150 Benzoate\" (CID 68547459)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eFormula and molecular weight\u003c\/td\u003e\n\u003ctd\u003eC20H16ClN5O2, 393.8\u003c\/td\u003e\n\u003ctd\u003eC27H20ClN5O3, 497.9\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eWhere it appears in print\u003c\/td\u003e\n\u003ctd\u003ePeer-reviewed journals since 2011\u003c\/td\u003e\n\u003ctd\u003eA patent, US 8,629,167 (compound 87); no journal papers\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eIC50 for androgen receptor binding, patent assay\u003c\/td\u003e\n\u003ctd\u003e2 nM\u003c\/td\u003e\n\u003ctd\u003e130 nM\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eStudies in people\u003c\/td\u003e\n\u003ctd\u003eOne cancer trial and one anti-doping excretion study\u003c\/td\u003e\n\u003ctd\u003eNo published study\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eWADA Prohibited List\u003c\/td\u003e\n\u003ctd\u003eListed by name in S1.2\u003c\/td\u003e\n\u003ctd\u003eAbsent from the examples; covered by the section's open wording\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\u003cp\u003eThe binding figures come from the patent, as deposited in PubChem, not from a journal, and describe the intact molecules in a commercial binding kit. On them the ester bound the receptor about 65 times more weakly than RAD-140. A living system may split an ester back to its parent, so this does not settle what RAD-150 does there, but it argues against the ester being a stronger ligand in its own right. Claims that it lasts longer or acts more strongly are unmeasured, and whether, and how fast, it becomes RAD-140 in the body is unknown.\u003c\/p\u003e\u003cp\u003eThe heavier formula matters for labels too: roughly a fifth of the ester's mass comes from the added benzoate portion, so a milligram figure for RAD-150 and the 600 mg on this pack do not describe the same quantity of the RAD-140 structure. Legally the two are alike: neither is a licensed medicine or an authorised food, and both are sold here for laboratory research only. WADA names RAD140 in S1.2; RAD-150 is absent, but the section introduces its examples with \"including, but not limited to\", so absence is no exemption. Brands held are in the \u003ca href=\"\/en-ro\/collections\/rad-150\"\u003eRAD-150 (TLB-150) collection\u003c\/a\u003e; the chemistry is set out in \u003ca href=\"\/en-ro\/blogs\/news\/rad-140-vs-rad-150-tlb-150\"\u003eRAD-140 vs RAD-150 (TLB-150)\u003c\/a\u003e.\u003c\/p\u003e\u003ch2\u003eDetection, sport and testing\u003c\/h2\u003e\u003cp\u003eRAD-140 is named, as RAD140, under S1.2 (other anabolic agents) of the WADA Prohibited List, banned at all times. Under strict liability an adverse analytical finding stands against the athlete whatever its source, be it a research compound, a mislabelled product or a contaminated supplement.\u003c\/p\u003e\u003cp\u003eIts persistence in urine has been measured, though only after very small amounts. At the German Sport University Cologne, six excretion studies, each with five adult male volunteers, used single or five daily amounts of 1, 10 or 50 micrograms, and their urine was analysed by LC-HRMS\/MS (Wagener et al., 2022). Unchanged RAD-140 outlasted all six metabolites tracked in every group. After one 50 microgram amount it was found up to 696 hours later, about 29 days; after five daily amounts of 50 micrograms, up to 912 hours, about 38 days, after the last. Part of the aim was to help laboratories judge whether a finding reflects deliberate use or contamination.\u003c\/p\u003e\u003cp\u003eEvery figure above comes from microgram exposures. How long RAD-140 remains detectable after milligram quantities, such as the 10 mg stated per capsule here, has not been reported that we know of, so for this product: detectable, window not established. The Cologne results set no upper limit, and anyone subject to testing should regard any contact with RAD-140 as a positive-test risk.\u003c\/p\u003e\u003ch2\u003eStorage, stability and handling\u003c\/h2\u003e\u003cp\u003eShelf life for RAD-140 capsules has not been established in any published study we know of. Work to iMuscle's printed expiry or best-before date, where there is one, and to the age of any certificate.\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eKeep the original pot.\u003c\/strong\u003e A certificate refers to the lot number printed on it, so capsules moved to another container can no longer be matched to one. Close the lid straight after each opening.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCool, dry and dark.\u003c\/strong\u003e A cupboard away from radiators, kettles and bathrooms. Humidity is the chief threat: shells absorb water and turn soft and sticky, and moisture that reaches the powder can hasten chemical breakdown.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eNo temperature swings.\u003c\/strong\u003e A cold pot brought into a warm room gathers condensation; let it reach room temperature before opening.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eRecords.\u003c\/strong\u003e Note when the seal was first broken, and label anything removed from the pot with compound, lot and date.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eHandling.\u003c\/strong\u003e Gloves for opened capsules or spilled powder, no eating or drinking nearby, storage beyond the reach of children and animals, and disposal through chemical waste routes rather than household bins or drains.\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch2\u003eGlossary\u003c\/h2\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eSARM\u003c\/strong\u003e: selective androgen receptor modulator, a label for non-steroidal molecules developed to switch on the androgen receptor in some tissues, chiefly muscle and bone, while sparing others.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eReference standard\u003c\/strong\u003e: material of known identity and purity, run alongside a sample for comparison.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eHPLC\u003c\/strong\u003e: high-performance liquid chromatography; the sample is pushed through a packed column and each component shows as a peak on the chromatogram, whose areas give the purity figure.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eLC-MS\u003c\/strong\u003e: the same separation followed by a mass spectrometer, which identifies each component by its mass.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eProtonated molecule\u003c\/strong\u003e: a molecule carrying one extra hydrogen ion, the form in which LC-MS registers RAD-140, at m\/z 394.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eAssay\u003c\/strong\u003e: the test of how much RAD-140 a capsule holds, as opposed to how clean it is.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eEster\u003c\/strong\u003e: an acid joined to an alcohol group by a bond that water can break; RAD-150 is RAD-140 joined in this way to benzoic acid.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eAdverse analytical finding\u003c\/strong\u003e: the formal term for a laboratory report of a prohibited substance in an athlete's sample.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eStrict liability\u003c\/strong\u003e: the rule that athletes answer for any prohibited substance in their sample, however it got there.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMarketing authorisation\u003c\/strong\u003e: a regulator's permission, in the UK from the MHRA, to sell a product as a medicine; RAD-140 has none.\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch2\u003eAbout iMuscle Testolon (RAD-140)\u003c\/h2\u003e\u003cp\u003eiMuscle labels its RAD-140 as TESTOLON, in large letters on a blue label with RAD 140 below, so the pot may be searched for under either name. A box on the front gives 60 capsules at 10 mg each; the side panel names Testolone RAD140 at 10 mg per capsule alongside a chemical name and the brand's statement of purity tested above 97%. iMuscle's Romanian shop calls it Testolon RAD-140, \"60\/10mg\", in line with our 600 mg per pot.\u003c\/p\u003e\u003cp\u003eTestolon belongs to iMuscle's standard line of nine single pots and also features in three stacks we list: \u003ca href=\"\/en-ro\/products\/imuscle-cardarine-testolon-rad140\"\u003eCardarine and Testolon\u003c\/a\u003e, \u003ca href=\"\/en-ro\/products\/imuscle-ligandrol-testolon-yk-11\"\u003eLigandrol, Testolon and YK-11\u003c\/a\u003e and \u003ca href=\"\/en-ro\/products\/imuscle-testolon-yk11-ibutamoren\"\u003eTestolon, YK-11 and Ibutamoren\u003c\/a\u003e. The brand sells through its own websites in several EU countries and says its products reach ten countries including the UK; it lists no UK stockists, and we claim no official status. The whole range is on our \u003ca href=\"\/en-ro\/collections\/brand-imuscle\"\u003eiMuscle page\u003c\/a\u003e.\u003c\/p\u003e\u003cp\u003eRadius Health designed RAD-140 as a non-steroidal SARM, and its only trial in people was a small phase 1 cancer study; it is unlicensed in the UK and sits in WADA section S1. On stated figures, the RAD-140 pots from \u003ca href=\"\/en-ro\/collections\/brand-yakka-strength\"\u003eYakka Strength\u003c\/a\u003e and \u003ca href=\"\/en-ro\/collections\/brand-thoroughbred-labs\"\u003eThoroughbred Labs\u003c\/a\u003e are also labelled 10 mg in 60 capsules, as is Free Muscle's own, the only one with each batch assayed at Janoshik. Compare them on the \u003ca href=\"\/en-ro\/collections\/rad-140\"\u003eRAD-140 collection\u003c\/a\u003e.\u003c\/p\u003e\u003cp\u003eThe gallery's protocol, RN18664, and its HPLC print-out for RAD140, lot 20210908, are both 2021 documents, and the protocol lists no lot number. They record a 2021 test of a sample attributed to iMuscle; they do not show what the pot in stock today contains. Read the lot code on the pot and \u003ca href=\"\/en-ro\/pages\/contact\"\u003eask us\u003c\/a\u003e for any iMuscle document covering it.\u003c\/p\u003e\u003ch2\u003eRelated\u003c\/h2\u003e\u003cul\u003e\n\u003cli\u003e\n\u003ca href=\"\/en-ro\/collections\/rad-140\"\u003eAll brands of RAD-140 (Testolone)\u003c\/a\u003e, compared on strength, pack size and batch testing\u003c\/li\u003e\n\u003cli\u003e\n\u003ca href=\"\/en-ro\/collections\/brand-imuscle\"\u003eAll iMuscle products\u003c\/a\u003e stocked at Free Muscle\u003c\/li\u003e\n\u003cli\u003e\n\u003ca href=\"\/en-ro\/products\/free-muscle-rad-140-testolone-10mg\"\u003eFree Muscle RAD-140 Testolone 10mg\u003c\/a\u003e, the own-brand pack, Janoshik-assayed batch by batch\u003c\/li\u003e\n\u003cli\u003e\n\u003ca href=\"\/en-ro\/blogs\/news\/rad-140-testolone-what-the-research-says\"\u003eRAD-140 (testolone): what the research says\u003c\/a\u003e, from animal studies to case reports\u003c\/li\u003e\n\u003cli\u003e\n\u003ca href=\"\/en-ro\/pages\/shipping\"\u003eDelivery\u003c\/a\u003e and \u003ca href=\"\/en-ro\/pages\/guarantee\"\u003ereturns\u003c\/a\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\u003cp\u003e\u003cem\u003eResearch compounds sold by Free Muscle are supplied for laboratory research use only and are not for human consumption. They are not authorised as medicines by the MHRA, EMA or FDA, are not food supplements, and are sold only to adults aged 18 or over. Nothing on this page is medical or dosing advice.\u003c\/em\u003e\u003c\/p\u003e\u003ch2\u003eReferences\u003c\/h2\u003e\u003col\u003e\n\u003cli\u003eMiller CP, et al. Design, Synthesis, and Preclinical Characterization of the Selective Androgen Receptor Modulator (SARM) RAD140. ACS Med Chem Lett. 2011;2(2):124-9. \u003ca href=\"https:\/\/pubmed.ncbi.nlm.nih.gov\/24900290\/\" rel=\"noopener\"\u003ePMID: 24900290\u003c\/a\u003e.\u003c\/li\u003e\n\u003cli\u003eLoRusso P, et al. A First-in-Human Phase 1 Study of a Novel Selective Androgen Receptor Modulator (SARM), RAD140, in ER+\/HER2- Metastatic Breast Cancer. Clin Breast Cancer. 2022;22(1):67-77. \u003ca href=\"https:\/\/pubmed.ncbi.nlm.nih.gov\/34565686\/\" rel=\"noopener\"\u003ePMID: 34565686\u003c\/a\u003e.\u003c\/li\u003e\n\u003cli\u003eVan Wagoner RM, et al. Chemical Composition and Labeling of Substances Marketed as Selective Androgen Receptor Modulators and Sold via the Internet. JAMA. 2017;318(20):2004-2010. \u003ca href=\"https:\/\/pubmed.ncbi.nlm.nih.gov\/29183075\/\" rel=\"noopener\"\u003ePMID: 29183075\u003c\/a\u003e.\u003c\/li\u003e\n\u003cli\u003eWagener F, et al. Human In Vivo Metabolism and Elimination Behavior of Micro-Dosed Selective Androgen Receptor Modulator RAD140 for Doping Control Purposes. Metabolites. 2022;12(7):666. \u003ca href=\"https:\/\/pubmed.ncbi.nlm.nih.gov\/35888790\/\" rel=\"noopener\"\u003ePMID: 35888790\u003c\/a\u003e.\u003c\/li\u003e\n\u003cli\u003eLeung K, et al. RAD-140 Drug-Induced Liver Injury. Ochsner J. 2022;22(4):361-365. \u003ca href=\"https:\/\/pubmed.ncbi.nlm.nih.gov\/36561105\/\" rel=\"noopener\"\u003ePMID: 36561105\u003c\/a\u003e.\u003c\/li\u003e\n\u003c\/ol\u003e","brand":"iMuscle","offers":[{"title":"Default Title","offer_id":48468980203746,"sku":null,"price":39.99,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0772\/3499\/5426\/files\/TESTOLON.jpg?v=1789931418"},{"product_id":"imuscle-testolon-yk11-ibutamoren","title":"iMuscle Testolone + YK-11 + Ibutamoren stack","description":"\u003cp\u003e\u003cstrong\u003eiMuscle Testolone + YK-11 + Ibutamoren stack\u003c\/strong\u003e is a combined listing of three iMuscle research compounds: YK-11, Testolone (RAD-140) and Ibutamoren (MK-677). Its photographs show a pot for each of the three iMuscle compounds, with a capsule count and strength on every label, and a combined figure is withheld until the stock itself has been confirmed against the photographs. It is supplied through the \u003ca href=\"\/en-ro\/pages\/muscle-market\"\u003eMuscle Market\u003c\/a\u003e range for laboratory research only, is not for human consumption, and is sold to adults aged 18 and over. Each compound is covered in turn below.\u003c\/p\u003e\n\u003ch2\u003eThis listing\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003eManufacturer: iMuscle\u003c\/li\u003e\n\u003cli\u003eCompounds: YK-11, Testolone (RAD-140) and Ibutamoren (MK-677), one labelled pot each in the photographs\u003c\/li\u003e\n\u003cli\u003eForm: capsules\u003c\/li\u003e\n\u003cli\u003ePack: every pot in the photographs is marked 60 capsules; we confirm the stock itself on request\u003c\/li\u003e\n\u003cli\u003eStrength: 10 mg per capsule for each of the three, taken from the labels of the singles; the listing gives no combined figure\u003c\/li\u003e\n\u003cli\u003eBatch certificate of analysis: shown where iMuscle supplies one for the batch we hold\u003c\/li\u003e\n\u003cli\u003eSold to adults aged 18 and over, for laboratory research only\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eiMuscle also sells each compound on its own with a stated strength: \u003ca href=\"\/en-ro\/products\/imuscle-yk-11-60-10mg\"\u003eiMuscle YK-11\u003c\/a\u003e, \u003ca href=\"\/en-ro\/products\/imuscle-testolon-rad-140-60-10mg\"\u003eiMuscle Testolone RAD-140\u003c\/a\u003e and \u003ca href=\"\/en-ro\/products\/imuscle-ibutamoren-mk-677-60-10mg\"\u003eiMuscle Ibutamoren MK-677\u003c\/a\u003e are each labelled 10 mg per capsule, 60 capsules.\u003c\/p\u003e\n\u003ch2\u003eThe three compounds in this pack\u003c\/h2\u003e\n\u003ch3\u003eYK-11\u003c\/h3\u003e\n\u003cp\u003eYK-11 is a synthetic steroidal compound, a 19-nortestosterone derivative carrying a methoxyethylidene group, that is marketed as a SARM. It was first described by Kanno and colleagues at Toho University in Japan (PubChem CID 119058028, CAS 1370003-76-1, C25H34O6).\u003c\/p\u003e\n\u003cp\u003eIn a 2011 cell-culture study using a reporter-gene assay, YK-11 acted as a partial agonist of the androgen receptor and activated it without the receptor's N\/C-terminal interaction that dihydrotestosterone induces (Kanno 2011). A 2013 study in mouse C2C12 myoblast cells reported that YK-11 increased follistatin expression and promoted myogenic differentiation through the androgen receptor, the origin of the myostatin-inhibitor description (Kanno 2013). Those are the founding primary studies; there are no human trials or toxicology data, and later work has been limited to a few rodent studies and doping-control metabolism research. It has never been approved as a medicine.\u003c\/p\u003e\n\u003ch3\u003eRAD-140 (Testolone)\u003c\/h3\u003e\n\u003cp\u003eRAD-140, also listed as testolone and vosilasarm, is a non-steroidal selective androgen receptor modulator designed by Radius Health (PubChem CID 44200882, CAS 1182367-47-0, C20H16ClN5O2). Its human data come from a single clinical trial. A first-in-human phase 1 study enrolled 22 postmenopausal women with oestrogen receptor-positive, HER2-negative metastatic breast cancer and gave RAD-140 by mouth (LoRusso 2022). The most frequent adverse events were raised AST in 59.1 per cent of participants, raised ALT in 45.5 per cent and raised bilirubin in 27.3 per cent, and 16 of the 22 had a grade 3 or 4 adverse event. The measured half-life was 44.7 hours. The trial assessed tolerability and tumour response, not muscle or strength, and RAD-140 has not been approved as a medicine anywhere.\u003c\/p\u003e\n\u003ch3\u003eMK-677 (Ibutamoren)\u003c\/h3\u003e\n\u003cp\u003eMK-677, or ibutamoren, is a non-peptide growth hormone secretagogue developed by Merck under the code L-163,191 (PubChem CID 178024, CAS 159634-47-6, C27H36N4O5S). It mimics ghrelin at the GHS-R1a receptor, prompting the pituitary to release growth hormone, and it raises IGF-1. Randomised trials in older adults and in obese men recorded higher growth hormone and IGF-1 together with poorer glucose handling, and in the older adults increased appetite and mild oedema (Nass 2008; Svensson 1998); those trials are summarised in \u003ca href=\"\/en-ro\/blogs\/news\/mk-677-ibutamoren-what-the-research-says\"\u003eMK-677 (ibutamoren): what the research says\u003c\/a\u003e. It was never approved as a medicine.\u003c\/p\u003e\n\u003cp\u003eEach compound was studied on its own. No published study has examined YK-11, RAD-140 and MK-677 together, in cells, animals or people. We do not advise on combining compounds; the listing is described as the manufacturer presents it. Nothing above is a claim about this product.\u003c\/p\u003e\n\u003ch2\u003eYK-11, RAD-140 and MK-677 in the UK: buying, legal status and what to check\u003c\/h2\u003e\n\u003cp\u003eNone of the three compounds is a licensed medicine in the UK. None holds an MHRA marketing authorisation, none is an authorised food supplement, and none may lawfully be sold for human consumption. Free Muscle supplies this pack to adults aged 18 and over for laboratory research only.\u003c\/p\u003e\n\u003cp\u003eThe three do not sit in identical positions. YK-11 is a steroid, and because anabolic steroids are Class C controlled drugs in the UK its status is less clear-cut than that of RAD-140, a non-steroidal SARM with no steroid backbone. MK-677 acts on the growth hormone axis; its UK position is set out on our \u003ca href=\"\/en-ro\/pages\/mk-677-legal-status-uk\"\u003eMK-677 legal status page\u003c\/a\u003e. All three are prohibited in sport. Buyers are responsible for the rules that apply to them, and our \u003ca href=\"\/en-ro\/blogs\/news\/what-are-sarms-the-2026-research-guide\"\u003eSARMs research guide\u003c\/a\u003e covers the wider legal picture.\u003c\/p\u003e\n\u003ch3\u003eWhat to check before buying a multi-compound pack\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eEvery compound named precisely, with a separate stated amount per capsule for each. A list of names alone does not say how much of anything is present.\u003c\/li\u003e\n\u003cli\u003eA printed lot number that ties the pack to a named laboratory's certificate.\u003c\/li\u003e\n\u003cli\u003eA certificate that identifies and quantifies each compound, not only the one in the product title.\u003c\/li\u003e\n\u003cli\u003eA named seller, an 18+ restriction, plain packaging and tracked delivery.\u003c\/li\u003e\n\u003cli\u003eNo instructions for human use, no stacking advice and no promises of outcomes.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eHow this listing measures up\u003c\/h3\u003e\n\u003cp\u003eThe per-capsule amounts come from the pots' own labels, as the bundle listing prints none, and no combined figure is given before the stock itself has been checked. A certificate is shown only where iMuscle supplies one for the batch we hold. Orders ship from FreeMuscle's UK operations in Scunthorpe with free tracked UK delivery in plain packaging, orders placed before 2pm Monday to Friday are processed the same working day, EU delivery takes 3 to 7 working days, and unopened items can be returned within 30 days (\u003ca href=\"\/en-ro\/pages\/shipping\"\u003edelivery\u003c\/a\u003e, \u003ca href=\"\/en-ro\/pages\/guarantee\"\u003ereturns\u003c\/a\u003e). Our \u003ca href=\"\/en-ro\/blogs\/news\/how-to-choose-a-sarms-supplier-uk-checklist\"\u003eUK supplier checklist\u003c\/a\u003e explains each test.\u003c\/p\u003e\n\u003ch2\u003eCapsules compared with other forms\u003c\/h2\u003e\n\u003cp\u003eYK-11, RAD-140 and MK-677 are each sold separately as capsules, liquids and powder. No study has compared these forms for any of the three, so the points here concern what can be measured and kept stable, not effect. This pack is a single capsule said to hold all three.\u003c\/p\u003e\n\u003cp\u003ePutting three compounds in one fill changes the measurement problem. In a blend, the amount of each compound depends on how evenly the powders were mixed before filling, and a minor component that is poorly mixed can vary from capsule to capsule even when the total fill weight is consistent. Only a content assay of finished capsules, reporting each compound separately, shows the actual ratio.\u003c\/p\u003e\n\u003cp\u003eThe chemistry points the same way. All three are small molecules rather than peptides, so the digestion argument made about peptides taken by mouth, discussed in \u003ca href=\"\/en-ro\/blogs\/news\/do-oral-peptides-work\"\u003eDo oral peptides actually work?\u003c\/a\u003e, does not apply to them. YK-11 carries an orthoester-derived group that its main metabolism study called arguably labile (Piper 2018), which makes a water-free fill easier to keep stable than a solution. MK-677 is often supplied as its mesylate salt, which weighs more than the free base, so a label amount should say which form it refers to. None of this is a claim about what a capsule does.\u003c\/p\u003e\n\u003ch2\u003eYK-11 compared with RAD-140 and MK-677, and where RAD-150 fits\u003c\/h2\u003e\n\u003cp\u003eA common question is how the three compounds differ, and how RAD-140 relates to RAD-150. The table uses only points that published sources support.\u003c\/p\u003e\n\u003ctable\u003e\n\u003cthead\u003e\u003ctr\u003e\n\u003cth\u003ePoint\u003c\/th\u003e\n\u003cth\u003eYK-11\u003c\/th\u003e\n\u003cth\u003eRAD-140\u003c\/th\u003e\n\u003cth\u003eMK-677\u003c\/th\u003e\n\u003c\/tr\u003e\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003eChemical family\u003c\/td\u003e\n\u003ctd\u003eSteroidal, 19-nor skeleton\u003c\/td\u003e\n\u003ctd\u003eNon-steroidal SARM\u003c\/td\u003e\n\u003ctd\u003eNon-peptide ghrelin mimetic\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMain target\u003c\/td\u003e\n\u003ctd\u003eAndrogen receptor, partial agonist in cell assays\u003c\/td\u003e\n\u003ctd\u003eAndrogen receptor\u003c\/td\u003e\n\u003ctd\u003eGhrelin receptor (GHS-R1a)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eFormula and molecular weight\u003c\/td\u003e\n\u003ctd\u003eC25H34O6, 430.5\u003c\/td\u003e\n\u003ctd\u003eC20H16ClN5O2, 393.8\u003c\/td\u003e\n\u003ctd\u003eC27H36N4O5S, 528.7\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eDeveloped by\u003c\/td\u003e\n\u003ctd\u003eAcademic group, Toho University\u003c\/td\u003e\n\u003ctd\u003eRadius Health\u003c\/td\u003e\n\u003ctd\u003eMerck, as L-163,191\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003ePublished human data\u003c\/td\u003e\n\u003ctd\u003eNone\u003c\/td\u003e\n\u003ctd\u003eOne phase 1 trial, 22 women with metastatic breast cancer\u003c\/td\u003e\n\u003ctd\u003eRandomised trials in older adults and obese men\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eAdverse findings in people\u003c\/td\u003e\n\u003ctd\u003eNot studied\u003c\/td\u003e\n\u003ctd\u003eRaised liver enzymes and bilirubin\u003c\/td\u003e\n\u003ctd\u003ePoorer glucose handling, appetite, oedema\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eWADA section\u003c\/td\u003e\n\u003ctd\u003eS1, anabolic agents\u003c\/td\u003e\n\u003ctd\u003eS1, anabolic agents\u003c\/td\u003e\n\u003ctd\u003eS2, growth hormone secretagogues\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003cp\u003eTwo of the three share a target. YK-11 and RAD-140 both act at the androgen receptor, though they come from unrelated chemical families, while MK-677 works on a separate system, the growth hormone and IGF-1 axis. On human evidence, MK-677 has the most trial data, RAD-140 a single oncology study, and YK-11 none. Nothing here ranks one above another for any purpose.\u003c\/p\u003e\n\u003cp\u003eRAD-150, also sold as TLB-150, is not in this pack. PubChem records it as the benzoate ester of RAD-140; it appears in a Radius Health patent but has no peer-reviewed study, so claims that it acts for longer are inference. It is stocked separately on the \u003ca href=\"\/en-ro\/collections\/rad-150\"\u003eRAD-150 collection page\u003c\/a\u003e, and \u003ca href=\"\/en-ro\/blogs\/news\/rad-140-vs-rad-150-tlb-150\"\u003eRAD-140 vs RAD-150 (TLB-150)\u003c\/a\u003e sets out the chemistry. For MK-677 the most searched comparison is with ipamorelin, a peptide acting at the same ghrelin receptor; see the \u003ca href=\"\/en-ro\/collections\/ipamorelin\"\u003eipamorelin collection\u003c\/a\u003e and \u003ca href=\"\/en-ro\/blogs\/news\/mk-677-vs-ipamorelin-vs-hgh\"\u003eMK-677 vs ipamorelin vs somatropin\u003c\/a\u003e.\u003c\/p\u003e\n\u003ch2\u003eReading the certificate of analysis for this product\u003c\/h2\u003e\n\u003cp\u003eiMuscle is a third-party brand in the Muscle Market range, so any certificate for this pack is the manufacturer's, not ours. We show one only where iMuscle supplies it for the specific batch we hold, and a generic PDF with no batch number is not a batch certificate, so we do not present one as such. Janoshik Analytical testing of every batch applies to Free Muscle-brand products only, not to iMuscle. A three-compound certificate has more to prove; check these fields.\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eBatch number\u003c\/strong\u003e: the same number as the one printed on your pack.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eIdentity of each compound\u003c\/strong\u003e: a method such as HPLC against reference standards or LC-MS, with a separate result for YK-11 (C25H34O6, 430.5), RAD-140 (C20H16ClN5O2, 393.8) and MK-677 (C27H36N4O5S, 528.7 as the free base). A certificate that confirms only one of them says nothing about the other two.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eContent per capsule for each compound\u003c\/strong\u003e: match each figure to the label strength of the pot bearing that lot.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePurity\u003c\/strong\u003e: in a blend a single percentage is ambiguous, because three main peaks are expected. Look for each compound reported separately, with any unidentified peaks listed on their own.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eTest date and laboratory\u003c\/strong\u003e: a named lab and date allow the result to be confirmed at source.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eFor this listing a missing field has a specific meaning. With no certificate for the batch in stock, nothing independent confirms which compounds are present or in what amounts. With identity results but no content figures, the certificate confirms presence, not quantity. Email us through the \u003ca href=\"\/en-ro\/pages\/contact\"\u003econtact page\u003c\/a\u003e with the product name and batch number and we will send what we hold, or say plainly that there is none. See \u003ca href=\"\/en-ro\/pages\/lab-tests\"\u003elab tests\u003c\/a\u003e and \u003ca href=\"\/en-ro\/blogs\/news\/how-to-read-a-certificate-of-analysis\"\u003ehow to read a certificate of analysis\u003c\/a\u003e.\u003c\/p\u003e\n\u003ch2\u003eDetection, sport and testing\u003c\/h2\u003e\n\u003cp\u003eEvery compound in this pack is prohibited at all times, in and out of competition, on the WADA Prohibited List, which UK Anti-Doping applies in the UK. YK-11 and RAD-140 fall under section S1, anabolic agents, where RAD-140 is named; MK-677 falls under section S2 as a growth hormone secretagogue. Under strict liability an athlete answers for any prohibited substance found in their sample, whatever a label says.\u003c\/p\u003e\n\u003cp\u003eFor YK-11 there is direct evidence. The Cologne anti-doping laboratory followed deuterium-labelled YK-11 through urine. The parent compound never appeared, but fourteen metabolites did. Free metabolites were gone by 24 hours, whereas forms bound to glucuronic acid or sulfate remained measurable past 48 hours, and two of them were built into the laboratory's screen for anabolic agents (Piper 2018). That is one study, not a detection window. RAD-140 and MK-677 are screened for by accredited laboratories as well; this page cites no study that sets a window for either, so the accurate answer for both is detectable, window not established. A blood half-life is no guide to detection, since laboratories also target metabolites.\u003c\/p\u003e\n\u003ch2\u003eStorage, stability and handling\u003c\/h2\u003e\n\u003cp\u003eNo stability study has been published for YK-11, RAD-140 or MK-677 capsules, singly or combined, so no shelf life is given here beyond any date iMuscle prints on the pack. A blend is only as stable as its least stable component. The ester and orthoester-derived groups of YK-11 can be split by water, which makes moisture the main avoidable risk for the whole capsule.\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eStore the sealed container cool, dry and out of direct light.\u003c\/li\u003e\n\u003cli\u003eReplace the lid straight after opening and leave any desiccant sachet in place.\u003c\/li\u003e\n\u003cli\u003eKeep capsules in their own labelled pot; once moved or mixed, they lose their link to any certificate.\u003c\/li\u003e\n\u003cli\u003eNote the date received alongside the batch number.\u003c\/li\u003e\n\u003cli\u003eSet aside soft, sticky or discoloured capsules and contact us with the batch number.\u003c\/li\u003e\n\u003cli\u003eWear gloves, work away from food, drink, children and pets, and treat any surplus as chemical waste.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eOnly unopened items can be returned within 30 days.\u003c\/p\u003e\n\u003ch2\u003eGlossary\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eAndrogen receptor\u003c\/strong\u003e: the receptor inside cells that testosterone switches on; YK-11 and RAD-140 both bind it, from different chemical starting points.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSARM\u003c\/strong\u003e: selective androgen receptor modulator; RAD-140 is one, while YK-11 is a steroid sold under the same label.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eGrowth hormone secretagogue\u003c\/strong\u003e: MK-677's class, meaning any substance that triggers growth hormone release from the pituitary gland.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eGHS-R1a\u003c\/strong\u003e: the receptor for the hunger hormone ghrelin, which MK-677 mimics.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eIGF-1\u003c\/strong\u003e: insulin-like growth factor 1, the hormone the liver releases when growth hormone rises; MK-677 trials tracked it.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eAST and ALT\u003c\/strong\u003e: liver enzymes whose blood levels rise when liver cells are damaged; the most frequent adverse findings in the RAD-140 phase 1 trial.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePhase 1 trial\u003c\/strong\u003e: first-in-human testing that asks how well a compound is tolerated and how the body handles it, not whether it works.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMesylate salt\u003c\/strong\u003e: a form of a compound paired with methanesulfonic acid that weighs more than the free base.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eBlend uniformity\u003c\/strong\u003e: how evenly several powders are mixed before capsule filling, which decides whether each capsule holds the same ratio of compounds.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eStrict liability\u003c\/strong\u003e: the rule under which a prohibited substance in an athlete's sample counts against them whether or not they knew it was there.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2\u003eAbout the iMuscle Testolon, YK-11 and Ibutamoren stack\u003c\/h2\u003e\u003cp\u003eThe listing photographs show three separate iMuscle pots: blue TESTOLON, red YK 11 and purple IBUTAMOREN, each topped by the iMUSCLE logo and each printing its own count and strength. As singles, all three are labelled 60 capsules at 10 mg per capsule (\u003ca href=\"\/en-ro\/products\/imuscle-testolon-rad-140-60-10mg\"\u003eTestolon\u003c\/a\u003e, \u003ca href=\"\/en-ro\/products\/imuscle-yk-11-60-10mg\"\u003eYK-11\u003c\/a\u003e, \u003ca href=\"\/en-ro\/products\/imuscle-ibutamoren-mk-677-60-10mg\"\u003eIbutamoren MK-677\u003c\/a\u003e). If those figures matter, have us check the stock itself against the photographs before you order; no stack total is quoted here.\u003c\/p\u003e\u003cp\u003eiMuscle sells this combination on its Romanian shop under the title Testolon, YK11, Ibutamoren. Free Muscle stocks it as a third-party product; the brand's pages name no UK stockist, and we claim no official or exclusive role. Separate pots also set this stack apart from the multi-compound capsules iMuscle sells as VENOM, HULKED, COMBAT and MACHINE, none of which we carry. Every iMuscle product we list is on the \u003ca href=\"\/en-ro\/collections\/brand-imuscle\"\u003eiMuscle brand page\u003c\/a\u003e.\u003c\/p\u003e\u003cp\u003eAmong the three, RAD-140 is a non-steroidal SARM, YK-11 a steroidal compound known from cell work, and ibutamoren an oral growth hormone secretagogue; none of the three is licensed in the UK, and WADA places RAD-140 and YK-11 in S1 and ibutamoren in S2. Brands of each are compared on the \u003ca href=\"\/en-ro\/collections\/rad-140\"\u003eRAD-140\u003c\/a\u003e, \u003ca href=\"\/en-ro\/collections\/yk-11\"\u003eYK-11\u003c\/a\u003e and \u003ca href=\"\/en-ro\/collections\/mk-677\"\u003eMK-677\u003c\/a\u003e collections.\u003c\/p\u003e\u003cp\u003eNo document is shown on this stack. The singles show 2021 print-outs with lots 20210908 (RAD140), 20210911 (YK11) and 20210907 (MK677); if the codes on your pots differ, those papers describe other runs. \u003ca href=\"\/en-ro\/pages\/contact\"\u003eSend us\u003c\/a\u003e the three codes and we will pass on whatever iMuscle supplies, bearing in mind that Janoshik testing covers only Free Muscle-brand batches.\u003c\/p\u003e\u003ch2\u003eRelated\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003e\u003ca href=\"\/en-ro\/collections\/yk-11\"\u003eAll brands of YK-11 we stock, compared\u003c\/a\u003e\u003c\/li\u003e\n\u003cli\u003e\n\u003ca href=\"\/en-ro\/collections\/rad-140\"\u003eRAD-140 (Testolone) collection\u003c\/a\u003e and \u003ca href=\"\/en-ro\/collections\/mk-677\"\u003eMK-677 (Ibutamoren) collection\u003c\/a\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003ca href=\"\/en-ro\/collections\/brand-imuscle\"\u003eAll iMuscle products\u003c\/a\u003e and \u003ca href=\"\/en-ro\/collections\/market-bundles\"\u003eMuscle Market bundles\u003c\/a\u003e\n\u003c\/li\u003e\n\u003cli\u003e\u003ca href=\"\/en-ro\/blogs\/news\/yk-11-what-is-known\"\u003eYK-11: a steroidal compound sold as a SARM, what is actually known\u003c\/a\u003e\u003c\/li\u003e\n\u003cli\u003e\u003ca href=\"\/en-ro\/blogs\/news\/rad-140-testolone-what-the-research-says\"\u003eRAD-140 (Testolone): what the research says\u003c\/a\u003e\u003c\/li\u003e\n\u003cli\u003e\u003ca href=\"\/en-ro\/pages\/lab-tests\"\u003eBatch testing and certificates of analysis\u003c\/a\u003e\u003c\/li\u003e\n\u003cli\u003e\n\u003ca href=\"\/en-ro\/pages\/shipping\"\u003eDelivery\u003c\/a\u003e and \u003ca href=\"\/en-ro\/pages\/guarantee\"\u003ereturns\u003c\/a\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cem\u003eResearch compounds sold by Free Muscle are supplied for laboratory research use only and are not for human consumption. They are not authorised as medicines by the MHRA, EMA or FDA, are not food supplements, and are sold only to adults aged 18 or over. Nothing on this page is medical or dosing advice. Summaries of published research describe study findings and are not claims about any product.\u003c\/em\u003e\u003c\/p\u003e\n\u003ch2\u003eReferences\u003c\/h2\u003e\n\u003col\u003e\n\u003cli\u003eKanno Y, et al. (17alpha,20E)-17,20-[(1-methoxyethylidene)bis(oxy)]-3-oxo-19-norpregna-4,20-diene-21-carboxylic acid methyl ester (YK11) is a partial agonist of the androgen receptor. Biol Pharm Bull. 2011;34(3):318-23. \u003ca href=\"https:\/\/pubmed.ncbi.nlm.nih.gov\/21372378\/\" rel=\"noopener\"\u003ePMID: 21372378\u003c\/a\u003e.\u003c\/li\u003e\n\u003cli\u003eKanno Y, et al. Selective androgen receptor modulator, YK11, regulates myogenic differentiation of C2C12 myoblasts by follistatin expression. Biol Pharm Bull. 2013;36(9):1460-5. \u003ca href=\"https:\/\/pubmed.ncbi.nlm.nih.gov\/23995658\/\" rel=\"noopener\"\u003ePMID: 23995658\u003c\/a\u003e.\u003c\/li\u003e\n\u003cli\u003ePiper T, et al. Studies on the in vivo metabolism of the SARM YK11: Identification and characterization of metabolites potentially useful for doping controls. Drug Test Anal. 2018;10(11-12):1646-56. \u003ca href=\"https:\/\/pubmed.ncbi.nlm.nih.gov\/30379415\/\" rel=\"noopener\"\u003ePMID: 30379415\u003c\/a\u003e.\u003c\/li\u003e\n\u003cli\u003eLoRusso P, et al. A First-in-Human Phase 1 Study of a Novel Selective Androgen Receptor Modulator (SARM), RAD140, in ER+\/HER2- Metastatic Breast Cancer. Clin Breast Cancer. 2022;22(1):67-77. \u003ca href=\"https:\/\/pubmed.ncbi.nlm.nih.gov\/34565686\/\" rel=\"noopener\"\u003ePMID: 34565686\u003c\/a\u003e.\u003c\/li\u003e\n\u003cli\u003eNass R, et al. Effects of an oral ghrelin mimetic on body composition and clinical outcomes in healthy older adults: a randomized trial. Ann Intern Med. 2008;149(9):601-11. \u003ca href=\"https:\/\/pubmed.ncbi.nlm.nih.gov\/18981485\/\" rel=\"noopener\"\u003ePMID: 18981485\u003c\/a\u003e.\u003c\/li\u003e\n\u003cli\u003eSvensson J, et al. Two-month treatment of obese subjects with the oral growth hormone (GH) secretagogue MK-677 increases GH secretion, fat-free mass, and energy expenditure. J Clin Endocrinol Metab. 1998;83(2):362-9. \u003ca href=\"https:\/\/pubmed.ncbi.nlm.nih.gov\/9467542\/\" rel=\"noopener\"\u003ePMID: 9467542\u003c\/a\u003e.\u003c\/li\u003e\n\u003c\/ol\u003e","brand":"iMuscle","offers":[{"title":"Default Title","offer_id":48468980367586,"sku":null,"price":129.99,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0772\/3499\/5426\/files\/Combo6_720x_99821e6c-59bc-47ce-b643-d4c07517bcfa.jpg?v=1789931420"},{"product_id":"imuscle-yk-11-60-10mg","title":"iMuscle YK-11 — 60 caps, 10mg","description":"\u003cp\u003eiMuscle YK-11 is supplied as 60 capsules stated at 10 mg each, giving 600 mg of YK-11 per pack. YK-11 is a steroidal partial agonist of the androgen receptor that is commonly sold alongside SARMs and is described in cell studies as a follistatin inducer. iMuscle manufactures it and Free Muscle stocks it in the Muscle Market range for laboratory research by adults only.\u003c\/p\u003e\n\u003ch2\u003eThis listing\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003eCompound: YK-11\u003c\/li\u003e\n\u003cli\u003eBrand: iMuscle\u003c\/li\u003e\n\u003cli\u003eForm: capsules\u003c\/li\u003e\n\u003cli\u003ePack size: 60 capsules\u003c\/li\u003e\n\u003cli\u003eStated strength: 10 mg per capsule (manufacturer's label claim)\u003c\/li\u003e\n\u003cli\u003eStated total per pack: 600 mg\u003c\/li\u003e\n\u003cli\u003eIntended use: laboratory research only, not for human consumption\u003c\/li\u003e\n\u003cli\u003eSold to adults aged 18 and over\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eThe strength is the manufacturer's label claim; only a batch certificate confirms it. To compare brands of YK-11, use total milligrams per pack: dividing the listed price by the 600 mg stated here gives the cost per stated milligram, as explained in \u003ca href=\"\/en-ro\/blogs\/news\/price-per-mg-compare-sarms-peptides\"\u003eprice per milligram\u003c\/a\u003e.\u003c\/p\u003e\n\u003ch2\u003eAbout YK-11\u003c\/h2\u003e\n\u003cp\u003eYK-11 is often grouped with SARMs, but it is a steroidal molecule: a 19-nor-pregnane derivative with a methyl ester side chain. It was described in 2011 by a group at Toho University in Japan, who showed in cell assays that it acts as a partial agonist at the androgen receptor, activating the receptor less fully than DHT (Kanno 2011).\u003c\/p\u003e\n\u003cp\u003eThe claim that YK-11 is a myostatin inhibitor comes from a 2013 study in C2C12 mouse myoblast cells, in which YK-11 increased expression of follistatin, a protein that binds myostatin, and promoted myogenic differentiation more than DHT did in that model (Kanno 2013). Both papers are cell-culture work. No human clinical trial of YK-11 has been published, so its pharmacokinetics, hormonal effects and liver tolerance in people are unknown.\u003c\/p\u003e\n\u003ctable\u003e\n\u003cthead\u003e\u003ctr\u003e\n\u003cth\u003eIdentifier\u003c\/th\u003e\n\u003cth\u003eYK-11\u003c\/th\u003e\n\u003c\/tr\u003e\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003eCAS number\u003c\/td\u003e\n\u003ctd\u003e1370003-76-1\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMolecular formula\u003c\/td\u003e\n\u003ctd\u003eC25H34O6\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMolecular weight\u003c\/td\u003e\n\u003ctd\u003e430.5 g\/mol\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eInChIKey\u003c\/td\u003e\n\u003ctd\u003eKCQHQCDHFVGNMK-PQUNLUOYSA-N\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003ePubChem CID\u003c\/td\u003e\n\u003ctd\u003e119058028\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003ch3\u003eAnimal and metabolism studies\u003c\/h3\u003e\n\u003cp\u003eWork in living animals is recent and sparse, and much of the published in vivo work concerns metabolism for doping control (Piper 2018). One study followed rats for five weeks, with and without swimming exercise, to look for unwanted effects in the brain (Dahleh 2024). Animals given YK-11 retained an aversive memory task less well, showed weaker BDNF signalling in the hippocampus, had a cytokine balance tilted towards inflammation and showed activation of proteins that drive programmed cell death. Exercise offset part of this. One rat study cannot say what happens in people, but its findings point towards harm rather than benefit.\u003c\/p\u003e\n\u003cp\u003eThe cell and animal findings summarised here are not claims about this product.\u003c\/p\u003e\n\u003ch2\u003eYK-11 in the UK: buying, legal status and what to check\u003c\/h2\u003e\n\u003cp\u003eYK-11 is not a licensed medicine in the UK, and it has never been licensed in any other country: it has no MHRA marketing authorisation, is not an authorised food supplement, and cannot lawfully be sold for human consumption. Free Muscle supplies it to adults aged 18 or over for laboratory research only. Because it is a synthetic steroid, its status under the Misuse of Drugs Act is less clear-cut than that of non-steroidal SARMs, and buyers should take their own advice. It is prohibited at all times in sport, as the detection section below explains. Buyers are responsible for the rules that apply to them, including any anti-doping code. Background on the class is in \u003ca href=\"\/en-ro\/blogs\/news\/what-are-sarms-the-2026-research-guide\"\u003eWhat are SARMs? The 2026 research guide\u003c\/a\u003e.\u003c\/p\u003e\n\u003ch3\u003eWhat a trustworthy UK listing shows\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eThe compound named precisely, ideally with its CAS number, not a nickname.\u003c\/li\u003e\n\u003cli\u003eA stated strength per capsule and a capsule count, so total content can be worked out.\u003c\/li\u003e\n\u003cli\u003eA batch number on the pack, and a certificate of analysis carrying that number from a named laboratory.\u003c\/li\u003e\n\u003cli\u003eA plain statement when no certificate exists for the batch in stock, instead of a generic PDF.\u003c\/li\u003e\n\u003cli\u003eA named seller, an 18+ restriction, plain packaging and tracked delivery.\u003c\/li\u003e\n\u003cli\u003eNo instructions for human use and no outcome promises.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eHow this listing measures up\u003c\/h3\u003e\n\u003cp\u003eThe 10 mg and 60-capsule figures are iMuscle's label claim, not a figure we have assayed. A certificate is shown only where iMuscle supplies one for the batch we hold, and we tell you when there is none. Testing is the real difference from Free Muscle's own-brand \u003ca href=\"\/en-ro\/products\/yk-11-10mg\"\u003eYK-11 10 mg\u003c\/a\u003e, which carries the same label strength and capsule count but is assayed batch by batch at Janoshik Analytical. Orders ship from FreeMuscle's UK operations in Scunthorpe by free tracked UK delivery in plain packaging; orders placed before 2pm Monday to Friday are processed the same working day, EU delivery takes 3 to 7 working days, and unopened items can be returned within 30 days (\u003ca href=\"\/en-ro\/pages\/shipping\"\u003edelivery\u003c\/a\u003e, \u003ca href=\"\/en-ro\/pages\/guarantee\"\u003ereturns\u003c\/a\u003e). Our \u003ca href=\"\/en-ro\/blogs\/news\/how-to-choose-a-sarms-supplier-uk-checklist\"\u003eUK supplier checklist\u003c\/a\u003e covers each test in more detail.\u003c\/p\u003e\n\u003ch2\u003eCapsules compared with other forms\u003c\/h2\u003e\n\u003cp\u003eYK-11 is offered as capsules, as solutions in dropper bottles and as loose powder, and injectable versions are widely searched for. No study has compared these forms and none has been evaluated in a clinical trial, so the differences below concern what can be measured and kept stable, not effect. This listing is capsules.\u003c\/p\u003e\n\u003ctable\u003e\n\u003cthead\u003e\u003ctr\u003e\n\u003cth\u003eForm\u003c\/th\u003e\n\u003cth\u003eWhat fixes the amount per unit\u003c\/th\u003e\n\u003cth\u003eWhat a certificate can confirm\u003c\/th\u003e\n\u003cth\u003eMain stability concern\u003c\/th\u003e\n\u003c\/tr\u003e\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003eCapsule\u003c\/td\u003e\n\u003ctd\u003eFill weight set at manufacture\u003c\/td\u003e\n\u003ctd\u003eContent per capsule and purity, if finished capsules are tested\u003c\/td\u003e\n\u003ctd\u003eHumidity once the container is opened\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eSolution\u003c\/td\u003e\n\u003ctd\u003eConcentration, and whether the compound stays evenly dissolved\u003c\/td\u003e\n\u003ctd\u003eConcentration per millilitre on the test date\u003c\/td\u003e\n\u003ctd\u003eConstant contact with solvent\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003ePowder\u003c\/td\u003e\n\u003ctd\u003eWeighing by the researcher\u003c\/td\u003e\n\u003ctd\u003ePurity of the bulk material\u003c\/td\u003e\n\u003ctd\u003eHumidity and handling losses\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eInjectable\u003c\/td\u003e\n\u003ctd\u003eConcentration, carrier and sterility\u003c\/td\u003e\n\u003ctd\u003eUsually concentration only; sterility needs separate testing\u003c\/td\u003e\n\u003ctd\u003eNo published characterisation for YK-11\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003cp\u003eTwo points follow from the chemistry. First, the Cologne anti-doping group described the orthoester-derived group on the D-ring of YK-11 as arguably labile and found no unchanged YK-11 in urine after administration (Piper 2018). Groups that break down readily in the body are also exposed to hydrolysis in a solution containing water or acid, one reason a dry fill is the easier form to store and assay. Second, YK-11 is not a peptide but a small steroid, so the argument that peptides are largely digested when swallowed, discussed in \u003ca href=\"\/en-ro\/blogs\/news\/do-oral-peptides-work\"\u003eDo oral peptides actually work?\u003c\/a\u003e, does not apply. That is a point about chemistry, not a claim about what a capsule does. Fill accuracy is itself a manufacturing variable, which is why the certificate section below asks whether finished capsules or raw powder were tested.\u003c\/p\u003e\n\u003ch2\u003eYK-11 compared with RAD-140\u003c\/h2\u003e\n\u003cp\u003eRAD-140 (testolone) is the compound most often set beside YK-11, and iMuscle sells both in the same format: \u003ca href=\"\/en-ro\/products\/imuscle-testolon-rad-140-60-10mg\"\u003eiMuscle Testolone RAD-140\u003c\/a\u003e is also labelled 10 mg per capsule, 60 capsules. Identical label arithmetic hides two different molecules with very different evidence bases.\u003c\/p\u003e\n\u003ctable\u003e\n\u003cthead\u003e\u003ctr\u003e\n\u003cth\u003ePoint\u003c\/th\u003e\n\u003cth\u003eYK-11\u003c\/th\u003e\n\u003cth\u003eRAD-140\u003c\/th\u003e\n\u003c\/tr\u003e\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003eChemical class\u003c\/td\u003e\n\u003ctd\u003eSteroid, 19-nor-pregnane derivative\u003c\/td\u003e\n\u003ctd\u003eNon-steroidal SARM\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eFormula and molecular weight\u003c\/td\u003e\n\u003ctd\u003eC25H34O6, 430.5\u003c\/td\u003e\n\u003ctd\u003eC20H16ClN5O2, 393.8\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOrigin\u003c\/td\u003e\n\u003ctd\u003eAcademic group, Toho University, 2011\u003c\/td\u003e\n\u003ctd\u003ePharmaceutical programme, Radius Health\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eAction at the androgen receptor\u003c\/td\u003e\n\u003ctd\u003ePartial agonist in cell assays; induced follistatin in mouse muscle cells\u003c\/td\u003e\n\u003ctd\u003eAgonist designed for tissue selectivity, characterised in rats and monkeys\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003ePublished human data\u003c\/td\u003e\n\u003ctd\u003eNo clinical trial\u003c\/td\u003e\n\u003ctd\u003eOne phase 1 study in 22 women with advanced breast cancer\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMain adverse findings\u003c\/td\u003e\n\u003ctd\u003eMemory, inflammatory and cell-death changes in rat hippocampus\u003c\/td\u003e\n\u003ctd\u003eRaised liver enzymes, the most frequent adverse events in the phase 1 study\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eUK status\u003c\/td\u003e\n\u003ctd\u003eNot a licensed medicine; steroid structure makes its drugs-law status less clear-cut\u003c\/td\u003e\n\u003ctd\u003eNot a licensed medicine; research use only\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eWADA\u003c\/td\u003e\n\u003ctd\u003eSection S1, prohibited at all times\u003c\/td\u003e\n\u003ctd\u003eSection S1, prohibited at all times\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003cp\u003eThe evidence gap is the main difference. RAD-140's human data come from one oncology study in patients with advanced disease (LoRusso 2022), yet that study still produced a measured half-life and a documented liver-enzyme signal. YK-11 has neither, so any statement about how it behaves in people rests on nothing published. The regulatory picture differs for a structural reason: a steroid backbone brings YK-11 closer to the anabolic steroids that UK drugs law already controls, whereas RAD-140 is chemically unrelated to them. Neither compound is approved anywhere, both are banned in sport, and nothing here ranks one above the other for any purpose. Brands of RAD-140 are compared on the \u003ca href=\"\/en-ro\/collections\/rad-140\"\u003eRAD-140 collection page\u003c\/a\u003e, and its research is summarised in \u003ca href=\"\/en-ro\/blogs\/news\/rad-140-testolone-what-the-research-says\"\u003eRAD-140 (Testolone): what the research says\u003c\/a\u003e.\u003c\/p\u003e\n\u003ch2\u003eReading the certificate of analysis for this product\u003c\/h2\u003e\n\u003cp\u003eiMuscle is a third-party brand, so any certificate of analysis is the manufacturer's, not ours. Where iMuscle supplies a COA for the batch we hold, we show it or send it by email on request; where none exists for the batch in stock, we say so rather than show a generic document. Free Muscle-brand compounds are assayed batch by batch at Janoshik Analytical; that programme does not cover iMuscle. When an iMuscle certificate is available, these are the fields to check.\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eBatch or lot number\u003c\/strong\u003e: the same number as the one printed on your pack.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eIdentity\u003c\/strong\u003e: the method (HPLC against a YK-11 reference standard, LC-MS, or both) and a result consistent with C25H34O6, molecular weight 430.5. YK-11 has a defined E geometry at its side-chain double bond, and an isomer would share its mass, so a retention-time match to a reference standard is stronger evidence than mass alone.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePurity\u003c\/strong\u003e: the main peak as a percentage of everything the HPLC detected. The remainder may be synthesis by-products or breakdown products.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eContent per capsule\u003c\/strong\u003e: the milligrams found in finished capsules, to set against the stated 10 mg; a raw-powder result is not the same measurement.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eTest date and laboratory\u003c\/strong\u003e: when and by whom the analysis was run.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eFor this brand, a missing field has a specific meaning. With no certificate for the batch in stock, nothing independent confirms identity, purity or content, and the 10 mg figure stays a label claim. Without a content figure, a certificate confirms what the material is but not the fill; without a batch number, it cannot be tied to your pack; without a named laboratory, it cannot be checked with the lab that issued it. Email us through the \u003ca href=\"\/en-ro\/pages\/contact\"\u003econtact page\u003c\/a\u003e with the product name and the batch number on your pack and we will tell you what we hold. See \u003ca href=\"\/en-ro\/pages\/lab-tests\"\u003elab tests\u003c\/a\u003e and \u003ca href=\"\/en-ro\/blogs\/news\/how-to-read-a-certificate-of-analysis\"\u003ehow to read a COA\u003c\/a\u003e.\u003c\/p\u003e\n\u003ch2\u003eDetection, sport and testing\u003c\/h2\u003e\n\u003cp\u003eYK-11 is prohibited at all times, in and out of competition, under section S1 (anabolic agents) of the WADA Prohibited List, which UK Anti-Doping applies in the UK. Under the strict liability principle of the anti-doping code, an athlete is responsible for any prohibited substance found in their sample, whatever the product label said.\u003c\/p\u003e\n\u003cp\u003eLaboratories can find it. In an elimination study with deuterium-labelled YK-11, the Cologne anti-doping laboratory identified fourteen urinary metabolites and no unchanged YK-11 in urine. Unconjugated metabolites had gone within 24 hours, while glucuronide and sulfate conjugates were still traceable after more than 48 hours, and two glucuronidated metabolites were added to the laboratory's routine screen for anabolic agents (Piper 2018). The study itself was prompted by the detection of YK-11 in a seized black-market product.\u003c\/p\u003e\n\u003cp\u003eThose timings describe how long metabolites were traced in one study; they are not a detection window. With no published human pharmacokinetic study, there is no established half-life for YK-11 in people and the full window is unknown. The reliable statement is that YK-11 is detectable.\u003c\/p\u003e\n\u003ch2\u003eStorage, stability and handling\u003c\/h2\u003e\n\u003cp\u003eNo stability study of YK-11 capsules has been published, so storage practice rests on general chemistry and the manufacturer's label. Water can cleave the ester and orthoester-derived groups in the molecule, and heat and light degrade most organic research materials.\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eKeep the capsules in the original closed container, cool, dry and away from direct sunlight and heat.\u003c\/li\u003e\n\u003cli\u003eClose the lid promptly and leave any desiccant sachet in place; humidity is the main avoidable threat.\u003c\/li\u003e\n\u003cli\u003eKeep the label intact: the batch number links the capsules to any certificate and to any quality query.\u003c\/li\u003e\n\u003cli\u003eRecord the date of receipt and any printed expiry date; without one, a certificate's test date is the only dated reference.\u003c\/li\u003e\n\u003cli\u003eSoft, sticky, discoloured or clumped capsules suggest moisture damage; note the batch number and contact us.\u003c\/li\u003e\n\u003cli\u003eKeep out of reach of children and pets, handle with gloves in a clean area free of food and drink, and dispose of unwanted material under local chemical-waste rules.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eIf you might return the item, leave it sealed: returns are accepted within 30 days on unopened items only.\u003c\/p\u003e\n\u003ch2\u003eGlossary\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003ePartial agonist\u003c\/strong\u003e: a ligand whose maximum effect at a receptor stays below that of a reference hormone; for YK-11 in cell assays the reference was DHT.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eDHT (dihydrotestosterone)\u003c\/strong\u003e: a potent androgen made from testosterone in tissues such as skin and prostate.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e19-nor steroid\u003c\/strong\u003e: a steroid missing the carbon atom usually found at position 19, the skeleton YK-11 shares with nandrolone.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFollistatin\u003c\/strong\u003e: a glycoprotein that captures myostatin and activin outside the cell; the 2013 C2C12 study reported a rise in its expression, the basis of the myostatin-inhibitor label.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eC2C12 cells\u003c\/strong\u003e: a mouse muscle precursor line that fuses into muscle-like fibres in culture.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eHydrolysis\u003c\/strong\u003e: cleavage of a chemical bond by water, the main storage risk for the ester and orthoester-derived groups in YK-11.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eLabel claim\u003c\/strong\u003e: the amount a manufacturer prints per capsule, here 10 mg, unconfirmed until a content assay is run.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eRetention time\u003c\/strong\u003e: how long a compound takes to pass through an HPLC column, compared against a reference standard to support identity.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eConjugated metabolite\u003c\/strong\u003e: a breakdown product linked to glucuronic acid or sulfate for excretion; these were the longest-traced YK-11 markers in the Cologne study.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2\u003eAbout iMuscle YK-11\u003c\/h2\u003e\u003cp\u003eThe YK-11 pot from iMuscle has a red label with YK 11 in the centre and the iMUSCLE mark on its black panel above. Its front box states 60 capsules, 10 mg each; the side panel gives 10 mg of YK 11 per capsule, the compound's systematic name as a methyl ester, and iMuscle's line claiming purity tested above 97%. The brand's Romanian site lists the pot as YK 11, \"60\/10mg\".\u003c\/p\u003e\u003cp\u003eiMuscle's About page explains its testing policy in its own terms: because SARMs are unregulated and raw material need not meet any standard, it says it tests all lots at an independent European laboratory; the quality page adds a 97% purity minimum for raw material. Those are the brand's statements. YK-11 also features in two iMuscle stacks we list, \u003ca href=\"\/en-ro\/products\/imuscle-testolon-yk11-ibutamoren\"\u003eTestolon, YK-11 and Ibutamoren\u003c\/a\u003e and \u003ca href=\"\/en-ro\/products\/imuscle-ligandrol-testolon-yk-11\"\u003eLigandrol, Testolon and YK-11\u003c\/a\u003e; the rest of the range is on the \u003ca href=\"\/en-ro\/collections\/brand-imuscle\"\u003eiMuscle brand page\u003c\/a\u003e.\u003c\/p\u003e\u003cp\u003eUnlike the SARMs it is sold beside, YK-11 has a steroid skeleton. Its literature is mostly cell work published since 2011, with a few rat studies, and it has never been tested in people; its steroid structure leaves its UK legal position less settled than that of the non-steroidal SARMs, and WADA bans it under S1. Free Muscle also sells a 10 mg, 60-capsule YK-11 under its own brand, with each batch assayed at Janoshik Analytical; both appear on the \u003ca href=\"\/en-ro\/collections\/yk-11\"\u003eYK-11 collection\u003c\/a\u003e.\u003c\/p\u003e\u003cp\u003eThe gallery shows protocol RN18695 from 2021, which has no lot number, alongside an HPLC print-out for YK11 with lot 20210911. Neither is tied to the pots in stock now. Check your pot for a lot or batch code and, if one is printed, \u003ca href=\"\/en-ro\/pages\/contact\"\u003esend it to us\u003c\/a\u003e; we will pass on any certificate iMuscle provides for that lot, or tell you plainly that there is none.\u003c\/p\u003e\u003ch2\u003eRelated\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003ca href=\"\/en-ro\/collections\/yk-11\"\u003eAll brands of YK-11\u003c\/a\u003e, compared on strength, pack size and batch testing\u003c\/li\u003e\n\u003cli\u003e\n\u003ca href=\"\/en-ro\/collections\/brand-imuscle\"\u003eAll iMuscle products\u003c\/a\u003e stocked at Free Muscle\u003c\/li\u003e\n\u003cli\u003e\u003ca href=\"\/en-ro\/blogs\/news\/yk-11-what-is-known\"\u003eYK-11: a steroidal compound sold as a SARM, what is actually known\u003c\/a\u003e\u003c\/li\u003e\n\u003cli\u003e\n\u003ca href=\"\/en-ro\/collections\/rad-140\"\u003eRAD-140 (testolone)\u003c\/a\u003e and the full \u003ca href=\"\/en-ro\/collections\/sarms\"\u003eSARMs range\u003c\/a\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003ca href=\"\/en-ro\/pages\/shipping\"\u003eDelivery\u003c\/a\u003e and \u003ca href=\"\/en-ro\/pages\/guarantee\"\u003ereturns\u003c\/a\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cem\u003eResearch compounds sold by Free Muscle are supplied for laboratory research use only and are not for human consumption. They are not authorised as medicines by the MHRA, EMA or FDA, are not food supplements, and are sold only to adults aged 18 or over. Nothing on this page is medical or dosing advice.\u003c\/em\u003e\u003c\/p\u003e\n\u003ch2\u003eReferences\u003c\/h2\u003e\n\u003col\u003e\n\u003cli\u003eKanno Y, et al. (17alpha,20E)-17,20-[(1-methoxyethylidene)bis(oxy)]-3-oxo-19-norpregna-4,20-diene-21-carboxylic acid methyl ester (YK11) is a partial agonist of the androgen receptor. Biol Pharm Bull. 2011;34(3):318-23. \u003ca href=\"https:\/\/pubmed.ncbi.nlm.nih.gov\/21372378\/\" rel=\"noopener\"\u003ePMID: 21372378\u003c\/a\u003e.\u003c\/li\u003e\n\u003cli\u003eKanno Y, et al. Selective androgen receptor modulator, YK11, regulates myogenic differentiation of C2C12 myoblasts by follistatin expression. Biol Pharm Bull. 2013;36(9):1460-5. \u003ca href=\"https:\/\/pubmed.ncbi.nlm.nih.gov\/23995658\/\" rel=\"noopener\"\u003ePMID: 23995658\u003c\/a\u003e.\u003c\/li\u003e\n\u003cli\u003ePiper T, et al. Studies on the in vivo metabolism of the SARM YK11: Identification and characterization of metabolites potentially useful for doping controls. Drug Test Anal. 2018;10(11-12):1646-56. \u003ca href=\"https:\/\/pubmed.ncbi.nlm.nih.gov\/30379415\/\" rel=\"noopener\"\u003ePMID: 30379415\u003c\/a\u003e.\u003c\/li\u003e\n\u003cli\u003eDahleh MMM, et al. From gains to gaps? How Selective Androgen Receptor Modulator (SARM) YK11 impact hippocampal function: In silico, in vivo, and ex vivo perspectives. Chem Biol Interact. 2024;394:110971. \u003ca href=\"https:\/\/pubmed.ncbi.nlm.nih.gov\/38521455\/\" rel=\"noopener\"\u003ePMID: 38521455\u003c\/a\u003e.\u003c\/li\u003e\n\u003cli\u003eLoRusso P, et al. A First-in-Human Phase 1 Study of a Novel Selective Androgen Receptor Modulator (SARM), RAD140, in ER+\/HER2- Metastatic Breast Cancer. Clin Breast Cancer. 2022;22(1):67-77. \u003ca href=\"https:\/\/pubmed.ncbi.nlm.nih.gov\/34565686\/\" rel=\"noopener\"\u003ePMID: 34565686\u003c\/a\u003e.\u003c\/li\u003e\n\u003c\/ol\u003e","brand":"iMuscle","offers":[{"title":"Default Title","offer_id":48468980400354,"sku":null,"price":42.99,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0772\/3499\/5426\/files\/YK11_720x_d356e17a-105c-480a-834b-d0c2826f4875.jpg?v=1789931421"},{"product_id":"thoroughbred-labs-5-amino-1mq","title":"Thoroughbred Labs 5-Amino-1MQ","description":"\u003cp\u003e\u003cstrong\u003eThoroughbred Labs 5-Amino-1MQ\u003c\/strong\u003e is supplied as a 60-capsule tub, and Thoroughbred Labs prints 50 mg per capsule in the side FACTS panel and repeats it in its own product title. It is supplied through the \u003ca href=\"\/en-ro\/pages\/muscle-market\"\u003eMuscle Market\u003c\/a\u003e range for laboratory research only, is not for human consumption, and is sold to adults aged 18 and over. Below: what the published research on 5-Amino-1MQ reports, what the label documents, how batch certificates are handled for Thoroughbred Labs products, and the questions most often asked about buying 5-Amino-1MQ in the UK.\u003c\/p\u003e\n\u003ch2\u003eAbout 5-Amino-1MQ\u003c\/h2\u003e\n\u003cp\u003e5-Amino-1MQ (5-amino-1-methylquinolinium) is a small-molecule inhibitor of nicotinamide N-methyltransferase (NNMT), an enzyme expressed in fat tissue and liver that methylates nicotinamide and in doing so influences the cellular availability of NAD+ precursors and S-adenosylmethionine. It was developed by a group at the University of Texas Medical Branch as a membrane-permeable, selective NNMT inhibitor. It is not a SARM and not a peptide.\u003c\/p\u003e\n\u003cp\u003eInterest in the enzyme came first. A 2014 Nature paper found that NNMT expression was raised in the white fat and liver of obese and diabetic mice, and that lowering NNMT in those tissues with an antisense oligonucleotide protected mice against diet-induced obesity, with higher energy expenditure and higher fat-tissue levels of S-adenosylmethionine and NAD+ (Kraus et al., 2014). That work used a genetic tool, not a drug, but it made NNMT a target, and small-molecule inhibitors such as 5-Amino-1MQ followed.\u003c\/p\u003e\n\u003cp\u003eIn a 2018 study, diet-induced obese mice given an NNMT inhibitor from this series showed lower body weight and white fat mass and lower plasma cholesterol than vehicle-treated animals over the treatment period (Neelakantan et al., 2018). A 2019 study in aged mice reported that the inhibitor increased muscle stem cell activity and larger muscle fibres after an experimental injury (Neelakantan et al., 2019). Both studies used subcutaneous injection in mice over a few weeks, the same laboratory produced both, and neither was designed to assess long-term toxicity. A 2021 study from a collaborating team developed an assay for the compound in rat plasma and urine and measured its behaviour in rats after intravenous and oral administration (Awosemo et al., 2021). There are no human trials, no human pharmacokinetic data and no safety data in people, and the compound has never been approved as a medicine. It is frequently sold alongside claims that nothing published supports. Nothing above is a claim about this product.\u003c\/p\u003e\n\u003cp\u003eIn chemical terms, PubChem (CID 950107) records 5-amino-1-methylquinolinium under CAS number 685079-15-6, with the formula C10H11N2+ and a mass of 159.21 for the ion. The plus sign matters: the ring nitrogen carries a permanent positive charge, so the substance cannot exist on its own as a neutral powder and is always supplied as a salt paired with a negative counter-ion. Its systematic name is 1-methylquinolin-1-ium-5-amine.\u003c\/p\u003e\n\u003ch2\u003eThis listing\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003eManufacturer: Thoroughbred Labs\u003c\/li\u003e\n\u003cli\u003eCompound: 5-Amino-1MQ\u003c\/li\u003e\n\u003cli\u003eForm: Capsules\u003c\/li\u003e\n\u003cli\u003ePack size: 60 capsules\u003c\/li\u003e\n\u003cli\u003eStrength: 50 mg per capsule, per the Thoroughbred Labs FACTS panel; 3,000 mg per tub as labelled\u003c\/li\u003e\n\u003cli\u003eBatch certificate of analysis: shown where Thoroughbred Labs supplies one for the batch we hold\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2\u003e5-Amino-1MQ in the UK: buying, legal status and what to check\u003c\/h2\u003e\n\u003cp\u003eSearches such as \"5-Amino-1MQ UK\" and \"5 amino 1mq UK buy\" ask whether a UK shop may sell it and how to judge a listing. 5-Amino-1MQ is not a licensed medicine in the UK, has not been assessed by the MHRA, and is not an authorised food supplement. It is not a controlled drug. It is sold for laboratory research to adults aged 18 and over and is not for human consumption. Whether or not it is named on the WADA Prohibited List, a substance with no current approval for human therapeutic use falls under section S0 (non-approved substances) and is prohibited at all times in sport. Anyone subject to anti-doping rules should consult the current list.\u003c\/p\u003e\n\u003cp\u003eA research listing that publishes instructions for use or promised results contradicts the terms it sells under. What it should publish is information a researcher can check against the pack and a laboratory report. The table sets out those checks for 5-Amino-1MQ and how this listing answers each.\u003c\/p\u003e\n\u003ctable\u003e\n\u003cthead\u003e\u003ctr\u003e\n\u003cth\u003eWhat to look for\u003c\/th\u003e\n\u003cth\u003eWhy it matters for 5-Amino-1MQ\u003c\/th\u003e\n\u003cth\u003eThis listing\u003c\/th\u003e\n\u003c\/tr\u003e\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003eStrength per capsule\u003c\/td\u003e\n\u003ctd\u003eWithout it, total content per pack cannot be calculated\u003c\/td\u003e\n\u003ctd\u003e50 mg per capsule, from the FACTS panel; 3,000 mg per tub as labelled\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eSalt form\u003c\/td\u003e\n\u003ctd\u003eThe compound is a charged ion, so the counter-ion changes the weight of each milligram of powder\u003c\/td\u003e\n\u003ctd\u003eNot stated on the label; check any certificate supplied\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eBatch number and matching certificate\u003c\/td\u003e\n\u003ctd\u003eConnects an analysis to the stock actually shipped\u003c\/td\u003e\n\u003ctd\u003eCertificate shown only where the manufacturer supplies one for the batch we hold\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eIdentifiable UK seller\u003c\/td\u003e\n\u003ctd\u003eGives an age check, a contact and a returns route\u003c\/td\u003e\n\u003ctd\u003eFreeMuscle, registered in Andorra, dispatching from Scunthorpe; 18+ only; 30-day returns on unopened items\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eDelivery\u003c\/td\u003e\n\u003ctd\u003eTraceable, discreet transit\u003c\/td\u003e\n\u003ctd\u003eFree tracked UK delivery in plain packaging; EU delivery 3-7 working days\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003cp\u003eOrders placed before 2pm Monday to Friday are processed the same working day. The full terms are on our \u003ca href=\"\/en-ro\/pages\/shipping\"\u003eshipping\u003c\/a\u003e and \u003ca href=\"\/en-ro\/pages\/guarantee\"\u003eguarantee\u003c\/a\u003e pages, and the \u003ca href=\"\/en-ro\/blogs\/news\/how-to-choose-a-sarms-supplier-uk-checklist\"\u003eUK supplier checklist\u003c\/a\u003e sets out the same tests for any shop. Our \u003ca href=\"\/en-ro\/blogs\/news\/what-are-sarms-the-2026-research-guide\"\u003eresearch guide\u003c\/a\u003e covers the wider legal picture for compounds sold on this basis.\u003c\/p\u003e\n\u003ch2\u003eReading the certificate of analysis for this product\u003c\/h2\u003e\n\u003cp\u003eTesting works differently here than on our own label. Free Muscle-brand batches are each assayed by Janoshik Analytical, an independent laboratory, and the certificate is emailed on request. Thoroughbred Labs is a third-party Muscle Market brand, so for this 5-Amino-1MQ we can show a certificate only if Thoroughbred Labs supplies one for the exact batch in stock. We do not pass off an undated or batchless PDF as a batch certificate. You can \u003ca href=\"\/en-ro\/pages\/contact\"\u003econtact us\u003c\/a\u003e to ask whether a certificate is held for the current batch. Where a certificate exists, the charged structure of 5-Amino-1MQ makes some fields more telling than usual.\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eIdentity\u003c\/strong\u003e: HPLC compares the sample with a reference standard by retention time; LC-MS adds a mass. Because the molecule is already charged, it appears in positive-mode mass spectrometry at about m\/z 159 without needing to pick up a proton, and the published rat assay monitored a transition from m\/z 159.1 to a fragment at m\/z 90 (Awosemo et al., 2021). A reported mass far from 159 points to a different substance.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePurity\u003c\/strong\u003e: the percentage of detected material that is 5-Amino-1MQ, usually from HPLC peak areas. It describes the powder, not the quantity in each capsule.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSalt form and content\u003c\/strong\u003e: a content figure should say whether it is expressed as the salt or as the ion alone. The same weighed powder gives a smaller number when only the 159.21 ion is counted, so two honest certificates can report different milligrams for identical capsules.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eBatch number\u003c\/strong\u003e: must match the number printed on the pack you hold.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eTest date and laboratory\u003c\/strong\u003e: identify when and by whom the analysis was done.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eMissing fields should be read at face value. A certificate with purity but no content figure confirms what the molecule is while leaving the 50 mg on the label unmeasured. A certificate without a batch number cannot be tied to this stock. If Thoroughbred Labs has supplied nothing for the current batch, this listing makes no analytical claim. Our \u003ca href=\"\/en-ro\/pages\/lab-tests\"\u003elab tests page\u003c\/a\u003e and the guide on \u003ca href=\"\/en-ro\/blogs\/news\/how-to-read-a-certificate-of-analysis\"\u003ehow to read a certificate of analysis\u003c\/a\u003e go further.\u003c\/p\u003e\n\u003ch2\u003eCapsules compared with other forms\u003c\/h2\u003e\n\u003cp\u003eSearch terms such as \"5 amino 1mq capsules UK\", \"5 amino 1mq tablets UK\", \"5 amino 1mq oral\" and \"5-amino-1mq subcutaneous\" show that the compound circulates as capsules, tablets, loose powder and injectable solutions. The published record for each route is thin and should be read carefully.\u003c\/p\u003e\n\u003cp\u003eThe two mouse efficacy papers gave the compound by subcutaneous injection, so they say nothing direct about capsules. The only published oral data come from the 2021 rat study, which found the compound in plasma after oral administration and reported an oral bioavailability of about 38 per cent in rats, meaning a sizeable fraction of the orally administered amount reached the circulation in those animals (Awosemo et al., 2021). Rat figures cannot be converted into human figures, and no study has measured oral absorption in people.\u003c\/p\u003e\n\u003cp\u003eBecause 5-Amino-1MQ is a small molecule rather than a chain of amino acids, it is not broken down by stomach and gut proteases in the way oral peptides are, which is why the \"peptide\" label sometimes attached to it in search results is misleading. Its permanent charge is a different consideration, since charged molecules often cross gut membranes less readily than neutral ones.\u003c\/p\u003e\n\u003cp\u003eOtherwise the formats differ in measurement. A capsule holds a weighed blend of active powder and filler, so consistency depends on even mixing; a solution depends on the compound staying dissolved and intact. Only a content assay could show whether each capsule holds the 50 mg the label states. None of this is a claim about effect.\u003c\/p\u003e\n\u003ch2\u003e5-Amino-1MQ compared with SLU-PP-332\u003c\/h2\u003e\n\u003cp\u003eThe compound most often searched alongside 5-Amino-1MQ is \u003ca href=\"\/en-ro\/collections\/slu-pp-332\"\u003eSLU-PP-332\u003c\/a\u003e, and Thoroughbred Labs also lists the two in a single research pack. They are grouped together because both are recent small molecules discussed in metabolic research, but they act at different points in the cell and have different histories.\u003c\/p\u003e\n\u003cp\u003e5-Amino-1MQ blocks an enzyme. By inhibiting NNMT it reduces the methylation of nicotinamide, which in animal and cell work was linked to changes in NAD+ and S-adenosylmethionine levels. SLU-PP-332 activates receptors: it is a pan-agonist of the oestrogen-related receptors ERR alpha, beta and gamma, nuclear receptors that switch on genes for mitochondrial energy production. One works by taking an enzyme out of play, the other by turning on a transcription programme. Neither acts at the androgen receptor, and neither is a peptide or a hormone.\u003c\/p\u003e\n\u003cp\u003eThe evidence bases are alike in shape. The published mouse studies of SLU-PP-332, looking at endurance and metabolic measures, are recent and come mainly from the group that developed it as an ERR agonist, just as the 5-Amino-1MQ work comes mainly from the group that developed that compound. Neither compound has been given to people in a published study.\u003c\/p\u003e\n\u003ctable\u003e\n\u003cthead\u003e\u003ctr\u003e\n\u003cth\u003ePoint of comparison\u003c\/th\u003e\n\u003cth\u003e5-Amino-1MQ\u003c\/th\u003e\n\u003cth\u003eSLU-PP-332\u003c\/th\u003e\n\u003c\/tr\u003e\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003eType of action\u003c\/td\u003e\n\u003ctd\u003eEnzyme inhibitor (NNMT)\u003c\/td\u003e\n\u003ctd\u003eReceptor agonist (ERR alpha, beta, gamma)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eChemistry\u003c\/td\u003e\n\u003ctd\u003eQuinolinium cation, supplied as a salt\u003c\/td\u003e\n\u003ctd\u003eNeutral acylhydrazone, C18H14N2O2\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eAnimal evidence\u003c\/td\u003e\n\u003ctd\u003eMouse studies from one laboratory\u003c\/td\u003e\n\u003ctd\u003eRecent mouse studies, mainly from one laboratory\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOral data\u003c\/td\u003e\n\u003ctd\u003eRat pharmacokinetics only\u003c\/td\u003e\n\u003ctd\u003eNone published\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eHuman data\u003c\/td\u003e\n\u003ctd\u003eNone\u003c\/td\u003e\n\u003ctd\u003eNone\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eWADA position\u003c\/td\u003e\n\u003ctd\u003eProhibited at all times under S0 (non-approved substances)\u003c\/td\u003e\n\u003ctd\u003eProhibited at all times under S0 (non-approved substances)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eUK status\u003c\/td\u003e\n\u003ctd\u003eUnlicensed; research use only\u003c\/td\u003e\n\u003ctd\u003eUnlicensed; research use only\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003cp\u003eThis comparison is pharmacological and regulatory only. Nothing here suggests that the two compounds act together or should be used together, and the \u003ca href=\"\/en-ro\/blogs\/news\/slu-pp-332-and-5-amino-1mq-research-guide\"\u003eSLU-PP-332 and 5-Amino-1MQ research guide\u003c\/a\u003e covers each in more depth.\u003c\/p\u003e\n\u003ch2\u003eDetection, sport and testing\u003c\/h2\u003e\n\u003cp\u003eFor anyone bound by an anti-doping code, 5-Amino-1MQ is prohibited at all times. Section S0 of the WADA Prohibited List covers any pharmacological substance not approved for human therapeutic use, and this compound has never been approved anywhere, so it is caught whether or not it is named. A compound missing from the named examples is therefore not permitted.\u003c\/p\u003e\n\u003cp\u003eOn detection, the published evidence is limited but clear in one respect. The 2021 rat study validated a liquid chromatography tandem mass spectrometry method that quantified 5-Amino-1MQ in both plasma and urine, the two sample types used in sport testing (Awosemo et al., 2021). What is missing is any excretion study in people, so there is no established detection window in human urine or blood. Any figure quoted online for how long it remains detectable is unsupported. The accurate position is that it is detectable in principle and the window has not been established.\u003c\/p\u003e\n\u003ch2\u003eStorage, stability and handling\u003c\/h2\u003e\n\u003cp\u003eWith no published stability data for these capsules, storage guidance rests on the compound's chemistry and laboratory practice. The amino group on the aromatic ring is the kind of structure that can slowly oxidise and discolour with air and light, and organic salts in powder form often take up moisture from humid air, which can cause clumping and soften gelatin or plant-based capsule shells. Heat speeds both processes.\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eKeep the capsules sealed in the original container, closing it promptly after opening and leaving any desiccant sachet inside.\u003c\/li\u003e\n\u003cli\u003eStore at room temperature or below, away from radiators, windowsills and direct sunlight.\u003c\/li\u003e\n\u003cli\u003eAvoid damp rooms such as bathrooms and kitchens.\u003c\/li\u003e\n\u003cli\u003eKeep the pack and its label together, since the batch number is the link to any certificate of analysis.\u003c\/li\u003e\n\u003cli\u003eKeep out of reach of children and separate from food and drink.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eCapsules that have stuck together, changed colour or developed an unusual smell should be set aside and not used for research. Standard laboratory rules on gloves, labelling and disposal of unwanted material apply.\u003c\/p\u003e\n\u003ch2\u003eGlossary\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eNNMT (nicotinamide N-methyltransferase)\u003c\/strong\u003e: the enzyme 5-Amino-1MQ inhibits; it transfers a methyl group to nicotinamide.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eNicotinamide\u003c\/strong\u003e: a form of vitamin B3 and a precursor of NAD+.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eNAD+\u003c\/strong\u003e: nicotinamide adenine dinucleotide, a coenzyme central to energy metabolism in cells.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eS-adenosylmethionine (SAM)\u003c\/strong\u003e: the methyl donor NNMT uses; it also supplies methyl groups to DNA and histones.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eQuinolinium\u003c\/strong\u003e: a quinoline ring with a positively charged nitrogen, the core of 5-Amino-1MQ.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCounter-ion\u003c\/strong\u003e: the negatively charged partner that turns a charged molecule into a stable salt.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eOral bioavailability\u003c\/strong\u003e: the fraction of an amount given by mouth that reaches the bloodstream unchanged.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePharmacokinetics\u003c\/strong\u003e: the study of how a substance is absorbed, distributed, broken down and eliminated.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eLC-MS\/MS\u003c\/strong\u003e: liquid chromatography with tandem mass spectrometry, used to identify and measure a compound by mass and fragments.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSection S0\u003c\/strong\u003e: the WADA category covering substances with no current approval for human therapeutic use.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCertificate of analysis (COA)\u003c\/strong\u003e: a laboratory report of identity, purity and content for a named batch.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2\u003eAbout Thoroughbred Labs 5-Amino-1MQ\u003c\/h2\u003e\n\u003cp\u003eThoroughbred Labs is a UK online brand, sold at thoroughbredlabs.co.uk in pounds, with 24\/7 Billing Limited (company number 14990140) named in its footer as the business for statutory purposes; Companies House shows that company as active and London-registered, incorporated in July 2023. The brand states that it has no premises open to customers and deals with enquiries by email or in writing. It offers 5-Amino-1MQ in two forms, a 10 mg freeze-dried vial and these 50 mg capsules, and pairs the capsules with SLU-PP-332 in a Research System. We stock the capsules and the Research System, not the vial.\u003c\/p\u003e\n\u003cp\u003eThe tub carries 5-AMINO-1MQ, 60 CAPSULES and the research-only band on its yellow front label; the side FACTS panel states 5-AMINO-1MQ 50mg per capsule; the fillers are microcrystalline cellulose and magnesium stearate, in a vegetarian capsule. At that stated figure the tub holds 3 g, the largest labelled amount per capsule among the Thoroughbred Labs tubs we stock. The label does not name the counter-ion. When we checked its certificate page on 2 October 2026 it listed a report for the 5-AMINO-1MQ vial (batch TBL5A890) but none for the capsules; a vial report describes different material, so this listing shows no certificate.\u003c\/p\u003e\n\u003cp\u003eThis is the only 5-Amino-1MQ capsule we stock, so the \u003ca href=\"\/en-ro\/collections\/5-amino-1mq\"\u003e5-Amino-1MQ collection\u003c\/a\u003e has no cross-brand comparison; the nearest point of reference is the brand's own \u003ca href=\"\/en-ro\/products\/thoroughbred-labs-research-system-slu-pp-332-amp-5-amino-1mq-ndash-thoroughbred-labs\"\u003eResearch System\u003c\/a\u003e, which contains a tub with the same panel. The \u003ca href=\"\/en-ro\/collections\/brand-thoroughbred-labs\"\u003eThoroughbred Labs collection\u003c\/a\u003e sets out the brand's labelling conventions and published documents. Check the seal, read the panel against this page, keep the batch number and ask us what paperwork exists for it.\u003c\/p\u003e\n\u003cp\u003e5-Amino-1MQ is a small-molecule NNMT inhibitor with rodent data only; nothing containing it is licensed, it is neither medicine nor food under UK law, and WADA section S0 covers it as a substance without any health-authority licence, so it is prohibited at all times. Adults only, laboratory research only.\u003c\/p\u003e\n\u003ch2\u003eRelated\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003e\u003ca href=\"\/en-ro\/collections\/5-amino-1mq\"\u003eAll brands of 5-Amino-1MQ we stock, compared\u003c\/a\u003e\u003c\/li\u003e\n\u003cli\u003e\u003ca href=\"\/en-ro\/collections\/brand-thoroughbred-labs\"\u003eAll Thoroughbred Labs products\u003c\/a\u003e\u003c\/li\u003e\n\u003cli\u003e\n\u003ca href=\"\/en-ro\/products\/thoroughbred-labs-slu\"\u003eThoroughbred Labs SLU-PP-332\u003c\/a\u003e and the \u003ca href=\"\/en-ro\/products\/thoroughbred-labs-research-system-slu-pp-332-amp-5-amino-1mq-ndash-thoroughbred-labs\"\u003eThoroughbred Labs research pack listing both compounds\u003c\/a\u003e\n\u003c\/li\u003e\n\u003cli\u003e\u003ca href=\"\/en-ro\/collections\/weight-loss\"\u003eMetabolic research compounds\u003c\/a\u003e\u003c\/li\u003e\n\u003cli\u003e\u003ca href=\"\/en-ro\/pages\/lab-tests\"\u003eBatch testing and certificates of analysis\u003c\/a\u003e\u003c\/li\u003e\n\u003cli\u003e\n\u003ca href=\"\/en-ro\/pages\/shipping\"\u003eDelivery\u003c\/a\u003e and \u003ca href=\"\/en-ro\/pages\/guarantee\"\u003ereturns\u003c\/a\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cem\u003eResearch compounds sold by Free Muscle are supplied for laboratory research use only and are not for human consumption. They are not authorised as medicines by the MHRA, EMA or FDA, are not food supplements, and are sold only to adults aged 18 or over. Nothing on this page is medical or dosing advice. Summaries of published research describe study findings and are not claims about any product.\u003c\/em\u003e\u003c\/p\u003e\n\u003ch2\u003eReferences\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003eKraus D, et al. Nicotinamide N-methyltransferase knockdown protects against diet-induced obesity. Nature. 2014;508(7495):258-262. \u003ca href=\"https:\/\/pubmed.ncbi.nlm.nih.gov\/24717514\/\" rel=\"noopener\"\u003ePMID: 24717514\u003c\/a\u003e.\u003c\/li\u003e\n\u003cli\u003eNeelakantan H, et al. Selective and membrane-permeable small molecule inhibitors of nicotinamide N-methyltransferase reverse high fat diet-induced obesity in mice. Biochem Pharmacol. 2018;147:141-152. \u003ca href=\"https:\/\/pubmed.ncbi.nlm.nih.gov\/29155147\/\" rel=\"noopener\"\u003ePMID: 29155147\u003c\/a\u003e.\u003c\/li\u003e\n\u003cli\u003eNeelakantan H, et al. Small molecule nicotinamide N-methyltransferase inhibitor activates senescent muscle stem cells and improves regenerative capacity of aged skeletal muscle. Biochem Pharmacol. 2019;163:481-492. \u003ca href=\"https:\/\/pubmed.ncbi.nlm.nih.gov\/30753815\/\" rel=\"noopener\"\u003ePMID: 30753815\u003c\/a\u003e.\u003c\/li\u003e\n\u003cli\u003eAwosemo O, et al. Development \u0026amp; validation of LC-MS\/MS assay for 5-amino-1-methyl quinolinium in rat plasma: Application to pharmacokinetic and oral bioavailability studies. J Pharm Biomed Anal. 2021;204:114255. \u003ca href=\"https:\/\/pubmed.ncbi.nlm.nih.gov\/34304009\/\" rel=\"noopener\"\u003ePMID: 34304009\u003c\/a\u003e.\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"Thoroughbred Labs","offers":[{"title":"Default Title","offer_id":48468980433122,"sku":null,"price":85.99,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0772\/3499\/5426\/files\/AMINO_fe46437e-6751-4d1e-acfc-495a52c066d7.png?v=1789931423"},{"product_id":"thoroughbred-labs-bpc157-peptide-capsule-ndash-thoroughbred-labs","title":"Thoroughbred Labs BPC-157 Peptide Capsules","description":"\u003cp\u003eThoroughbred Labs BPC-157 Peptide Capsules is a 60-capsule pack of BPC-157, a synthetic 15-amino-acid peptide, made by Thoroughbred Labs and stocked by Free Muscle in the \u003ca href=\"\/en-ro\/pages\/muscle-market\"\u003eMuscle Market\u003c\/a\u003e range. Thoroughbred Labs states 300 mcg per capsule, named as BPC-157 (Arginate) on the side FACTS panel of the tub and as 300 mcg on its own product page, which gives 18 mg of peptide per 60-capsule tub as labelled. The pack is supplied to adults aged 18 and over for laboratory research only. This page summarises the research on BPC-157, lists what we can confirm about the pack, sets out the UK legal position and anti-doping rules, and explains how certificates of analysis are handled for Thoroughbred Labs products.\u003c\/p\u003e\n\n\u003ch2\u003eAbout BPC-157\u003c\/h2\u003e\n\n\u003cp\u003eBPC-157 is a pentadecapeptide, a chain of 15 amino acids, that was isolated as a fragment of a gastric protein and then produced synthetically. The name stands for Body Protection Compound 157, and chemical databases also list it as BPC157, Bepecin and PL-10. As a peptide it is neither a SARM nor a steroid, and no regulator has approved it as a medicine.\u003c\/p\u003e\n\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eSequence\u003c\/strong\u003e: Gly-Glu-Pro-Pro-Pro-Gly-Lys-Pro-Ala-Asp-Asp-Ala-Gly-Leu-Val (GEPPPGKPADDAGLV)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCAS number\u003c\/strong\u003e: 137525-51-0\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMolecular formula\u003c\/strong\u003e: C62H98N16O22\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMolecular weight\u003c\/strong\u003e: 1419.5 g\/mol\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eInChIKey\u003c\/strong\u003e: HEEWEZGQMLZMFE-RKGINYAYSA-N\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePubChem CID\u003c\/strong\u003e: 9941957\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eWhat the published research reports\u003c\/h3\u003e\n\n\u003cp\u003eIn a 2011 laboratory study from Chang Gung University in Taiwan, using explants and fibroblasts taken from rat Achilles tendon, BPC-157 accelerated the outgrowth of fibroblasts from the explants, increased cell survival under oxidative stress and increased cell migration in culture, without directly changing cell proliferation. A 2016 review by the University of Zagreb group that first described the peptide collected its own rodent findings across gut, liver and central nervous system models, proposing links to the serotonin and dopamine systems and to several cell-signalling pathways.\u003c\/p\u003e\n\n\u003cp\u003eThe broadest overview so far is a 2025 systematic review from Case Western Reserve University covering the literature to June 2024. Of 544 records, 36 studies qualified: 35 preclinical and one clinical report, a retrospective series of 12 patients with knee pain given injections into the joint, with no control group. All sat at evidence level IV or V, the lowest tiers. The reviewers found no clinical safety data, summarised the half-life as under 30 minutes with metabolism in the liver and clearance by the kidneys, and listed unregulated manufacturing and contamination among the possible sources of harm.\u003c\/p\u003e\n\n\u003cp\u003eThese are laboratory and animal results. No human randomised controlled trial of BPC-157 has been published in a peer-reviewed journal, no human safety database exists, and most of the published animal work comes from a single research group. The preclinical work described here is not a claim about this product. A longer account is in \u003ca href=\"\/en-ro\/blogs\/news\/bpc-157-what-research-shows\"\u003eBPC-157: what the research actually shows\u003c\/a\u003e.\u003c\/p\u003e\n\n\u003ch2\u003eThis listing\u003c\/h2\u003e\n\n\u003cul\u003e\n\u003cli\u003eCompound: BPC-157\u003c\/li\u003e\n\u003cli\u003eBrand: Thoroughbred Labs\u003c\/li\u003e\n\u003cli\u003eForm: capsules\u003c\/li\u003e\n\u003cli\u003ePack size: 60 capsules\u003c\/li\u003e\n\u003cli\u003eStrength per capsule: 300 mcg, stated as BPC-157 (Arginate) on the FACTS panel\u003c\/li\u003e\n\u003cli\u003eTotal per pack: 18 mg (300 mcg x 60), as labelled\u003c\/li\u003e\n\u003cli\u003eBatch certificate: shown where Thoroughbred Labs supplies one for the batch we hold\u003c\/li\u003e\n\u003cli\u003eIntended use: laboratory research only, not for human consumption\u003c\/li\u003e\n\u003cli\u003eSold to adults aged 18 and over\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003cp\u003eAt a stated 300 mcg per capsule, this tub carries the largest labelled amount of the three BPC-157 capsule brands we stock: the \u003ca href=\"\/en-ro\/products\/biolab-bpc-157-hcl-200-mcg-60-caps\"\u003eBioLab listing\u003c\/a\u003e states 200 mcg as the hydrochloride and \u003ca href=\"\/en-ro\/products\/yakka-strength-yakka-strength-bpc157-peptide-capsules\"\u003eYakka Strength\u003c\/a\u003e states 250 mcg. Stated figures are label claims, and only a batch document with a measured content line checks them. See \u003ca href=\"\/en-ro\/blogs\/news\/price-per-mg-compare-sarms-peptides\"\u003ehow to compare by milligram\u003c\/a\u003e.\u003c\/p\u003e\n\n\u003ch2\u003eBPC-157 in the UK: buying, legal status and what to check\u003c\/h2\u003e\n\n\u003ch3\u003eCan BPC-157 be sold in the UK?\u003c\/h3\u003e\n\n\u003cp\u003eOnly as a research material. BPC-157 is not a licensed medicine in the UK: it has no MHRA marketing authorisation, is not an authorised food supplement, and cannot lawfully be sold for human consumption. It is not a controlled drug under the Misuse of Drugs Act 1971; what UK law regulates instead is presentation, since a product sold to treat or prevent disease is treated as a medicine and one sold to be eaten must satisfy food law. With no licensed BPC-157 product anywhere, the NHS does not prescribe it and no pharmacy can dispense it. Free Muscle supplies it to adults aged 18 or over for laboratory research only. It is banned in sport under WADA section S0, and buyers are responsible for the rules that apply to them, including any anti-doping code. The same framework covers our other \u003ca href=\"\/en-ro\/collections\/peptides\"\u003eresearch peptides\u003c\/a\u003e.\u003c\/p\u003e\n\n\u003ch3\u003eWhat to check before buying from any UK seller\u003c\/h3\u003e\n\n\u003cp\u003eThe manufacturing and contamination concerns raised in the 2025 review translate into checks that can all be made before ordering:\u003c\/p\u003e\n\n\u003col\u003e\n\u003cli\u003e\n\u003cstrong\u003eSeller and maker\u003c\/strong\u003e: a registered company you can contact, and a named manufacturer on the label.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eBatch\u003c\/strong\u003e: a lot number on the pack and a certificate of analysis carrying the same number, from a named laboratory.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eContent\u003c\/strong\u003e: a stated amount per capsule, so the pack can be compared and checked against the certificate.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eTerms\u003c\/strong\u003e: sale limited to adults, a laboratory-use label, and no instructions or promised outcomes anywhere on the listing.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eDelivery\u003c\/strong\u003e: tracked, in plain packaging, with a written returns policy.\u003c\/li\u003e\n\u003c\/ol\u003e\n\n\u003ch3\u003eHow this Thoroughbred Labs listing measures up\u003c\/h3\u003e\n\n\u003ctable\u003e\n\u003cthead\u003e\u003ctr\u003e\n\u003cth\u003eCheck\u003c\/th\u003e\n\u003cth\u003ePosition for this pack\u003c\/th\u003e\n\u003c\/tr\u003e\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003eSeller and maker\u003c\/td\u003e\n\u003ctd\u003eFreeMuscle, a business registered in Andorra, dispatching from Scunthorpe; manufactured by Thoroughbred Labs\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eBatch certificate\u003c\/td\u003e\n\u003ctd\u003eShown only where Thoroughbred Labs supplies one for the batch we hold; ask us before ordering\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eContent\u003c\/td\u003e\n\u003ctd\u003eStated: 300 mcg per capsule (arginate) on the FACTS panel; measured content depends on the batch report\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eTerms\u003c\/td\u003e\n\u003ctd\u003eLaboratory research only, adults 18 and over, no directions for use\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eDelivery\u003c\/td\u003e\n\u003ctd\u003eFree tracked UK delivery in plain packaging; orders before 2pm Monday to Friday processed the same working day; EU delivery 3-7 working days; unopened items returnable within 30 days\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\n\u003cp\u003eThe two points that depend on the manufacturer, the certificate and the stated content, are the ones to settle first. Reviews and forum threads cannot settle them, because they record buyers' impressions rather than what a given lot contained. Our \u003ca href=\"\/en-ro\/blogs\/news\/how-to-choose-a-sarms-supplier-uk-checklist\"\u003eUK supplier checklist\u003c\/a\u003e expands each point.\u003c\/p\u003e\n\n\u003ch2\u003eCapsules compared with other forms\u003c\/h2\u003e\n\n\u003cp\u003eBPC-157 is sold as capsules, compressed tablets, freeze-dried powder in vials and pre-mixed solutions. The molecule is the same in each; the study routes and the handling differ.\u003c\/p\u003e\n\n\u003cp\u003eMany rodent experiments injected the peptide into the abdominal cavity, and a number of others gave it intragastrically, by tube into the stomach. No pharmacokinetic study in people has been published, so there is no figure for how much intact peptide, if any, reaches the blood after a capsule is swallowed. The obstacle is general to peptides: pepsin and the intestinal proteases exist to cut peptide bonds, and an unmodified 15-residue chain is a typical substrate. The originating group describes BPC-157 as stable in human gastric juice, but surviving acid is not the same as crossing the gut wall.\u003c\/p\u003e\n\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eCapsules and tablets\u003c\/strong\u003e: dry powder, in practice blended with fillers because microgram amounts of peptide cannot be filled or pressed alone. Content should be uniform across a batch, but only a test on finished units shows whether it is; the 300 mcg on this label is the target figure to test against.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFreeze-dried vials\u003c\/strong\u003e: dry and comparatively stable until reconstituted; in solution, hydrolysis and microbial growth begin, and the amount in any measured volume depends on how accurately the vial was made up.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePre-mixed liquids\u003c\/strong\u003e: carry those drawbacks from the day of manufacture.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003cp\u003eNone of this implies that any format produces an effect in people. The routes are compared in \u003ca href=\"\/en-ro\/blogs\/news\/bpc-157-capsules-vs-injection-what-studies-used\"\u003eBPC-157 capsules vs injection: what the studies used\u003c\/a\u003e and \u003ca href=\"\/en-ro\/blogs\/news\/do-oral-peptides-work\"\u003edo oral peptides actually work\u003c\/a\u003e.\u003c\/p\u003e\n\n\u003ch2\u003eBPC-157 compared with TB-500\u003c\/h2\u003e\n\n\u003cp\u003eTB-500 is the peptide most often searched with BPC-157, and Thoroughbred Labs makes both, but the two are unrelated molecules from different research traditions.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eStructure.\u003c\/strong\u003e BPC-157 is a 15-residue peptide of 1419.5 g\/mol based on a gastric protein sequence. TB-500 is the market name for synthetic peptides based on thymosin beta-4, a 43-amino-acid protein present in most human cells best known for binding monomeric actin, a building block of the cell's internal scaffolding. Full thymosin beta-4 weighs about 4,963 g\/mol, three and a half times as much. Products sold as TB-500 may contain the full sequence or a shorter fragment, and the Thoroughbred Labs TB-500 listing does not state which.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eEvidence.\u003c\/strong\u003e For BPC-157 the 2025 review counted 35 preclinical studies and one uncontrolled clinical series. The full-length thymosin beta-4 protein went further, into clinical programmes for wounds, the cornea and cardiac repair, including a placebo-controlled intravenous tolerability study in healthy volunteers. Those studies used the full protein by injection or local application, not a capsule, and none produced an approved medicine. No trial has compared the two peptides, so neither can be ranked above the other. The thymosin beta-4 studies are referenced on our \u003ca href=\"\/en-ro\/products\/thoroughbred-labs-tb500-peptide-capsule-ndash-thoroughbred-labs\"\u003eThoroughbred Labs TB-500\u003c\/a\u003e page.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eRegulation and sport.\u003c\/strong\u003e Neither is a licensed medicine in the UK; both are sold only as research materials. WADA reaches the same result by different routes: BPC-157 falls under S0 because no health authority has approved it, while thymosin beta-4 and its derivatives, TB-500 named among them, are listed under S2 with peptide hormones and growth factors. Both are prohibited at all times.\u003c\/p\u003e\n\n\u003cp\u003eThoroughbred Labs also sells a \u003ca href=\"\/en-ro\/products\/thoroughbred-labs-research-system-bpc157-amp-tb500-capsule-ndash-thoroughbred-labs\"\u003eBPC-157 and TB-500 research system\u003c\/a\u003e containing both peptides; we publish no guidance on combining them. All TB-500 brands we hold are in the \u003ca href=\"\/en-ro\/collections\/tb-500\"\u003eTB-500 collection\u003c\/a\u003e, with background in the \u003ca href=\"\/en-ro\/blogs\/news\/tb-500-thymosin-beta-4-research-guide\"\u003eTB-500 research guide\u003c\/a\u003e.\u003c\/p\u003e\n\n\u003ch2\u003eReading the certificate of analysis for this product\u003c\/h2\u003e\n\n\u003cp\u003eAny certificate of analysis for this product comes from Thoroughbred Labs, not from Free Muscle. Our policy for third-party brands is simple: we show a COA where the manufacturer supplies one for the batch we hold, and not otherwise, and we never present a generic PDF as a batch certificate. Contact us to ask what documentation exists for the current batch before ordering. Free Muscle-brand compounds are batch-tested by the independent laboratory Janoshik Analytical; Thoroughbred Labs products are not in that programme. The report shown in this listing's gallery is one the brand commissioned for itself: a test report for batch 0526BP of its BPC157 Capsules, analysed on 1 September 2026, requesting an Arg-BPC-157 analysis. It prints a content figure of 490.83 mcg for Arg-BPC-157, the comment that arginine was not detected, a QR code and a verification key; it gives no purity percentage and does not say whether the figure is per capsule. Set the batch number on your tub against 0526BP. Where a Thoroughbred Labs certificate exists, read it field by field:\u003c\/p\u003e\n\n\u003ctable\u003e\n\u003cthead\u003e\u003ctr\u003e\n\u003cth\u003eField\u003c\/th\u003e\n\u003cth\u003eWhat it shows\u003c\/th\u003e\n\u003cth\u003eIf it is missing\u003c\/th\u003e\n\u003c\/tr\u003e\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003eIdentity (HPLC or LC-MS)\u003c\/td\u003e\n\u003ctd\u003eHPLC: a peak at the retention time of a BPC-157 reference standard. LC-MS adds mass: about 1418.7 Da for C62H98N16O22, usually seen near m\/z 710.4 (two charges) or 1419.7 (one).\u003c\/td\u003e\n\u003ctd\u003eNothing shows that the main peak is BPC-157.\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003ePurity (%)\u003c\/td\u003e\n\u003ctd\u003eThe share of the chromatogram taken by the BPC-157 peak; the rest is typically truncated sequences from synthesis.\u003c\/td\u003e\n\u003ctd\u003eNo measure of how clean the peptide is. Purity never states quantity.\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eContent per capsule\u003c\/td\u003e\n\u003ctd\u003eMeasured peptide per capsule, ideally stated as net peptide rather than total powder.\u003c\/td\u003e\n\u003ctd\u003eThe 300 mcg on the label remains unmeasured for that batch.\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eSample tested\u003c\/td\u003e\n\u003ctd\u003eFinished capsules or raw powder before filling.\u003c\/td\u003e\n\u003ctd\u003eA raw-powder result says nothing about the capsule fill.\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eBatch number, laboratory, test date\u003c\/td\u003e\n\u003ctd\u003eWhich lot, who tested it and when.\u003c\/td\u003e\n\u003ctd\u003eThe report cannot be tied to your pack or checked.\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\n\u003cp\u003eFor this product the content line matters most, as the check on the 300 mcg the label states. \u003ca href=\"\/en-ro\/pages\/contact\"\u003eContact us\u003c\/a\u003e with the lot number on your pack to ask what exists for current stock. More at \u003ca href=\"\/en-ro\/pages\/lab-tests\"\u003elab tests\u003c\/a\u003e and \u003ca href=\"\/en-ro\/blogs\/news\/how-to-read-a-certificate-of-analysis\"\u003ehow to read a COA\u003c\/a\u003e.\u003c\/p\u003e\n\n\u003ch2\u003eDetection, sport and testing\u003c\/h2\u003e\n\n\u003cp\u003eBPC-157 is prohibited under section S0 (non-approved substances) of the WADA Prohibited List, which captures any pharmacological substance not covered elsewhere on the List and without current approval by a government health authority for human therapeutic use. It applies in and out of competition in every sport bound by the World Anti-Doping Code, including testing by UK Anti-Doping. Under strict liability an athlete answers for any prohibited substance in their sample, whatever the label said.\u003c\/p\u003e\n\n\u003cp\u003eIn 2023 the Shanghai Anti-Doping Laboratory used BPC-157 labelled with carbon-13 and nitrogen-15 to map its breakdown in vitro, finding nine metabolites: eight formed by cleavage of amide bonds and one by a previously undescribed pathway. The team then validated a method for BPC-157 and its five main metabolites in human urine with detection limits of 0.01 to 0.11 ng\/mL. No study has published how long after exposure BPC-157 or its metabolites remain detectable in a person, so the accurate position is: detectable, window not established.\u003c\/p\u003e\n\n\u003ch2\u003eStorage, stability and handling\u003c\/h2\u003e\n\n\u003cp\u003eNo stability study of BPC-157 capsules has been published, so any expiry date on the pack is the limit to work to. The residues most prone to oxidation, methionine, cysteine and tryptophan, are absent from the BPC-157 sequence, so for dry powder the main threats are moisture, heat and light: water lets peptide bonds hydrolyse and powder clump, warmth speeds degradation, and capsule shells soften in damp air.\u003c\/p\u003e\n\n\u003cul\u003e\n\u003cli\u003eKeep the container tightly closed somewhere cool, dry and dark, away from radiators, sunny windowsills and bathrooms.\u003c\/li\u003e\n\u003cli\u003eIf refrigerated, let the pack reach room temperature before opening so condensation does not form, and leave any desiccant inside.\u003c\/li\u003e\n\u003cli\u003eKeep capsules in the original container with its lot number, and note the date the seal was first broken. Unopened packs can be returned within 30 days.\u003c\/li\u003e\n\u003cli\u003eHandle opened capsules with gloves, away from food and drink, out of reach of children and animals, and dispose of waste as chemical waste.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch2\u003eGlossary\u003c\/h2\u003e\n\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003ePreclinical study\u003c\/strong\u003e: research in cells or animals rather than people.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSystematic review\u003c\/strong\u003e: a literature review with a stated search method and fixed inclusion rules.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eRetrospective case series\u003c\/strong\u003e: a look back at patient records without a comparison group, unable to show cause and effect.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eHalf-life\u003c\/strong\u003e: the time for a substance's blood concentration to fall by half.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eProtease\u003c\/strong\u003e: an enzyme that cuts peptide bonds; pepsin and trypsin are digestive examples.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eExcipient\u003c\/strong\u003e: any capsule or tablet ingredient other than the compound, such as a filler.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMonoisotopic mass\u003c\/strong\u003e: a molecule's mass from the most abundant isotope of each element, the value mass spectrometry matches.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eLimit of detection\u003c\/strong\u003e: the lowest concentration at which a test reliably reports the analyte as present.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eStrict liability\u003c\/strong\u003e: the anti-doping rule that athletes are responsible for any prohibited substance in their sample.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMarketing authorisation\u003c\/strong\u003e: the MHRA licence required before a medicine can be sold in the UK.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch2\u003eAbout Thoroughbred Labs BPC-157 Peptide Capsules\u003c\/h2\u003e\n\n\u003cp\u003eThoroughbred Labs presents itself as a supplier of research peptides; most of its catalogue (about fifty products on 2 October 2026) is freeze-dried vials, BPC157 among them as a 10 mg vial, and the capsules here belong to its encapsulated line. The shop runs on thoroughbredlabs.co.uk in pounds sterling, trades online only, and gives 24\/7 Billing Limited, registered as company 14990140, as its statutory business, listed on Companies House as active, London-registered, incorporated July 2023.\u003c\/p\u003e\n\n\u003cp\u003eThe front of this tub carries the code BPC157, 60 CAPSULES and the research-only band; the side FACTS panel reads BPC-157 (Arginate) 300mcg per capsule, the fillers being microcrystalline cellulose and magnesium stearate, the shell vegetarian. The panel the brand shows for the BPC-157 tub in its BPC-157 and TB500 Research System reads BPC-157 300mcg with organic rice flour and no salt named, so the two BPC-157 panels in the range differ. As of 2 October 2026 this is one of only two Thoroughbred Labs capsule products with a published content report: its certificate page lists BPC157 Capsules, batch 0526BP, and the report is in this listing's gallery. The brand notes that a certificate applies to the batch it names and asks holders of other batches to request the current one.\u003c\/p\u003e\n\n\u003cp\u003eThree BPC-157 capsule brands sit in our \u003ca href=\"\/en-ro\/collections\/bpc-157\"\u003eBPC-157 collection\u003c\/a\u003e: this 300 mcg arginate tub, Yakka Strength at a stated 250 mcg and BioLab at 200 mcg as the hydrochloride. The salt named on each label differs, which matters when figures are compared. The \u003ca href=\"\/en-ro\/collections\/brand-thoroughbred-labs\"\u003eThoroughbred Labs collection\u003c\/a\u003e explains the brand's labelling and lists its published documents. To check a tub, match its batch number to 0526BP or ask us about a later batch, confirm the shrink seal and read the panel against this page.\u003c\/p\u003e\n\n\u003cp\u003eBPC-157 is a synthetic fifteen-residue peptide with an almost wholly preclinical literature and no licence anywhere; in the UK it is neither a medicine nor a food, and WADA treats it as a non-approved substance under S0, prohibited at all times. Sold to adults for laboratory research only.\u003c\/p\u003e\n\n\u003ch2\u003eRelated\u003c\/h2\u003e\n\n\u003cul\u003e\n\u003cli\u003e\n\u003ca href=\"\/en-ro\/collections\/bpc-157\"\u003eAll brands of BPC-157\u003c\/a\u003e, compared on strength, pack size and batch testing\u003c\/li\u003e\n\u003cli\u003e\n\u003ca href=\"\/en-ro\/collections\/brand-thoroughbred-labs\"\u003eAll Thoroughbred Labs products\u003c\/a\u003e stocked at Free Muscle\u003c\/li\u003e\n\u003cli\u003e\n\u003ca href=\"\/en-ro\/pages\/shipping\"\u003eDelivery\u003c\/a\u003e and \u003ca href=\"\/en-ro\/pages\/guarantee\"\u003ereturns\u003c\/a\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003cp\u003e\u003cem\u003eResearch compounds sold by Free Muscle are supplied for laboratory research use only and are not for human consumption. They are not authorised as medicines by the MHRA, EMA or FDA, are not food supplements, and are sold only to adults aged 18 or over. Nothing on this page is medical or dosing advice.\u003c\/em\u003e\u003c\/p\u003e\n\n\u003ch2\u003eReferences\u003c\/h2\u003e\n\n\u003col\u003e\n\u003cli\u003eChang CH, et al. The promoting effect of pentadecapeptide BPC 157 on tendon healing involves tendon outgrowth, cell survival, and cell migration. J Appl Physiol (1985). 2011;110(3):774-80. \u003ca href=\"https:\/\/pubmed.ncbi.nlm.nih.gov\/21030672\/\" rel=\"noopener\"\u003ePMID: 21030672\u003c\/a\u003e.\u003c\/li\u003e\n\u003cli\u003eSikiric P, et al. Brain-gut Axis and Pentadecapeptide BPC 157: Theoretical and Practical Implications. Curr Neuropharmacol. 2016;14(8):857-865. \u003ca href=\"https:\/\/pubmed.ncbi.nlm.nih.gov\/27138887\/\" rel=\"noopener\"\u003ePMID: 27138887\u003c\/a\u003e.\u003c\/li\u003e\n\u003cli\u003eVasireddi N, et al. Emerging Use of BPC-157 in Orthopaedic Sports Medicine: A Systematic Review. HSS J. 2025;21(4):485-495. \u003ca href=\"https:\/\/pubmed.ncbi.nlm.nih.gov\/40756949\/\" rel=\"noopener\"\u003ePMID: 40756949\u003c\/a\u003e.\u003c\/li\u003e\n\u003cli\u003eTian T, et al. Stable Isotope Labeling-Based Nontargeted Strategy for Characterization of the In Vitro Metabolic Profile of a Novel Doping BPC-157 in Doping Control by UHPLC-HRMS. Molecules. 2023;28(21):7345. \u003ca href=\"https:\/\/pubmed.ncbi.nlm.nih.gov\/37959764\/\" rel=\"noopener\"\u003ePMID: 37959764\u003c\/a\u003e.\u003c\/li\u003e\n\u003c\/ol\u003e\n","brand":"Thoroughbred Labs","offers":[{"title":"Default Title","offer_id":48468980465890,"sku":null,"price":34.99,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0772\/3499\/5426\/files\/BPC_f38b25f2-6121-4d0f-9b3d-b521bec69cff.png?v=1789931424"}],"url":"https:\/\/freemuscle.co.uk\/en-ro\/collections\/all.oembed","provider":"Free Muscle","version":"1.0","type":"link"}