{"title":"Peptides","description":"\u003cp\u003eThis collection lists the peptide research compounds we sell and dispatch from the UK. Free Muscle's own label covers BPC-150, TB-500 (Thymosin Beta-4), Ipamorelin, IGF-1 LR3 and Retatrutide; through Muscle Market we add BPC-157 and TB-500 capsules from BioLab, Thoroughbred Labs and Yakka Strength. All are supplied as capsules, 60 per pack, for laboratory research. Every Free Muscle batch is assayed by Janoshik Analytical, an independent laboratory, and the Certificate of Analysis for your batch is available on request; for other brands we show a certificate only where the manufacturer supplies one for the batch we hold. None of these is a licensed medicine or a food supplement.\u003c\/p\u003e\n\u003ch2\u003eWhat this collection covers\u003c\/h2\u003e\n\u003cp\u003ePeptides are short chains of amino acids. The ones here range from synthetic fragments of human proteins to engineered hormone analogues. Each has its own page with the published research, the brands we hold and how to compare them.\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003ca href=\"\/en-ro\/collections\/bpc-150\"\u003eBPC-150\u003c\/a\u003e, Free Muscle's own-label listing, supplied as 1000 mg capsules; the collection page explains how it relates to the BPC-157 literature.\u003c\/li\u003e\n\u003cli\u003e\n\u003ca href=\"\/en-ro\/collections\/tb-500\"\u003eTB-500 (Thymosin Beta-4)\u003c\/a\u003e, a synthetic form of a 43-amino-acid protein present in most human cells, studied mainly in animal wound models.\u003c\/li\u003e\n\u003cli\u003e\n\u003ca href=\"\/en-ro\/collections\/ipamorelin\"\u003eIpamorelin\u003c\/a\u003e, a pentapeptide growth hormone secretagogue that acts at the ghrelin receptor, which reached early clinical study and was not developed further.\u003c\/li\u003e\n\u003cli\u003e\n\u003ca href=\"\/en-ro\/collections\/igf-1-lr3\"\u003eIGF-1 LR3\u003c\/a\u003e, a long-arginine-3 analogue of insulin-like growth factor 1 used in cell culture research.\u003c\/li\u003e\n\u003cli\u003e\n\u003ca href=\"\/en-ro\/collections\/retatrutide\"\u003eRetatrutide (LY3437943)\u003c\/a\u003e, a GIP, GLP-1 and glucagon receptor triple agonist currently in late-stage clinical trials and not approved anywhere.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eOther brands' \u003ca href=\"\/en-ro\/collections\/bpc-157\"\u003eBPC-157\u003c\/a\u003e and \u003ca href=\"\/en-ro\/collections\/tb-500\"\u003eTB-500\u003c\/a\u003e capsules, listed through Muscle Market, appear in the grid above, with a certificate shown only where the manufacturer supplies one for the batch we hold.\u003c\/p\u003e\n\u003ch2\u003eA note on capsule peptides\u003c\/h2\u003e\n\u003cp\u003ePeptides are usually studied by injection because the gut breaks proteins down. The capsule format here is a matter of handling convenience for laboratory work, not a claim of oral activity. Our article \u003ca href=\"\/en-ro\/blogs\/news\/do-oral-peptides-work\"\u003eDo Oral Peptides Actually Work?\u003c\/a\u003e sets out what the literature does and does not show.\u003c\/p\u003e\n\u003ch2\u003eWhat the published research reports\u003c\/h2\u003e\n\u003cp\u003eThe evidence base varies widely by compound. Retatrutide has the strongest human data: in a 48-week phase 2 trial of 338 adults with obesity, mean weight change ranged from about 8 to 24 per cent depending on dose, against about 2 per cent on placebo, with gastrointestinal adverse events the most common finding and dose-related. BPC-157, by contrast, is supported almost entirely by rodent studies from a single research group, reviewed in 2018, with no controlled human trials published. None of this is a claim about the products on this page.\u003c\/p\u003e\n\u003ch2\u003eBatch testing and certificates of analysis\u003c\/h2\u003e\n\u003cp\u003eA certificate of analysis states what an independent laboratory identified in a specific batch and the purity it measured. Every Free Muscle batch goes to Janoshik Analytical, and the batch number is printed on the pack. Email us that number and we will send the certificate. A certificate without a batch number is marketing, not testing. Read more on our \u003ca href=\"\/en-ro\/pages\/lab-tests\"\u003elab tests page\u003c\/a\u003e.\u003c\/p\u003e\n\u003ch2\u003eWhere to buy research peptides in the UK: how to check a supplier\u003c\/h2\u003e\n\u003cp\u003eWhichever shop you buy research peptides from, check these five points before you order:\u003c\/p\u003e\n\u003col\u003e\n\u003cli\u003e\n\u003cstrong\u003eA batch number and a certificate for that batch.\u003c\/strong\u003e The pack should carry a batch number, and the seller should be able to show a certificate of analysis for that same batch from a named laboratory, with the test date. Every Free Muscle-brand batch is assayed by Janoshik Analytical, and we send the certificate for your batch on request.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eThe strength per capsule and the capsule count.\u003c\/strong\u003e With both figures you can work out the total milligrams in the pack and the price per milligram. If a listing does not state one of them, ask the seller before you order.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eResearch-use labelling and an age check.\u003c\/strong\u003e A research compound should be sold for laboratory research use only, not for human consumption, to adults aged 18 or over, with no dosing or usage advice. That is how every listing here is sold.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePrices in pounds sterling and tracked UK dispatch.\u003c\/strong\u003e UK delivery from us is free and tracked on every order, with no minimum spend, and usually arrives 2-3 working days after dispatch; orders placed before 2pm Monday to Friday are processed the same working day.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eA clear returns policy.\u003c\/strong\u003e Unopened items can be returned to us within 30 days.\u003c\/li\u003e\n\u003c\/ol\u003e\n\u003cp\u003eBrands on this page: \u003ca href=\"\/en-ro\/collections\/brand-free-muscle\"\u003eFree Muscle\u003c\/a\u003e, \u003ca href=\"\/en-ro\/collections\/brand-biolab\"\u003eBioLab\u003c\/a\u003e, \u003ca href=\"\/en-ro\/collections\/brand-thoroughbred-labs\"\u003eThoroughbred Labs\u003c\/a\u003e and \u003ca href=\"\/en-ro\/collections\/brand-yakka-strength\"\u003eYakka Strength\u003c\/a\u003e. The \u003ca href=\"\/en-ro\/blogs\/news\/how-to-choose-a-sarms-supplier-uk-checklist\"\u003eUK supplier checklist\u003c\/a\u003e and \u003ca href=\"\/en-ro\/pages\/lab-tests\"\u003ehow we test\u003c\/a\u003e go into more detail.\u003c\/p\u003e\n\n\u003ch2\u003eLegal status in the UK\u003c\/h2\u003e\n\u003cp\u003eNone of these peptides is a licensed medicine in the UK or an authorised food supplement. They are sold to adults for laboratory research and are not for human consumption. Under the WADA list, growth hormone secretagogues, IGF-1 analogues and thymosin beta-4 are prohibited at all times, and non-approved substances such as BPC-157 and retatrutide fall under the S0 category.\u003c\/p\u003e\n\u003ch2\u003eDelivery and returns\u003c\/h2\u003e\n\u003cp\u003eFree Muscle is the trading name of FreeMuscle, a business registered in Andorra, with UK operations and dispatch in Scunthorpe. Every order ships free with UK tracking in plain packaging; EU delivery takes 3 to 7 working days. Orders placed before 2pm Monday to Friday are processed the same working day, and unopened items can be returned within 30 days. See \u003ca href=\"\/en-ro\/pages\/shipping\"\u003eshipping\u003c\/a\u003e and \u003ca href=\"\/en-ro\/pages\/guarantee\"\u003eguarantee\u003c\/a\u003e. Customers must be 18 or over.\u003c\/p\u003e\n\u003ch2\u003eRelated reading\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003e\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\/li\u003e\n\u003cli\u003e\u003ca href=\"\/en-ro\/blogs\/news\/retatrutide-uk-licensing-status-trials-2026\"\u003eRetatrutide in the UK 2026: licensing status and trials\u003c\/a\u003e\u003c\/li\u003e\n\u003cli\u003e\u003ca href=\"\/en-ro\/blogs\/news\/sarms-vs-peptides-choosing-by-goal\"\u003eSARMs vs Peptides: Choosing by Goal\u003c\/a\u003e\u003c\/li\u003e\n\u003cli\u003e\u003ca href=\"\/en-ro\/blogs\/news\/how-to-read-a-certificate-of-analysis\"\u003eHow to Read a Certificate of Analysis (COA)\u003c\/a\u003e\u003c\/li\u003e\n\u003cli\u003eRelated collections: \u003ca href=\"\/en-ro\/collections\/sarms\"\u003eSARMs\u003c\/a\u003e, \u003ca href=\"\/en-ro\/collections\/mk-677\"\u003eMK-677 (Ibutamoren)\u003c\/a\u003e, \u003ca href=\"\/en-ro\/collections\/hgh\"\u003eHGH (Somatropin)\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\u003eJastreboff AM, et al. Triple-Hormone-Receptor Agonist Retatrutide for Obesity - A Phase 2 Trial. N Engl J Med. 2023;389(6):514-526. PMID: 37366315.\u003c\/li\u003e\n\u003cli\u003eSikiric P, et al. Novel Cytoprotective Mediator, Stable Gastric Pentadecapeptide BPC 157. Vascular Recruitment and Gastrointestinal Tract Healing. Curr Pharm Des. 2018;24(18):1990-2001. PMID: 29879879.\u003c\/li\u003e\n\u003c\/ol\u003e","products":[{"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":"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":"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"},{"product_id":"thoroughbred-labs-tb500-peptide-capsule-ndash-thoroughbred-labs","title":"Thoroughbred Labs TB-500 Peptide Capsules","description":"\u003cp\u003e\u003cstrong\u003eThoroughbred Labs TB-500 Peptide Capsules\u003c\/strong\u003e is a listing of TB-500, a peptide based on thymosin beta-4, supplied as 60 capsules per pack, with a stated strength of 300 mcg per capsule printed by Thoroughbred Labs on the tub's side panel and given in its 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 TB-500 and thymosin beta-4 reports, what the label documents, the UK legal and anti-doping position, how capsules differ from other formats, and how batch certificates are handled for Thoroughbred Labs products.\u003c\/p\u003e\n\u003ch2\u003eAbout TB-500\u003c\/h2\u003e\n\u003cp\u003eTB-500 is the name used in the research-compound market for synthetic peptides based on thymosin beta-4, a 43-amino-acid protein present in most human cells. Products sold as TB-500 may contain the full sequence or a shorter fragment around the actin-binding region; the label on this listing does not say which. Thymosin beta-4 binds monomeric actin and has been studied in cell migration, angiogenesis and wound repair models. It is a peptide, not a steroid and not a SARM: it has no steroid ring structure and does not act on the androgen receptor.\u003c\/p\u003e\n\u003ctable\u003e\n\u003cthead\u003e\u003ctr\u003e\n\u003cth\u003eIdentifier\u003c\/th\u003e\n\u003cth\u003eThymosin beta-4 (parent protein)\u003c\/th\u003e\n\u003c\/tr\u003e\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003eLength\u003c\/td\u003e\n\u003ctd\u003e43 amino acids\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMolecular formula\u003c\/td\u003e\n\u003ctd\u003eC212H350N56O78S\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMolecular weight\u003c\/td\u003e\n\u003ctd\u003eabout 4,963 g\/mol\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003ePubChem CID\u003c\/td\u003e\n\u003ctd\u003e45382195\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eInChIKey\u003c\/td\u003e\n\u003ctd\u003eUGPMCIBIHRSCBV-UHFFFAOYSA-N\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eActin-binding segment\u003c\/td\u003e\n\u003ctd\u003eresidues 17 to 23, LKKTETQ\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003ch3\u003eWhat the published research reports\u003c\/h3\u003e\n\u003cp\u003eA 2012 review by Goldstein and colleagues summarised the peptide's properties and the clinical programmes then under way in wounds, the cornea and cardiac repair. A 2010 randomised, placebo-controlled study gave intravenous pharmaceutical-grade thymosin beta-4 to healthy volunteers as single and repeated doses and reported no serious adverse events across the range tested; it was a tolerability study, not an efficacy study, and it used injection rather than a capsule. None of those programmes has produced an approved medicine, and no published human work shows that a peptide of this size survives oral administration.\u003c\/p\u003e\n\u003cp\u003eTwo analytical papers from 2012 describe what TB-500 products have actually contained. The doping control laboratory at Ghent University examined a TB-500 formulation by high-resolution mass spectrometry and identified the N-terminally acetylated 17-23 fragment of thymosin beta-4 in it. In the same year the racing laboratory of the Hong Kong Jockey Club described TB-500 as a veterinary preparation whose key ingredient was that acetylated seven-residue peptide, and published a method for finding it and its metabolites in horse urine and plasma. Both studies concern other products and animals, not this pack. Nothing above is a claim about this product.\u003c\/p\u003e\n\u003ch2\u003eThis listing\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003eManufacturer: Thoroughbred Labs\u003c\/li\u003e\n\u003cli\u003eCompound: TB-500 (Thymosin Beta-4)\u003c\/li\u003e\n\u003cli\u003eForm: Capsules\u003c\/li\u003e\n\u003cli\u003ePack size: 60 capsules\u003c\/li\u003e\n\u003cli\u003eStrength: 300 mcg per capsule, as Thoroughbred Labs states on the FACTS panel\u003c\/li\u003e\n\u003cli\u003eTotal per pack: 60 x 300 mcg, 18 mg 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\u003cp\u003eWith 300 mcg per capsule stated, the tub holds 18 mg of peptide as labelled, against 250 mcg per capsule stated for the \u003ca href=\"\/en-ro\/products\/yakka-strength-yakka-strength-tb500-peptide-capsules\"\u003eYakka Strength TB-500 capsules\u003c\/a\u003e we also stock. Our article on \u003ca href=\"\/en-ro\/blogs\/news\/price-per-mg-compare-sarms-peptides\"\u003eprice per milligram\u003c\/a\u003e explains how to set such figures side by side, and why a stated figure is only a label claim until a batch document measures it.\u003c\/p\u003e\n\u003ch2\u003eTB-500 in the UK: buying, legal status and what to check\u003c\/h2\u003e\n\u003cp\u003eSearches for \"buy TB 500 UK\" and \"TB 500 legal UK\" ask two things: may it be sold here, and how to tell a documented listing from an undocumented one.\u003c\/p\u003e\n\u003ch3\u003eThe legal position\u003c\/h3\u003e\n\u003cp\u003eTB-500 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 either. UK law turns on how a product is presented: anything offered to treat or prevent a condition is regulated as a medicine, and anything offered to be eaten must meet food law. TB-500 meets neither framework, so the only basis for this listing is supply for laboratory research to adults aged 18 and over, not for human consumption. No thymosin beta-4 medicine holds a UK marketing authorisation. Thymosin beta-4 and its derivatives, with TB-500 named as an example, are listed under section S2 (peptide hormones, growth factors and related substances) of the WADA Prohibited List and are prohibited at all times in sport. 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\u003col\u003e\n\u003cli\u003e\n\u003cstrong\u003eA named maker and a named seller\u003c\/strong\u003e, so there is someone accountable for the label and someone to contact about the order.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eA batch or lot number\u003c\/strong\u003e on the container. Analytical results belong to a batch, never to a product name.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eA certificate of analysis for that batch\u003c\/strong\u003e, issued by a named laboratory, with a matching lot number.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eA stated strength\u003c\/strong\u003e, or a plain statement that the manufacturer gives none.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eResearch-only wording\u003c\/strong\u003e: sale to adults only, with no usage directions and nothing promising a result.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eTracked delivery in plain packaging\u003c\/strong\u003e and a written returns policy.\u003c\/li\u003e\n\u003c\/ol\u003e\n\u003ch3\u003eWhere this Thoroughbred Labs pack stands\u003c\/h3\u003e\n\u003cp\u003eThe seller is named: FreeMuscle, registered in Andorra, with UK operations and dispatch in Scunthorpe. The manufacturer is named, sale is limited to adults and this page contains no directions for use. Every order ships 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. Two checks depend on Thoroughbred Labs rather than on us. The fourth point is met, with 300 mcg per capsule stated on the FACTS panel, and a batch certificate is shown only when the brand has supplied one for the lot we hold; as checked on 2 October 2026, the brand's own certificate page listed none for its TB500 capsules. The full set of checks is in 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\u003eTB-500 is offered as capsules and tablets, as freeze-dried powder in sealed vials, and occasionally as ready-mixed solution. The published work on thymosin beta-4 used routes that bypass digestion: intravenous infusion in the healthy-volunteer study, eye drops and topical gels in the corneal and skin programmes, and injection in most animal models. No study has measured whether any intact TB-500 peptide reaches the blood of a person after a capsule is swallowed.\u003c\/p\u003e\n\u003cp\u003eThe reason is digestive chemistry. The stomach's pepsin and the pancreatic and brush-border peptidases of the small intestine exist to break peptide bonds, and a short linear chain such as LKKTETQ, rich in lysine residues that trypsin cleaves next to, is an ordinary substrate. Crossing the gut wall would be a second, separate hurdle.\u003c\/p\u003e\n\u003cp\u003eAs materials, the formats differ in two practical ways. Stability: dry powder, whether in a capsule or a vial, keeps better than peptide dissolved in water, where hydrolysis and microbial growth begin. Uniformity: a capsule's content depends on how evenly a small amount of peptide was blended with filler before filling, while a solution's depends on how accurately it was made up and measured out. None of this implies that any format produces an effect. The wider question is covered in \u003ca href=\"\/en-ro\/blogs\/news\/do-oral-peptides-work\"\u003edo oral peptides actually work\u003c\/a\u003e and, for a related peptide, \u003ca href=\"\/en-ro\/blogs\/news\/bpc-157-capsules-vs-injection-what-studies-used\"\u003eBPC-157 capsules vs injection\u003c\/a\u003e.\u003c\/p\u003e\n\u003ch2\u003eTB-500 compared with BPC-157\u003c\/h2\u003e\n\u003cp\u003e\"TB 500 vs BPC 157\" is the most searched comparison for this compound, and Thoroughbred Labs makes both, but the molecules have nothing in common beyond being peptides sold for repair research.\u003c\/p\u003e\n\u003ctable\u003e\n\u003cthead\u003e\u003ctr\u003e\n\u003cth\u003ePoint\u003c\/th\u003e\n\u003cth\u003eTB-500 (thymosin beta-4 based)\u003c\/th\u003e\n\u003cth\u003eBPC-157\u003c\/th\u003e\n\u003c\/tr\u003e\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003eParent\u003c\/td\u003e\n\u003ctd\u003eThymosin beta-4, an intracellular actin-binding protein\u003c\/td\u003e\n\u003ctd\u003eA protein isolated from gastric juice\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eSize\u003c\/td\u003e\n\u003ctd\u003eFull protein 43 residues; products analysed in 2012 held a 7-residue acetylated fragment\u003c\/td\u003e\n\u003ctd\u003e15 residues, 1419.5 g\/mol\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eProposed mechanism\u003c\/td\u003e\n\u003ctd\u003eSequestering monomeric actin, which influences cell migration\u003c\/td\u003e\n\u003ctd\u003eGrowth factor, nitric oxide and cell-signalling pathways in rodent tissue\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eHuman data\u003c\/td\u003e\n\u003ctd\u003eSmall early trials of the full protein by infusion or local application; none on the fragment\u003c\/td\u003e\n\u003ctd\u003eNo randomised controlled trial published\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 section\u003c\/td\u003e\n\u003ctd\u003eS2, named among growth factor related substances\u003c\/td\u003e\n\u003ctd\u003eS0, non-approved substances\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003cp\u003eThymosin beta-4 has been studied by many independent groups and taken into industry-sponsored clinical programmes, although none reached approval. BPC-157 research comes largely from one university network and remains almost entirely preclinical. Neither body of work concerns capsules, and no study has compared the two peptides directly, so neither can be ranked above the other. Their different WADA sections carry the same practical result: both are banned at all times.\u003c\/p\u003e\n\u003cp\u003eThoroughbred Labs also sells \u003ca href=\"\/en-ro\/products\/thoroughbred-labs-bpc157-peptide-capsule-ndash-thoroughbred-labs\"\u003eBPC-157 capsules\u003c\/a\u003e and a \u003ca href=\"\/en-ro\/products\/thoroughbred-labs-research-system-bpc157-amp-tb500-capsule-ndash-thoroughbred-labs\"\u003eresearch system containing BPC-157 and TB-500\u003c\/a\u003e. That listing is a packaging convenience; we publish no guidance on combining the two and make no claim that they interact. Every BPC-157 brand we hold is on the \u003ca href=\"\/en-ro\/collections\/bpc-157\"\u003eBPC-157 collection page\u003c\/a\u003e, with background in \u003ca href=\"\/en-ro\/blogs\/news\/bpc-157-what-research-shows\"\u003eBPC-157: what the research shows\u003c\/a\u003e.\u003c\/p\u003e\n\u003ch2\u003eReading the certificate of analysis for this product\u003c\/h2\u003e\n\u003cp\u003eThoroughbred Labs 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 Thoroughbred Labs products we show a certificate of analysis only where the manufacturer 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. Where no batch certificate has been supplied, the listing does not show one.\u003c\/p\u003e\n\u003cp\u003eFor TB-500 the identity line is where a certificate earns its keep, because the name covers two very different molecules. Read each field against the pack:\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eIdentity method.\u003c\/strong\u003e HPLC shows a peak at the retention time of a reference standard. LC-MS adds a measured mass, and here the mass decides what is in the capsule: a result near 4.96 kDa points to full-length thymosin beta-4, while a result under 1 kDa fits the acetylated seven-residue fragment. A certificate naming \"TB-500\" with no mass leaves that question open.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePurity percentage.\u003c\/strong\u003e The share of the chromatogram taken by the main 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 field that checks the 300 mcg this label states. It should say whether finished capsules or raw powder were tested.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eLot reference and analysis date.\u003c\/strong\u003e The lot on the report should be the one printed on the tub; the date tells you whether the result is current.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eLaboratory name.\u003c\/strong\u003e So the result can be checked with whoever issued it.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eFor this brand a missing field has direct consequences: with no mass the molecule is unconfirmed, with no content line the stated 300 mcg stays unmeasured, and with no batch number the report cannot be linked to the capsules in hand. Questions about current stock can go through our \u003ca href=\"\/en-ro\/pages\/contact\"\u003econtact page\u003c\/a\u003e. 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\u003eDetection, sport and testing\u003c\/h2\u003e\n\u003cp\u003eThymosin beta-4 and its derivatives sit in section S2 of the WADA Prohibited List, with TB-500 named, and are prohibited in and out of competition. UK Anti-Doping applies the World Anti-Doping Code in the UK, and strict liability means an athlete is responsible for any prohibited substance in a sample regardless of what a label said. Equine anti-doping laboratories test for it too.\u003c\/p\u003e\n\u003cp\u003eMethods exist. The Ghent laboratory synthesised the acetylated fragment and proposed a strategy for detecting it in plasma and urine. The Hong Kong Jockey Club laboratory identified its metabolites in vitro, then confirmed the parent peptide at 0.02 ng\/mL in equine plasma and 0.01 ng\/mL in equine urine, and found it and its metabolites in samples from horses given the preparation. That work was in horses; no published study sets out how long TB-500 remains detectable in people. The accurate position is: detectable, window not established.\u003c\/p\u003e\n\u003ch2\u003eStorage, stability and handling\u003c\/h2\u003e\n\u003cp\u003eNo stability study of TB-500 capsules has been published, so the manufacturer's expiry or best-before date, if printed, is the limit to work to. Thymosin beta-4 contains a methionine residue, which can oxidise, so the practical threats to dry peptide powder are moisture, heat, air and light. Damp also softens capsule shells and makes contents clump.\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eClose the lid firmly and store the tub in a dark cupboard, well away from heat sources, steam and direct sun.\u003c\/li\u003e\n\u003cli\u003eLeave any desiccant sachet in the tub. If the pack is kept in a fridge, let it reach room temperature before opening so condensation does not form inside.\u003c\/li\u003e\n\u003cli\u003eDo not decant capsules into another pot: the printed lot number is what links them to any certificate. Only unopened packs qualify for the 30-day return.\u003c\/li\u003e\n\u003cli\u003eTreat the contents as laboratory reagents: gloves for opened capsules, away from food and drink, out of reach of children and animals, and disposal as chemical waste.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2\u003eGlossary\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eThymosin beta-4\u003c\/strong\u003e: a 43-amino-acid protein found inside most cells, the parent of the peptides sold as TB-500.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eActin sequestration\u003c\/strong\u003e: binding of unpolymerised actin so it is held in reserve rather than built into filaments.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eAngiogenesis\u003c\/strong\u003e: formation of new blood vessels, one of the processes studied in thymosin beta-4 models.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eN-terminal acetylation\u003c\/strong\u003e: an acetyl group added to the start of a peptide chain, written \"Ac-\" before the sequence.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePeptidase\u003c\/strong\u003e: an enzyme that cuts peptide bonds; the digestive tract contains many.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMetabolite\u003c\/strong\u003e: a breakdown product that testing laboratories can look for alongside the parent peptide.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ekDa\u003c\/strong\u003e: kilodalton, a unit of molecular mass equal to 1,000 g\/mol.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eNet peptide content\u003c\/strong\u003e: the share of a powder that is peptide, after water, salts and filler are excluded.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eS2\u003c\/strong\u003e: the part of WADA's list covering peptide hormones and growth factors, under which thymosin beta-4 derivatives are banned.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eStrict liability\u003c\/strong\u003e: the principle under which a positive sample counts against the athlete whatever its source or intent.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2\u003eAbout Thoroughbred Labs TB-500 Peptide Capsules\u003c\/h2\u003e\n\u003cp\u003eBehind the Thoroughbred Labs label is a UK web shop, thoroughbredlabs.co.uk, selling in pounds with no customer-facing premises. The statutory details in its footer point to 24\/7 Billing Limited (number 14990140 on the Companies House register), an active private limited company, London-registered, incorporated in July 2023. The brand's catalogue offers TB500 both as a 10 mg freeze-dried vial and as these capsules, besides blends and Research Systems. Its certificate page carries a report for the vial, batch TBLTB945, and none for the capsules as of 2 October 2026; the vial document describes a different product and is not evidence for what a capsule contains.\u003c\/p\u003e\n\u003cp\u003eOn the tub, TB500 is printed in large type over 60 CAPSULES and the brand's research-only band, with the strength on the side FACTS panel: TB500 300mcg per capsule; the other ingredients listed are organic rice flour and magnesium stearate in a vegetarian capsule. The brand's own product title repeats 300 mcg. The same tub appears in the brand's BPC-157 and TB500 Research System, which we also stock. Because no capsule report has been published, this listing carries no certificate and makes no claim about the identity, purity or content of the batch held; what it records is the brand's stated figure.\u003c\/p\u003e\n\u003cp\u003eTwo other TB-500 capsule listings sit beside this one in the \u003ca href=\"\/en-ro\/collections\/tb-500\"\u003eTB-500 collection\u003c\/a\u003e: \u003ca href=\"\/en-ro\/products\/yakka-strength-yakka-strength-tb500-peptide-capsules\"\u003eYakka Strength\u003c\/a\u003e, which states 250 mcg per capsule, and Free Muscle's own capsules, which carry a Janoshik certificate for every batch. The \u003ca href=\"\/en-ro\/collections\/brand-thoroughbred-labs\"\u003eThoroughbred Labs collection\u003c\/a\u003e describes the brand's labelling conventions and lists which of its capsules have published reports. To check a tub, confirm the shrink seal, read the panel figure against this page, note the batch number and ask us what documentation exists for it.\u003c\/p\u003e\n\u003cp\u003eTB-500 names synthetic peptides derived from thymosin beta-4; the clinical work was on the full protein by injection, no product containing either is licensed, UK law places it outside both medicines and food, and the WADA list places thymosin beta-4 and its derivatives in S2, prohibited at all times. Research use only, adults aged 18 and over.\u003c\/p\u003e\n\u003ch2\u003eRelated\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003ca href=\"\/en-ro\/collections\/tb-500\"\u003eAll brands of TB-500 we stock, compared\u003c\/a\u003e, including \u003ca href=\"\/en-ro\/products\/yakka-strength-yakka-strength-tb500-peptide-capsules\"\u003eYakka Strength TB-500 capsules\u003c\/a\u003e\n\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\u003ca href=\"\/en-ro\/collections\/peptides\"\u003eResearch peptides\u003c\/a\u003e\u003c\/li\u003e\n\u003cli\u003e\u003ca href=\"\/en-ro\/blogs\/news\/tb-500-thymosin-beta-4-research-guide\"\u003eTB-500 and thymosin beta-4 research guide\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\u003eGoldstein AL, et al. Thymosin beta4: a multi-functional regenerative peptide. Basic properties and clinical applications. Expert Opin Biol Ther. 2012;12(1):37-51. \u003ca href=\"https:\/\/pubmed.ncbi.nlm.nih.gov\/22074294\/\" rel=\"noopener\"\u003ePMID: 22074294\u003c\/a\u003e.\u003c\/li\u003e\n\u003cli\u003eRuff D, et al. A randomized, placebo-controlled, single and multiple dose study of intravenous thymosin beta4 in healthy volunteers. Ann N Y Acad Sci. 2010;1194:223-9. \u003ca href=\"https:\/\/pubmed.ncbi.nlm.nih.gov\/20536472\/\" rel=\"noopener\"\u003ePMID: 20536472\u003c\/a\u003e.\u003c\/li\u003e\n\u003cli\u003eEsposito S, et al. Synthesis and characterization of the N-terminal acetylated 17-23 fragment of thymosin beta 4 identified in TB-500, a product suspected to possess doping potential. Drug Test Anal. 2012;4(9):733-8. \u003ca href=\"https:\/\/pubmed.ncbi.nlm.nih.gov\/22962027\/\" rel=\"noopener\"\u003ePMID: 22962027\u003c\/a\u003e.\u003c\/li\u003e\n\u003cli\u003eHo EN, et al. Doping control analysis of TB-500, a synthetic version of an active region of thymosin β4, in equine urine and plasma by liquid chromatography-mass spectrometry. J Chromatogr A. 2012;1265:57-69. \u003ca href=\"https:\/\/pubmed.ncbi.nlm.nih.gov\/23084823\/\" rel=\"noopener\"\u003ePMID: 23084823\u003c\/a\u003e.\u003c\/li\u003e\n\u003c\/ol\u003e\n","brand":"Thoroughbred Labs","offers":[{"title":"Default Title","offer_id":48468981219554,"sku":null,"price":38.99,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0772\/3499\/5426\/files\/3D_tb500_use_6f62844a-8e1d-428a-a4b9-fbfe1fcbf3ac.png?v=1789931435"},{"product_id":"yakka-strength-yakka-strength-bpc157-peptide-capsules","title":"Yakka Strength BPC-157 Peptide Capsules","description":"\u003cp\u003eYakka Strength BPC-157 Peptide Capsules is a 60-capsule pot of the synthetic pentadecapeptide BPC-157, which Yakka Strength Ltd distributes and Free Muscle stocks through the \u003ca href=\"\/en-ro\/pages\/muscle-market\"\u003eMuscle Market\u003c\/a\u003e range. The label facts panel states 250 mcg of BPC157 per capsule, 15 mg per pot as labelled; the salt form is not stated. The product is supplied to adults aged 18 and over for laboratory research only. Below: the evidence, the UK and sport rules, and how to judge a certificate for this pack.\u003c\/p\u003e\n\u003ch2\u003eAbout BPC-157\u003c\/h2\u003e\n\u003cp\u003eBPC-157 (Body Protection Compound 157, also written BPC157 or PL 14736) is a synthetic 15-amino-acid peptide whose sequence, GEPPPGKPADDAGLV, is derived from a protein found in human gastric juice. It was developed by a research group at the University of Zagreb and has been studied since the early 1990s, almost entirely in rodents. Being a peptide, it belongs to neither the SARM nor the steroid class, although shops often list it beside both.\u003c\/p\u003e\n\u003ctable\u003e\n\u003cthead\u003e\u003ctr\u003e\n\u003cth\u003eIdentifier\u003c\/th\u003e\n\u003cth\u003eBPC-157\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\u003e137525-51-0\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\u003eSequence (one-letter code)\u003c\/td\u003e\n\u003ctd\u003eGEPPPGKPADDAGLV\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eInChIKey\u003c\/td\u003e\n\u003ctd\u003eHEEWEZGQMLZMFE-RKGINYAYSA-N\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\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003ch3\u003eWhat the published research reports\u003c\/h3\u003e\n\u003cp\u003eA 2011 study of rat Achilles tendon reported that BPC-157 increased outgrowth of tendon explants and the migration and survival of tendon fibroblasts in culture, and linked this to activation of the FAK-paxillin signalling pathway. That work came from Chang Gung University in Taiwan, one of the few laboratories outside Zagreb to publish on the peptide. A 2016 review by the originating group summarised its own rodent findings on the gut, brain and vascular system. Reviewers have noted as a limitation that most of the evidence comes from that one research network.\u003c\/p\u003e\n\u003cp\u003eThe first formal pharmacokinetic study appeared only in 2022, from a group in Xi'an, China, preparing BPC-157 for clinical development. In rats and beagle dogs given the peptide intravenously or by intramuscular injection, the intact peptide had an elimination half-life of under 30 minutes, and absolute bioavailability after intramuscular injection was roughly 14 to 19 per cent in rats and 45 to 51 per cent in dogs. Radiolabelled peptide was broken quickly into small fragments and then single amino acids, excreted mainly in urine and bile. The oral route was not tested.\u003c\/p\u003e\n\u003cp\u003eThere are no published, peer-reviewed randomised controlled trials of BPC-157 in humans, and no pharmacokinetic data on oral capsules in people. The animal findings above are not claims about this product. More 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\u003ch2\u003eThis listing\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003eCompound: BPC-157\u003c\/li\u003e\n\u003cli\u003eBrand: Yakka Strength\u003c\/li\u003e\n\u003cli\u003eForm: capsules\u003c\/li\u003e\n\u003cli\u003ePack size: 60 capsules\u003c\/li\u003e\n\u003cli\u003eStrength per capsule: 250 mcg BPC157, taken from the side facts panel (salt form not stated)\u003c\/li\u003e\n\u003cli\u003eTotal per pot: 15 mg, as labelled (250 mcg x 60)\u003c\/li\u003e\n\u003cli\u003eLabel: \"Distributed by Yakka Strength Ltd\", \"Made in the UK\"; no manufacturer named\u003c\/li\u003e\n\u003cli\u003eCertificate of analysis: depends on the batch; displayed only if the brand has provided one for our current stock\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\u003eWith 15 mg per pot as labelled, this pot can be compared on cost per milligram with other BPC-157 brands that print a figure, bearing in mind that the label does not say whether 250 mcg refers to a salt or to the net peptide. A batch certificate, if available, may give a measured content. 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\u003ch2\u003eBPC-157 in the UK: buying, legal status and what to check\u003c\/h2\u003e\n\u003cp\u003eThree kinds of UK search lead here: whether BPC-157 can be bought (\"BPC 157 UK buy\"), whether that is lawful (\"BPC 157 UK legal\", \"BPC 157 UK NHS\"), and how to tell a careful seller from a careless one.\u003c\/p\u003e\n\u003ch3\u003eThe legal position\u003c\/h3\u003e\n\u003cp\u003eBPC-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, and it may be supplied only as a research material. Free Muscle supplies it on that basis, to adults aged 18 or over, for laboratory research only. With no licensed product containing it anywhere, the NHS does not prescribe it. In sport it is banned at all times (see detection, below). Buyers are responsible for the rules that apply to them, including any anti-doping code. The same applies across our \u003ca href=\"\/en-ro\/collections\/peptides\"\u003eresearch peptides\u003c\/a\u003e range.\u003c\/p\u003e\n\u003ch3\u003eWhat a careful UK listing shows\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eA named manufacturer and a traceable seller\u003c\/strong\u003e, meaning a registered company you can contact.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eA printed lot number\u003c\/strong\u003e, without which no test result can be tied to the capsules.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eA certificate for that lot\u003c\/strong\u003e, not one sample report reused for years.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eA stated peptide content per capsule\u003c\/strong\u003e, so packs can be compared.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eResearch-only terms\u003c\/strong\u003e: an 18+ restriction, no directions for use and no promised outcomes.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eTracked delivery in plain packaging\u003c\/strong\u003e, with a written returns policy.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eWhere this listing stands\u003c\/h3\u003e\n\u003cp\u003eThe seller is named (FreeMuscle, registered in Andorra, with UK operations and dispatch in Scunthorpe), the distributor is named on the pot, sales are restricted to adults and the page gives no directions for use. Every order goes by free tracked UK delivery in plain packaging; orders placed before 2pm Monday to Friday are processed the same working day, and unopened items can be returned within 30 days. The label settles the strength point with its 250 mcg per capsule. One point rests with the brand: a Yakka Strength certificate is shown only where one has been supplied for the batch we hold, and the brand's own site shows none. \"BPC 157 UK reviews\" and Reddit threads cannot fill either gap, since a review records one buyer's impression, not what a lot contained. More checks are in 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\u003eBPC-157 is sold as capsules, tablets, freeze-dried powder in vials and ready-mixed liquids, and \"BPC 157 capsules vs injection\" is among the most searched comparisons. The molecule is the same in each; what differs is how studies delivered it and how each format behaves as a material.\u003c\/p\u003e\n\u003cp\u003eMost rodent experiments injected BPC-157 into the abdominal cavity, and some from the Zagreb group dissolved it in the animals' drinking water. The 2022 pharmacokinetic study measured only intravenous and intramuscular injection, so no published figure exists for how much intact peptide, if any, reaches the blood after a capsule is swallowed. The general obstacle is digestion: pepsin and the intestinal proteases exist to cut peptide bonds, and a 15-residue chain is a typical substrate. The originating group describes BPC-157 as stable in human gastric juice, a finding from its own laboratory that no published human study has tested.\u003c\/p\u003e\n\u003cp\u003eAs materials, the formats differ mainly in handling. A lyophilised vial is dry and comparatively stable until reconstituted; in solution, hydrolysis and microbial growth become concerns, and each measured volume is only as accurate as the mixing and drawing. Ready-mixed liquids carry those issues from the start. A capsule holds a fixed fill of dry powder blended with a filler, so its consistency depends on how evenly the batch was mixed, which only a per-capsule content test can confirm. Searches such as \"BPC 157 capsules 1000mcg\" reflect labels that state strength in micrograms; none is stated for this pack. None of this suggests that any format produces an effect. Both routes are examined 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 work\u003c\/a\u003e.\u003c\/p\u003e\n\u003ch2\u003eBPC-157 compared with TB-500\u003c\/h2\u003e\n\u003cp\u003eTB-500 is the peptide most often searched alongside this one (\"TB 500 vs BPC 157\", \"BPC 157 and TB 500\"). The two are often sold side by side, but they are unrelated molecules with different origins, evidence and regulatory treatment.\u003c\/p\u003e\n\u003ctable\u003e\n\u003cthead\u003e\u003ctr\u003e\n\u003cth\u003ePoint\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\u003eOrigin\u003c\/td\u003e\n\u003ctd\u003e15-residue sequence from a protein in gastric juice\u003c\/td\u003e\n\u003ctd\u003eSynthetic peptide derived from thymosin beta-4, a 43-residue actin-binding protein\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eIdentity\u003c\/td\u003e\n\u003ctd\u003eGEPPPGKPADDAGLV, 1419.5 g\/mol\u003c\/td\u003e\n\u003ctd\u003eCharacterised by anti-doping chemists as the acetylated fragment Ac-LKKTETQ; full thymosin beta-4 is about 4,963 g\/mol\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMain research setting\u003c\/td\u003e\n\u003ctd\u003eRodent gut, tendon, ligament and vascular models, mostly from one Zagreb group\u003c\/td\u003e\n\u003ctd\u003eAnimal wound, cornea and heart models, mostly using the full protein\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eHuman data\u003c\/td\u003e\n\u003ctd\u003eNo randomised controlled trial\u003c\/td\u003e\n\u003ctd\u003eSmall early trials of full-length thymosin beta-4 applied to the eye or skin; none of the fragment\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\u003eS0, non-approved substances; banned at all times\u003c\/td\u003e\n\u003ctd\u003eS2, where thymosin beta-4 and its derivatives are named among growth factor modulators; banned at all times\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003cp\u003eThe proposed mechanisms differ too. The Zagreb group's 2016 review lists the FAK-paxillin, Egr-1 and JAK-2 pathways as implicated in BPC-157's animal effects, whereas thymosin beta-4's best-established role is holding a reserve of unpolymerised actin, which governs how cells move. Neither has been confirmed in controlled human studies. No human trial has compared the two, so neither can be ranked above the other, and we publish no guidance on using them together.\u003c\/p\u003e\n\u003cp\u003eBrands held are in the \u003ca href=\"\/en-ro\/collections\/tb-500\"\u003eTB-500 collection\u003c\/a\u003e, including \u003ca href=\"\/en-ro\/products\/yakka-strength-yakka-strength-tb500-peptide-capsules\"\u003eYakka Strength TB-500 capsules\u003c\/a\u003e, and the evidence is summarised in the \u003ca href=\"\/en-ro\/blogs\/news\/tb-500-thymosin-beta-4-research-guide\"\u003eTB-500 and thymosin beta-4 research guide\u003c\/a\u003e.\u003c\/p\u003e\n\u003ch2\u003eReading the certificate of analysis for this product\u003c\/h2\u003e\n\u003cp\u003eThe label names Yakka Strength only as distributor, with no manufacturer or laboratory, so any certificate of analysis would reach us through the brand. A COA is shown here only once Yakka Strength has supplied one for the stock on hand, and if there is none, we say so rather than substitute a generic PDF. Free Muscle-brand batches, including our own \u003ca href=\"\/en-ro\/collections\/bpc-150\"\u003eBPC-150 capsules\u003c\/a\u003e, are independently assayed at Janoshik Analytical; that does not extend to Yakka Strength. On a peptide capsule certificate, these are the lines to read:\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eIdentity (HPLC or LC-MS).\u003c\/strong\u003e HPLC matches a peak to a BPC-157 reference standard, which is suggestive rather than conclusive. LC-MS weighs the molecule: C62H98N16O22 has a monoisotopic mass of about 1418.7, usually seen as a doubly charged ion near m\/z 710.4 or a singly charged one near m\/z 1419.7.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePurity (%).\u003c\/strong\u003e The BPC-157 peak's share of the chromatogram. It grades how clean the peptide is, not how much each capsule holds; incomplete sequences left from synthesis are the usual impurities.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eContent per capsule.\u003c\/strong\u003e The measured peptide per capsule, to be read against the 250 mcg the label declares. Peptide powders also carry water and counter-ions such as acetate, so a good certificate says whether it reports net peptide or total powder.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eBatch number.\u003c\/strong\u003e Must match the lot printed on the pack in hand.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eLaboratory and test date.\u003c\/strong\u003e Identify who ran the analysis, so the result can be checked with them, and how old it is.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eHere a missing field has a direct consequence. Without a content line, the certificate cannot supply the missing strength; without an identity method, a purity figure could describe any peptide; without a matching batch number, the report belongs to other material. \u003ca href=\"\/en-ro\/pages\/contact\"\u003eContact us\u003c\/a\u003e with the lot number and we will say 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\"\u003ereading a COA\u003c\/a\u003e.\u003c\/p\u003e\n\u003ch2\u003eDetection, sport and testing\u003c\/h2\u003e\n\u003cp\u003eBPC-157 is named as an example in section S0 (non-approved substances) of the WADA Prohibited List. S0 covers any pharmacological substance with no current approval for human therapeutic use by a government health authority, and applies at all times, in and out of competition, in every sport bound by the World Anti-Doping Code, UK Anti-Doping testing included. Strict liability applies: an athlete is responsible for any prohibited substance found in their sample, whatever its source or label.\u003c\/p\u003e\n\u003cp\u003eLaboratories have had a validated method since 2017, when the Salt Lake City anti-doping laboratory identified BPC-157 in confiscated vials. Its urine assay reached a limit of detection of 0.1 ng\/mL, the peptide stayed stable in urine for at least four days, and measuring a stable metabolite alongside it made the test more specific. No study has published how long after exposure BPC-157 remains detectable in human urine, so the accurate statement is: detectable, window not established. An unpublished window offers a tested athlete no protection, because the method exists and the ban never lapses.\u003c\/p\u003e\n\u003ch2\u003eStorage, stability and handling\u003c\/h2\u003e\n\u003cp\u003eNo stability study of BPC-157 capsules has been published, so the printed expiry or best-before date, where there is one, is the limit to work to. General peptide chemistry still ranks the risks. Moisture comes first: it lets peptide bonds hydrolyse, clumps the powder and softens capsule shells, while very dry heat makes them brittle. Warmth speeds every degradation reaction, and light adds to it. Stability in gastric juice, as the originating group reports it, concerns hours in acid, not months on a shelf.\u003c\/p\u003e\n\u003cp\u003eIn practice, keep the tub sealed in a cool, dry place out of direct light, away from radiators, windowsills and steamy rooms. If it is kept in a fridge, let it reach room temperature before opening so condensation does not settle on the capsules, and leave any desiccant sachet in place. Note the date of first opening beside the batch number. Treat the pack as a laboratory reagent: gloves for opened capsules or loose powder, nowhere near food or drink, out of reach of children and animals, and waste disposed of as chemical waste rather than in household bins or drains. Keep capsules in the container that carries the lot number, or they can no longer be matched to a certificate.\u003c\/p\u003e\n\u003ch2\u003eGlossary\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003ePentadecapeptide\u003c\/strong\u003e: a peptide made of 15 amino acids; BPC-157 is one.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePeptide bond\u003c\/strong\u003e: the link between neighbouring amino acids, which both digestive enzymes and moisture can break.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eBioavailability\u003c\/strong\u003e: the share of an administered amount that reaches the bloodstream unchanged.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eLyophilised\u003c\/strong\u003e: freeze-dried, the usual state of peptide powder supplied in vials.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eHPLC\u003c\/strong\u003e: high-performance liquid chromatography, the separation technique behind most purity percentages; components leave the column at different times.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eLC-MS\u003c\/strong\u003e: chromatography linked to a mass spectrometer, so every separated component is also weighed, which makes an identity result firmer.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eNet peptide content\u003c\/strong\u003e: the proportion of a peptide powder that is peptide once water and counter-ions are excluded.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eLimit of detection\u003c\/strong\u003e: the smallest amount an assay can distinguish from a blank sample.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eThymosin beta-4\u003c\/strong\u003e: an actin-binding protein 43 amino acids long; TB-500 is sold as a synthetic peptide derived from it.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2\u003eAbout Yakka Strength BPC-157 Peptide Capsules\u003c\/h2\u003e\n\u003cp\u003eThe two peptide pots in the Yakka Strength range share a purple colourway on the brand's black label, and this is the BPC157 one: front text \"BPC157\", \"60 capsules\", \"for research purposes only\"; side facts panel \"BPC157 250 mcg\" per capsule, 60 capsules per container and \"Made in the UK\"; back panel \"Distributed by Yakka Strength Ltd\" with the brand's research-only wording. Sixty capsules at 250 mcg is 15 mg of BPC157 per pot as labelled, and Yakka Strength's listing describes the contents only as a synthetic peptide: no salt (acetate, arginate or hydrochloride) is named, and it is not said whether 250 mcg is net peptide or total powder.\u003c\/p\u003e\n\u003cp\u003eYakka Strength Ltd is a County Durham company (Companies House 13284431, incorporated 2021) whose main lines are gym equipment and sports nutrition; its capsule research range numbers eleven products, all listed on the \u003ca href=\"\/en-ro\/collections\/brand-yakka-strength\"\u003eYakka Strength brand page\u003c\/a\u003e. This pot is one of the five single-compound pots and is also the BPC157 component of three bundles: the \u003ca href=\"\/en-ro\/products\/yakka-strength-yakka-strength-wolverine-stack-bpc157-tb500-capsule-peptide-bundle\"\u003eWolverine Stack\u003c\/a\u003e (with the TB500 pot), the \u003ca href=\"\/en-ro\/products\/yakka-strength-yakka-strength-mk677-bpc157-capsule-bundle\"\u003eMK677 and BPC157 bundle\u003c\/a\u003e and the \u003ca href=\"\/en-ro\/products\/yakka-strength-yakka-strength-mk677-bpc157-tb500-capsule-bundle\"\u003ethree-pot bundle\u003c\/a\u003e. The brand's site publishes no certificates and names no manufacturer; quote the lot number from the pot itself (the label design has none) when asking us what has been supplied for the batch.\u003c\/p\u003e\n\u003cp\u003eBPC-157 is a fifteen-residue synthetic peptide whose sequence comes from a gastric protein. Almost all published work on it is in rodents and cells; no medicines licence exists for it anywhere, it has no place in a lawful UK food supplement, and WADA places it in section S0 (substances with no current approval), prohibited at all times. On stated label figures, \u003ca href=\"\/en-ro\/collections\/brand-biolab\"\u003eBioLab\u003c\/a\u003e sells BPC-157 as the hydrochloride at 200 mcg in 60 capsules (12 mg per tub) and \u003ca href=\"\/en-ro\/collections\/brand-thoroughbred-labs\"\u003eThoroughbred Labs\u003c\/a\u003e at 300 mcg of the arginate in 60 (18 mg); Yakka Strength's 250 mcg sits between them, with no salt named. Free Muscle has no BPC-157 of its own. The \u003ca href=\"\/en-ro\/collections\/bpc-157\"\u003eBPC-157 collection\u003c\/a\u003e lists all three brands without ranking them.\u003c\/p\u003e\n\u003ch2\u003eRelated\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003ca href=\"\/en-ro\/collections\/bpc-157\"\u003eBPC-157 collection\u003c\/a\u003e: every brand we hold, set side by side on strength, pack size and testing\u003c\/li\u003e\n\u003cli\u003e\n\u003ca href=\"\/en-ro\/collections\/brand-yakka-strength\"\u003eAll Yakka Strength products\u003c\/a\u003e stocked at Free Muscle\u003c\/li\u003e\n\u003cli\u003e\n\u003ca href=\"\/en-ro\/blogs\/news\/sarms-vs-peptides-choosing-by-goal\"\u003eSARMs vs peptides\u003c\/a\u003e, on how the two classes differ\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\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\u003eHe L, et al. Pharmacokinetics, distribution, metabolism, and excretion of body-protective compound 157, a potential drug for treating various wounds, in rats and dogs. Front Pharmacol. 2022;13:1026182. \u003ca href=\"https:\/\/pubmed.ncbi.nlm.nih.gov\/36588717\/\" rel=\"noopener\"\u003ePMID: 36588717\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":"Yakka Strength","offers":[{"title":"Default Title","offer_id":48468982235362,"sku":null,"price":42.99,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0772\/3499\/5426\/files\/yakka-strength-bpc157-peptide-capsules-pack-shot-white.jpg?v=1791052906"},{"product_id":"yakka-strength-yakka-strength-tb500-peptide-capsules","title":"Yakka Strength TB-500 Peptide Capsules","description":"\u003cp\u003e\u003cstrong\u003eYakka Strength TB-500 Peptide Capsules\u003c\/strong\u003e is a Yakka Strength listing of TB-500, supplied as 60 capsules per pot and stocked through the \u003ca href=\"\/en-ro\/pages\/muscle-market\"\u003eMuscle Market\u003c\/a\u003e range; its facts panel gives 250 mcg of TB500 per capsule, 15 mg per pot as labelled, naming Yakka Strength Ltd as distributor but not which TB-500 molecule is inside. It is sold for laboratory research only, is not for human consumption, and is sold to adults aged 18 and over. This page covers what the published research on TB-500 and thymosin beta-4 reports, what the label documents, the UK and anti-doping position, and how batch certificates are handled for Yakka Strength products.\u003c\/p\u003e\n\u003ch2\u003eAbout TB-500\u003c\/h2\u003e\n\u003cp\u003eTB-500 is the name used in the research-compound market for synthetic peptides based on thymosin beta-4, a 43-amino-acid protein present in most human cells. Products sold as TB-500 may contain the full sequence or a shorter fragment around the actin-binding region; the label on this listing does not say which. Thymosin beta-4 binds monomeric actin and has been studied in cell migration, angiogenesis and wound repair models. It is a peptide, so it is neither a steroid nor a SARM, even though the three are often sold side by side.\u003c\/p\u003e\n\u003ctable\u003e\n\u003cthead\u003e\u003ctr\u003e\n\u003cth\u003eIdentifier\u003c\/th\u003e\n\u003cth\u003eFull thymosin beta-4\u003c\/th\u003e\n\u003cth\u003eFragment found in TB-500 products\u003c\/th\u003e\n\u003c\/tr\u003e\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003eLength\u003c\/td\u003e\n\u003ctd\u003e43 amino acids\u003c\/td\u003e\n\u003ctd\u003e7 amino acids (positions 17 to 23), acetylated at the N-terminus\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eSequence\u003c\/td\u003e\n\u003ctd\u003eFull protein sequence\u003c\/td\u003e\n\u003ctd\u003eAc-LKKTETQ\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMolecular formula\u003c\/td\u003e\n\u003ctd\u003eC212H350N56O78S\u003c\/td\u003e\n\u003ctd\u003eC38H68N10O14\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMolecular weight\u003c\/td\u003e\n\u003ctd\u003eabout 4,963 g\/mol\u003c\/td\u003e\n\u003ctd\u003eabout 889 g\/mol\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003ePubChem CID\u003c\/td\u003e\n\u003ctd\u003e45382195\u003c\/td\u003e\n\u003ctd\u003enot listed here\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eInChIKey\u003c\/td\u003e\n\u003ctd\u003eUGPMCIBIHRSCBV-UHFFFAOYSA-N\u003c\/td\u003e\n\u003ctd\u003enot listed here\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003ch3\u003eWhat the published research reports\u003c\/h3\u003e\n\u003cp\u003eA 2012 review by Goldstein and colleagues summarised the peptide's properties and the clinical programmes then under way in wounds, the cornea and cardiac repair. A 2010 randomised, placebo-controlled study gave intravenous pharmaceutical-grade thymosin beta-4 to healthy volunteers as single and repeated doses. Adverse events were infrequent and mild or moderate, and none was serious. It was a safety study, not an efficacy study, and it used injection rather than a capsule. None of those programmes has produced an approved medicine, and no published human work shows that a peptide of this size survives oral administration.\u003c\/p\u003e\n\u003cp\u003eThe chemistry of what is actually sold as TB-500 comes mostly from anti-doping laboratories. In 2012 the Ghent doping control laboratory analysed a TB-500 product by high-resolution mass spectrometry and identified the acetylated 17-23 fragment of thymosin beta-4, Ac-LKKTETQ, rather than the whole protein. The same year the Hong Kong Jockey Club's racing laboratory described TB-500 as a veterinary preparation built around that acetylated fragment and published a method that found it, and its breakdown products, in urine and plasma from horses given a single administration. Neither study measured any effect in people. Nothing above is a claim about this product.\u003c\/p\u003e\n\u003ch2\u003eThis listing\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003eBrand and distributor: Yakka Strength Ltd, as the back panel states, with \"Made in the UK\" on the facts panel and no manufacturer named\u003c\/li\u003e\n\u003cli\u003eCompound: TB-500 (Thymosin Beta-4)\u003c\/li\u003e\n\u003cli\u003eForm: Capsules\u003c\/li\u003e\n\u003cli\u003ePack size: 60 capsules\u003c\/li\u003e\n\u003cli\u003eStrength: 250 mcg TB500 per capsule, the figure printed on the side facts panel\u003c\/li\u003e\n\u003cli\u003eTotal per pot: 15 mg, as labelled (250 mcg x 60)\u003c\/li\u003e\n\u003cli\u003eWhich peptide: the label does not say whether the capsules hold full thymosin beta-4 or the Ac-LKKTETQ fragment\u003c\/li\u003e\n\u003cli\u003eBatch certificate of analysis: shown where Yakka Strength supplies one for the batch we hold\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eWith 15 mg per pot as labelled, the pot can be set against other TB-500 brands that print a figure, although the comparison is only as good as the identity behind it: 250 mcg of a seven-residue fragment and 250 mcg of full thymosin beta-4 are not the same quantity of the same thing. Our \u003ca href=\"\/en-ro\/blogs\/news\/price-per-mg-compare-sarms-peptides\"\u003eprice per milligram guide\u003c\/a\u003e explains the method.\u003c\/p\u003e\n\u003ch2\u003eTB-500 in the UK: buying, legal status and what to check\u003c\/h2\u003e\n\u003cp\u003eUK searches for this peptide cluster around three questions: whether it is legal (\"TB 500 legal UK\"), where it can be bought (\"buy TB 500 UK\", \"TB 500 UK for sale\", \"TB 500 capsules UK\"), and how to judge the seller.\u003c\/p\u003e\n\u003ch3\u003eThe legal position\u003c\/h3\u003e\n\u003cp\u003eTB-500 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 either, which is why it can be supplied at all, but only as a laboratory research material to adults aged 18 and over and never for human consumption. Thymosin beta-4 and its derivatives, with TB-500 named as an example, are listed under section S2 (peptide hormones, growth factors and related substances) of the WADA Prohibited List and are prohibited at all times in sport. 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 research compounds, and the \u003ca href=\"\/en-ro\/blogs\/news\/tb-500-thymosin-beta-4-research-guide\"\u003eTB-500 and thymosin beta-4 research guide\u003c\/a\u003e covers this peptide in depth.\u003c\/p\u003e\n\u003ch3\u003eWhat a trustworthy UK listing shows\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eThe peptide identified\u003c\/strong\u003e: whether the product is full thymosin beta-4 or the acetylated fragment, since the two differ roughly fivefold in molecular weight.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eA stated amount per capsule or vial\u003c\/strong\u003e, so a buyer can see what the pack is supposed to contain.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eTraceability\u003c\/strong\u003e: a lot code printed on every tub, matched by the lot code on its certificate.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eA named maker and a named business behind the sale\u003c\/strong\u003e, reachable by email.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eResearch-only terms\u003c\/strong\u003e: an 18+ restriction, no instructions for use and no promised results.\u003c\/li\u003e\n\u003cli\u003e\u003cstrong\u003ePlain packaging, tracked delivery and a written returns policy.\u003c\/strong\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eHow this listing measures up\u003c\/h3\u003e\n\u003cp\u003eFree Muscle is the trading name of FreeMuscle, a business registered in Andorra, with UK operations and dispatch in Scunthorpe. Orders ship by free tracked UK delivery in plain packaging, orders placed before 2pm Monday to Friday are processed the same working day, EU delivery takes three to seven working days, and unopened items can be returned within 30 days. The strength point is met: the label states 250 mcg per capsule. The point not met on the label is the identity of the peptide, which the brand does not specify, and a batch certificate with an identity result is the only document that could settle it; we show one only where Yakka Strength supplies it for the batch we hold, and the brand's own pages show none. More in 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\u003eMost TB-500 on the market is freeze-dried powder in glass vials, often labelled \"10mg\", which is why \"TB 500 10mg UK\" is a common search. Capsules and tablets, as in this listing, are a newer format. The literature shows how each route was studied and where the obstacles lie.\u003c\/p\u003e\n\u003cp\u003eThe human programmes summarised in the 2012 review used intravenous infusion or preparations applied directly to skin or eye. The anti-doping work on the Ac-LKKTETQ fragment used horses given the veterinary preparation, not an oral form. No published study has measured whether either peptide reaches the blood intact after being swallowed. The general obstacle is digestion: stomach and intestinal proteases cleave peptide chains, and a 43-residue protein offers them many sites. Even the 7-residue fragment is a target, and the Hong Kong group's method looked for its metabolites as well as the parent peptide. Our article on \u003ca href=\"\/en-ro\/blogs\/news\/do-oral-peptides-work\"\u003ewhether oral peptides work\u003c\/a\u003e covers the digestion problem across the class.\u003c\/p\u003e\n\u003cp\u003eAs materials the formats differ in handling rather than in molecule. A sealed vial of freeze-dried powder is dry and relatively stable, but once dissolved it becomes vulnerable to hydrolysis and contamination, and any measured volume depends on the mixing. A capsule holds a fixed fill of dry powder, usually with a filler, and its consistency from capsule to capsule depends on how evenly the batch was blended, which only a per-capsule content test can show. None of this implies that any format produces an effect.\u003c\/p\u003e\n\u003ch2\u003eTB-500 compared with BPC-157\u003c\/h2\u003e\n\u003cp\u003eBPC-157 is the peptide most often searched with this one (\"TB 500 vs BPC 157\", \"TB 500 and BPC 157\"). They are sold side by side and sometimes in the same bundle, but they come from unrelated proteins and sit in different parts of the WADA list.\u003c\/p\u003e\n\u003ctable\u003e\n\u003cthead\u003e\u003ctr\u003e\n\u003cth\u003eQuestion\u003c\/th\u003e\n\u003cth\u003eTB-500\u003c\/th\u003e\n\u003cth\u003eBPC-157\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\u003eThymosin beta-4, an intracellular actin-sequestering protein\u003c\/td\u003e\n\u003ctd\u003eA protein isolated from gastric juice\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eWhat is sold\u003c\/td\u003e\n\u003ctd\u003eFull 43-residue protein or the 7-residue Ac-LKKTETQ fragment; labels rarely say which\u003c\/td\u003e\n\u003ctd\u003eA single defined 15-residue sequence, GEPPPGKPADDAGLV\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eSize\u003c\/td\u003e\n\u003ctd\u003eAbout 4,963 g\/mol (full) or about 889 g\/mol (fragment)\u003c\/td\u003e\n\u003ctd\u003eAbout 1,419 g\/mol\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eHuman research\u003c\/td\u003e\n\u003ctd\u003eFull protein: a volunteer infusion study and early wound and eye programmes. Fragment: none\u003c\/td\u003e\n\u003ctd\u003eNo published randomised controlled trial\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eUK status\u003c\/td\u003e\n\u003ctd\u003eUnlicensed; research material only\u003c\/td\u003e\n\u003ctd\u003eUnlicensed; research material only\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eWADA section\u003c\/td\u003e\n\u003ctd\u003eS2, named under thymosin beta-4 and its derivatives\u003c\/td\u003e\n\u003ctd\u003eS0, non-approved substances\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003cp\u003eThe difference that matters most for a buyer is definition. BPC-157 has one sequence, so a certificate either finds it or does not. TB-500 is a trade name that has been applied to two different molecules, so a certificate must say which one it found before its purity figure means anything. The proposed biology also differs: thymosin beta-4's established role is holding actin in its unpolymerised form, which governs cell movement, while most BPC-157 work comes from rodent gut and tendon models. No human study has compared them, neither can be ranked above the other, and we publish no guidance on using them together. The \u003ca href=\"\/en-ro\/collections\/bpc-157\"\u003eBPC-157 collection\u003c\/a\u003e lists every brand we hold, and \u003ca href=\"\/en-ro\/blogs\/news\/bpc-157-what-research-shows\"\u003eBPC-157: what the research shows\u003c\/a\u003e reviews its evidence.\u003c\/p\u003e\n\u003ch2\u003eReading the certificate of analysis for this product\u003c\/h2\u003e\n\u003cp\u003eYakka Strength 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 Yakka Strength products we show a certificate of analysis only where the manufacturer 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. On a certificate for this pack, check these lines.\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eIdentity and method.\u003c\/strong\u003e LC-MS weighs the molecule and is the stronger test. The Ac-LKKTETQ fragment has a monoisotopic mass of about 888.5, usually seen as an ion near m\/z 889.5 or, doubly charged, near m\/z 445.3. Full thymosin beta-4 is far heavier and appears as a spread of multiply charged ions. HPLC alone only matches a retention time to a reference standard.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePurity (%).\u003c\/strong\u003e The share of the chromatogram taken by the main peak. It grades cleanliness, not quantity.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eContent per capsule.\u003c\/strong\u003e The measured amount of peptide in a capsule, the figure the label omits. For peptides, check whether it is net peptide or total powder, since water and acetate counter-ions add weight.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eBatch number.\u003c\/strong\u003e It must match the lot printed on the tub you hold.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWho tested it, and when.\u003c\/strong\u003e A named laboratory can be asked to confirm the report; the date shows whether it predates the stock.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eFor this brand, each missing field has a specific cost. No identity line means the certificate cannot settle whether the product is the fragment or the full protein. No content line means the 250 mcg on the label stays unverified. A different or absent batch number means the report describes other material. \u003ca href=\"\/en-ro\/pages\/contact\"\u003eContact us\u003c\/a\u003e with the lot number for what exists on current stock; 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\"\u003eguide to reading a COA\u003c\/a\u003e go further.\u003c\/p\u003e\n\u003ch2\u003eDetection, sport and testing\u003c\/h2\u003e\n\u003cp\u003eWADA names thymosin beta-4 and its derivatives, with TB-500 as the example, in section S2 of the Prohibited List. That section applies in and out of competition, across every sport that has adopted the World Anti-Doping Code, including testing by UK Anti-Doping. Under strict liability an athlete is responsible for any prohibited substance in their sample, whatever the label said.\u003c\/p\u003e\n\u003cp\u003eDetection methods have been published for more than a decade. The Ghent laboratory proposed an LC-MS\/MS strategy for the Ac-LKKTETQ fragment in plasma and urine in 2012, and the Hong Kong racing laboratory reported confirmation of the fragment at 0.01 ng\/mL in equine urine and 0.02 ng\/mL in equine plasma, together with its metabolites, after a single administration to horses. Those limits come from horse samples. No published study has set out how long TB-500 remains detectable in human urine, so the accurate statement is that it is detectable and the window is not established.\u003c\/p\u003e\n\u003ch2\u003eStorage, stability and handling\u003c\/h2\u003e\n\u003cp\u003eNo stability study of TB-500 capsules has been published, so the expiry or best-before date printed by the manufacturer, if present, is the limit to work to. General peptide chemistry still identifies the risks. Moisture allows peptide bonds to hydrolyse and makes powder clump and capsule shells soften. Heat accelerates every degradation reaction, and light adds to it. Full thymosin beta-4 also contains a methionine residue, which oxidises readily, whereas the Ac-LKKTETQ fragment has none.\u003c\/p\u003e\n\u003cp\u003eKeep the tub closed somewhere cool and dry, away from direct light, radiators and damp rooms. If it is refrigerated, let it reach room temperature before opening so condensation does not form inside, and leave any desiccant sachet in the tub. Write the opening date next to the batch number. Handle the capsules as a laboratory reagent: gloves for opened capsules or loose powder, well away from food and drink, and out of reach of children and animals. Dispose of waste as chemical waste, not in household bins or drains. Keep capsules in their original container so they stay linked to the lot number and any certificate.\u003c\/p\u003e\n\u003ch2\u003eGlossary\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eThymosin beta-4\u003c\/strong\u003e: a 43-amino-acid protein found inside most human cells that binds actin; TB-500 products are based on it.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eAc-LKKTETQ\u003c\/strong\u003e: the seven-residue fragment of thymosin beta-4 (positions 17 to 23), with an acetyl group added, that anti-doping laboratories identified in TB-500 products.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eActin\u003c\/strong\u003e: the protein that forms filaments inside cells and drives cell shape and movement.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eG-actin\u003c\/strong\u003e: single, unpolymerised actin units; thymosin beta-4 holds a reserve of these.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eAcetylation\u003c\/strong\u003e: capping the first amino acid of a chain with an acetyl group (the \"Ac\" in Ac-LKKTETQ), adding 42 mass units.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eLC-MS\/MS\u003c\/strong\u003e: liquid chromatography linked to tandem mass spectrometry, which separates, weighs and fragments each molecule for identification.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003em\/z\u003c\/strong\u003e: mass-to-charge ratio, the value a mass spectrometer reports for each ion.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eStrict liability\u003c\/strong\u003e: under the World Anti-Doping Code, a positive sample is a violation whether or not the athlete knew what the product contained.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2\u003eAbout Yakka Strength TB-500 Peptide Capsules\u003c\/h2\u003e\n\u003cp\u003eYakka Strength prints its two peptide pots in purple on its black label; this is the TB500 one. The front shows the compound name, capsule count and research-only wording. The side facts panel reads TB500, 250 mcg per capsule, sixty capsules per container, \"Made in the UK\", so 15 mg per pot as labelled; the back panel carries the Yakka Strength Ltd distributor line. The brand's product page calls the contents a synthetic peptide and no more: it does not say whether the pot holds the acetylated 17-23 fragment that laboratories have found in products sold as TB-500 or full-length thymosin beta-4, so the labelled figure cannot yet be tied to a specific molecule.\u003c\/p\u003e\n\u003cp\u003eYakka Strength Ltd (company 13284431, registered since 2021 in County Durham) is chiefly a gym equipment and sports nutrition retailer. TB500 appears in four of its research items: this pot, the \u003ca href=\"\/en-ro\/products\/yakka-strength-yakka-strength-wolverine-stack-bpc157-tb500-capsule-peptide-bundle\"\u003eWolverine Stack\u003c\/a\u003e (this pot with the BPC157 pot, two pots of 60), the \u003ca href=\"\/en-ro\/products\/yakka-strength-yakka-strength-mk677-tb500-capsule-bundle\"\u003eMK677 and TB500 bundle\u003c\/a\u003e and the \u003ca href=\"\/en-ro\/products\/yakka-strength-yakka-strength-mk677-bpc157-tb500-capsule-bundle\"\u003eMK677, BPC157 and TB500 bundle\u003c\/a\u003e. See the \u003ca href=\"\/en-ro\/collections\/brand-yakka-strength\"\u003eYakka Strength brand page\u003c\/a\u003e for the whole range. Nothing on the brand's site mentions testing, and no manufacturer is named, so the route to checking a pot is through us: read the lot number off the container (the label design carries none), ask which document Yakka Strength has sent for that lot, and look first at the identity line, then at content per capsule against the 250 mcg declared.\u003c\/p\u003e\n\u003cp\u003eTB-500 is a research-market name for synthetic peptides derived from thymosin beta-4, an endogenous 43-residue protein; the whole protein has reached early clinical trials, the fragment has not. No form of it holds a UK medicines licence or supplement authorisation, and WADA's section S2 covers thymosin beta-4 and its derivatives, naming TB-500. On stated figures, \u003ca href=\"\/en-ro\/collections\/brand-thoroughbred-labs\"\u003eThoroughbred Labs\u003c\/a\u003e labels its TB-500 capsules at 300 mcg in 60 (18 mg per tub); Free Muscle's own TB-500 is 60 capsules with each batch assayed at Janoshik Analytical, and we quote no strength for it here. The \u003ca href=\"\/en-ro\/collections\/tb-500\"\u003eTB-500 collection\u003c\/a\u003e lists them together without ranking.\u003c\/p\u003e\n\u003ch2\u003eRelated\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003ca href=\"\/en-ro\/collections\/tb-500\"\u003eAll brands of TB-500 we stock, compared\u003c\/a\u003e, including \u003ca href=\"\/en-ro\/products\/thoroughbred-labs-tb500-peptide-capsule-ndash-thoroughbred-labs\"\u003eThoroughbred Labs TB-500 capsules\u003c\/a\u003e\n\u003c\/li\u003e\n\u003cli\u003e\u003ca href=\"\/en-ro\/collections\/brand-yakka-strength\"\u003eAll Yakka Strength products\u003c\/a\u003e\u003c\/li\u003e\n\u003cli\u003e\n\u003ca href=\"\/en-ro\/collections\/peptides\"\u003eResearch peptides\u003c\/a\u003e and \u003ca href=\"\/en-ro\/products\/yakka-strength-yakka-strength-bpc157-peptide-capsules\"\u003eYakka Strength BPC-157 capsules\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\u003eGoldstein AL, et al. Thymosin beta4: a multi-functional regenerative peptide. Basic properties and clinical applications. Expert Opin Biol Ther. 2012;12(1):37-51. \u003ca href=\"https:\/\/pubmed.ncbi.nlm.nih.gov\/22074294\/\" rel=\"noopener\"\u003ePMID: 22074294\u003c\/a\u003e.\u003c\/li\u003e\n\u003cli\u003eRuff D, et al. A randomized, placebo-controlled, single and multiple dose study of intravenous thymosin beta4 in healthy volunteers. Ann N Y Acad Sci. 2010;1194:223-9. \u003ca href=\"https:\/\/pubmed.ncbi.nlm.nih.gov\/20536472\/\" rel=\"noopener\"\u003ePMID: 20536472\u003c\/a\u003e.\u003c\/li\u003e\n\u003cli\u003eEsposito S, et al. Synthesis and characterization of the N-terminal acetylated 17-23 fragment of thymosin beta 4 identified in TB-500, a product suspected to possess doping potential. Drug Test Anal. 2012;4(9):733-8. \u003ca href=\"https:\/\/pubmed.ncbi.nlm.nih.gov\/22962027\/\" rel=\"noopener\"\u003ePMID: 22962027\u003c\/a\u003e.\u003c\/li\u003e\n\u003cli\u003eHo EN, et al. Doping control analysis of TB-500, a synthetic version of an active region of thymosin beta4, in equine urine and plasma by liquid chromatography-mass spectrometry. J Chromatogr A. 2012;1265:57-69. \u003ca href=\"https:\/\/pubmed.ncbi.nlm.nih.gov\/23084823\/\" rel=\"noopener\"\u003ePMID: 23084823\u003c\/a\u003e.\u003c\/li\u003e\n\u003c\/ol\u003e","brand":"Yakka Strength","offers":[{"title":"Default Title","offer_id":48468982956258,"sku":null,"price":46.99,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0772\/3499\/5426\/files\/yakka-strength-tb500-peptide-capsules-pack-shot-white.jpg?v=1791052915"}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0772\/3499\/5426\/collections\/IMG-2904.jpg?v=1790530355","url":"https:\/\/freemuscle.co.uk\/en-ro\/collections\/peptides.oembed","provider":"Free Muscle","version":"1.0","type":"link"}