{"title":"BioLab","description":"\u003cp\u003e\u003cstrong\u003eBioLab\u003c\/strong\u003e is the brand behind the Biolab Shop web shops, which sell to customers in the UK, across the EU and in North America. Its catalogue spans food supplements, sports nutrition, nootropics and cosmetics, with a separate line of peptides and other compounds that it labels for laboratory research only. Free Muscle stocks four of those research listings through Muscle Market: Metabolic Boost, BioLab's product name for SLU-PP-332 capsules, at 100, 200 and 500 mcg, and BPC-157 as the hydrochloride salt at 200 mcg, each in a tub of 60 capsules.\u003c\/p\u003e\n\n\u003ch2\u003eAbout BioLab\u003c\/h2\u003e\n\u003cp\u003eBioLab says its catalogue runs to more than 400 products and that it has more than six years of experience in supplementation (home and About pages, checked 2 October 2026). On its Lab Tests page it separates its dietary supplements from what it calls preparations for laboratory testing: concentrated substances that, by its account, are for research and laboratory work only, not for consumption, and of which BioLab is only the distributor. It does not name their maker, so we call BioLab the brand of the capsules listed here, not their manufacturer.\u003c\/p\u003e\n\u003cp\u003eIts research product pages add a notice that the product is neither a drug nor a food and belongs with qualified people in a laboratory. Several unrelated companies and shops trade under similar names, so the tub itself is the practical way to recognise BioLab stock.\u003c\/p\u003e\n\u003ch3\u003eHow BioLab labels its tubs\u003c\/h3\u003e\n\u003cp\u003eBioLab research tubs are purple-blue with a black cap, a BIOLAB band and a white tiger-head emblem. The name bar reads BPC-157 HCL (pink trim) or METABOLIC BOOST over SLU-PP-332 (orange trim), and arrow tags give the strength per capsule and the count, such as 200 MCG\/CAPS and 60 CAPS. Our photos show the front only, so look elsewhere on the label for a lot number and expiry date.\u003c\/p\u003e\n\u003ch2\u003eWhat is in the BioLab range\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eSLU-PP-332\u003c\/strong\u003e, sold by BioLab under its product name Metabolic Boost, in three strengths: \u003ca href=\"\/en-ro\/products\/biolab-metabolic-boost-slu-pp-332-100-mcg-60-caps\"\u003e100 mcg\u003c\/a\u003e, \u003ca href=\"\/en-ro\/products\/biolab-metabolic-boost-slu-pp-332-200-mcg-60-caps\"\u003e200 mcg\u003c\/a\u003e and \u003ca href=\"\/en-ro\/products\/biolab-metabolic-boost-slu-pp-332-500-mcg-60-caps\"\u003e500 mcg\u003c\/a\u003e, each 60 capsules. SLU-PP-332 is an experimental oestrogen-related receptor (ERR) agonist studied in rodent models; it has no human trial data and no approval anywhere. All brands are compared on the \u003ca href=\"\/en-ro\/collections\/slu-pp-332\"\u003eSLU-PP-332 collection\u003c\/a\u003e.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eBPC-157 HCl\u003c\/strong\u003e, 200 mcg, 60 capsules: \u003ca href=\"\/en-ro\/products\/biolab-bpc-157-hcl-200-mcg-60-caps\"\u003eBioLab BPC-157 HCl 200 mcg\u003c\/a\u003e. BPC-157 is a synthetic 15-amino-acid peptide derived from a gastric protein sequence; published work is largely in animal models. See the \u003ca href=\"\/en-ro\/collections\/bpc-157\"\u003eBPC-157 collection\u003c\/a\u003e for the other brands we stock.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eBioLab's own shop lists more than we stock: a fourth SLU-PP-332 capsule, in a 30-capsule tub under a different name, BPC-157 capsules in arginate (ARG) as well as HCl form at 100 and 200 mcg, and 5 mg, 10 mg and spray listings of BPC-157.\u003c\/p\u003e\n\u003ch3\u003eHow to compare listings\u003c\/h3\u003e\n\u003cp\u003eBecause BioLab states strength in micrograms, multiply the per-capsule figure by 60 to get the total content of the pack, then divide the price by that number to compare cost per microgram with another brand or strength. The three SLU-PP-332 listings contain 6 mg, 12 mg and 30 mg per pack respectively. Our article on \u003ca href=\"\/en-ro\/blogs\/news\/price-per-mg-compare-sarms-peptides\"\u003eprice per milligram\u003c\/a\u003e covers the method. Strength is a product fact for laboratory selection, not a recommendation.\u003c\/p\u003e\n\n\u003ch2\u003eBatch testing and certificates of analysis\u003c\/h2\u003e\n\u003cp\u003eBioLab is a third-party brand, so its batches are not part of the Janoshik Analytical testing programme that covers the Free Muscle brand. For BioLab products, a certificate of analysis is shown only where BioLab supplies one for the specific batch we hold. Where no certificate is available for a batch, the listing does not claim one. A certificate should carry the batch number, the tested identity of the compound and the measured purity; a generic document with no batch number is not a batch certificate. Our \u003ca href=\"\/en-ro\/pages\/lab-tests\"\u003elab tests page\u003c\/a\u003e explains how to read one and what we can and cannot provide for each brand. Buyers who need certificate-backed batches for every product may prefer the \u003ca href=\"\/en-ro\/collections\/brand-free-muscle\"\u003eFree Muscle range\u003c\/a\u003e.\u003c\/p\u003e\n\n\u003ch3\u003eWhat BioLab says about testing\u003c\/h3\u003e\n\u003cp\u003eBioLab says it commissions content tests from independent laboratories, measuring how much of a substance a product holds and not only its purity, and that it keeps more than 500 laboratory reports on the substances it uses. It says each product's current report sits in the product's photo gallery and under a Tests tab on its own shop, and that customers can ask it for the latest.\u003c\/p\u003e\n\u003ch3\u003eThe BioLab reports on our listings\u003c\/h3\u003e\n\u003ctable\u003e\n\u003cthead\u003e\u003ctr\u003e\n\u003cth\u003eListing\u003c\/th\u003e\n\u003cth\u003eLaboratory and date\u003c\/th\u003e\n\u003cth\u003eLabel strength\u003c\/th\u003e\n\u003cth\u003eMeasured content\u003c\/th\u003e\n\u003c\/tr\u003e\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003ca href=\"\/en-ro\/products\/biolab-bpc-157-hcl-200-mcg-60-caps\"\u003eBPC-157 HCl 200 mcg\u003c\/a\u003e\u003c\/td\u003e\n\u003ctd\u003eAnaliza Białek, Wrocław, September 2022\u003c\/td\u003e\n\u003ctd\u003e200 mcg per capsule\u003c\/td\u003e\n\u003ctd\u003e195 mcg per unit\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003ca href=\"\/en-ro\/products\/biolab-metabolic-boost-slu-pp-332-100-mcg-60-caps\"\u003eMetabolic Boost 100 mcg\u003c\/a\u003e\u003c\/td\u003e\n\u003ctd\u003eAnaliza Białek, Wrocław, October 2024\u003c\/td\u003e\n\u003ctd\u003e100 mcg per capsule\u003c\/td\u003e\n\u003ctd\u003e118.34 mcg per capsule\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003cp\u003eBoth reports name the client as BIOLAB CENTER, used HPLC, and identify the sample by the laboratory's order number and a photograph of the tub instead of a batch number; BioLab quotes the same 118.34 mcg figure on its own product page. Analiza Białek sp. z o.o. is entered in the Polish National Court Register (KRS 0000966168) as a technical testing company, and the tax and statistical numbers on the reports match that entry. Neither report states a purity figure, and with no batch number neither can be tied to the tub you receive. The 200 mcg and 500 mcg Metabolic Boost listings carry no BioLab report.\u003c\/p\u003e\n\u003ch2\u003eHow to check a BioLab batch\u003c\/h2\u003e\n\u003col\u003e\n\u003cli\u003eNote any lot number and expiry date on your tub, and keep it in its original packaging.\u003c\/li\u003e\n\u003cli\u003eRead the report in the product gallery: laboratory, date, label strength, measured content, and whether purity and a batch number are given.\u003c\/li\u003e\n\u003cli\u003eCompare dates: a 2022 or 2024 report describes the sample tested then, not necessarily a later lot.\u003c\/li\u003e\n\u003cli\u003eLook up the laboratory's KRS number in the Polish National Court Register.\u003c\/li\u003e\n\u003cli\u003eSend the product name and lot number via our \u003ca href=\"\/en-ro\/pages\/contact\"\u003econtact page\u003c\/a\u003e to ask what BioLab has supplied for that lot. BioLab says it also sends its current report on request.\u003c\/li\u003e\n\u003c\/ol\u003e\n\u003ch2\u003eWhere to buy BioLab in the UK: how to check a supplier\u003c\/h2\u003e\n\u003cp\u003eWhichever shop you buy BioLab 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. For BioLab, a certificate is shown where the brand supplies one for the batch we hold.\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; the comparison table above does this for every listing here that states both. 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\u003eOther brands we stock: \u003ca href=\"\/en-ro\/collections\/brand-free-muscle\"\u003eFree Muscle\u003c\/a\u003e, \u003ca href=\"\/en-ro\/collections\/brand-imuscle\"\u003eiMuscle\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. Compare them side by side in the \u003ca href=\"\/en-ro\/pages\/muscle-market\"\u003eMuscle Market\u003c\/a\u003e.\u003c\/p\u003e\n\n\u003ch2\u003eLegal status in the UK\u003c\/h2\u003e\n\u003cp\u003eNeither SLU-PP-332 nor BPC-157 is a licensed medicine. Neither has been assessed by the MHRA, and neither is an authorised food supplement. They are supplied to adults aged 18 or over for laboratory research only and are not for human consumption. In sport, both fall under the World Anti-Doping Agency category for substances with no current approval for human use and are therefore prohibited at all times.\u003c\/p\u003e\n\n\u003ch2\u003eDelivery and returns\u003c\/h2\u003e\n\u003cp\u003eEvery 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. Unopened items can be returned within 30 days. Full details are on our \u003ca href=\"\/en-ro\/pages\/shipping\"\u003eshipping page\u003c\/a\u003e and \u003ca href=\"\/en-ro\/pages\/guarantee\"\u003eguarantee page\u003c\/a\u003e. Customers must be 18 or over.\u003c\/p\u003e\n\n\u003ch2\u003eRelated reading\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003e\u003ca href=\"\/en-ro\/blogs\/news\/muscle-market-brands-compared\"\u003eMuscle Market brands compared: Thoroughbred Labs, Yakka Strength, BioLab, iMuscle\u003c\/a\u003e\u003c\/li\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\/do-oral-peptides-work\"\u003eDo oral peptides actually work? The honest answer\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\u003c\/a\u003e\u003c\/li\u003e\n\u003cli\u003e\u003ca href=\"\/en-ro\/blogs\/news\/muscle-market-launch\"\u003eMuscle Market: five brands, one basket, one parcel\u003c\/a\u003e\u003c\/li\u003e\n\u003cli\u003eCompound pages: \u003ca href=\"\/en-ro\/collections\/slu-pp-332\"\u003eSLU-PP-332\u003c\/a\u003e, \u003ca href=\"\/en-ro\/collections\/bpc-157\"\u003eBPC-157\u003c\/a\u003e, \u003ca href=\"\/en-ro\/collections\/5-amino-1mq\"\u003e5-Amino-1MQ\u003c\/a\u003e, \u003ca href=\"\/en-ro\/collections\/tb-500\"\u003eTB-500\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","products":[{"product_id":"biolab-bpc-157-hcl-200-mcg-60-caps","title":"BioLab BPC-157 HCl 200 mcg, 60 caps","description":"\u003cp\u003e\u003cstrong\u003eBioLab BPC-157 HCl 200 mcg, 60 caps\u003c\/strong\u003e is a BioLab listing of BPC-157, labelled at 200 mcg (0.2 mg) per capsule, 60 capsules per pack. It is supplied through the \u003ca href=\"\/en-ro\/pages\/muscle-market\"\u003eMuscle Market\u003c\/a\u003e range for laboratory research only, is not for human consumption, and is sold to adults aged 18 and over. Below: what the published research on BPC-157 reports, what the label documents, how the UK rules and sport rules apply, and how batch certificates are handled for BioLab products.\u003c\/p\u003e\n\u003ch2\u003eAbout BPC-157\u003c\/h2\u003e\n\u003cp\u003eBPC-157, also written BPC157 and sometimes called body protection compound or pentadecapeptide BPC 157, is a synthetic chain of fifteen amino acids. Its sequence is a partial fragment of a protein identified in human gastric juice. In the laboratory it has been studied almost entirely in rodents and cell cultures, where research groups have examined models of tendon, ligament, muscle, gut and blood vessel injury and have described involvement of nitric oxide signalling and angiogenic growth factor pathways.\u003c\/p\u003e\n\u003cp\u003eThe \"HCl\" in this product name means the peptide is described as a hydrochloride salt. Peptides usually leave purification paired with a counter-ion such as acetate or chloride. The counter-ion adds weight without adding peptide, so a quoted mass can refer either to the salt or to the peptide within it. BioLab does not say which basis its 200 mcg figure uses. The identifiers below, taken from PubChem, describe the parent peptide.\u003c\/p\u003e\n\u003ctable\u003e\n\u003cthead\u003e\u003ctr\u003e\n\u003cth\u003eProperty\u003c\/th\u003e\n\u003cth\u003eValue for the parent peptide\u003c\/th\u003e\n\u003c\/tr\u003e\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003eAmino acid sequence\u003c\/td\u003e\n\u003ctd\u003eGEPPPGKPADDAGLV\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMolecular formula\u003c\/td\u003e\n\u003ctd\u003eC62H98N16O22\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMolecular weight\u003c\/td\u003e\n\u003ctd\u003e1419.5 g\/mol\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eCAS number\u003c\/td\u003e\n\u003ctd\u003e137525-51-0\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003ePubChem CID\u003c\/td\u003e\n\u003ctd\u003e9941957\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOther names on record\u003c\/td\u003e\n\u003ctd\u003eBepecin, PL-10, PLD-116\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003ch2\u003eWhat the published research reports\u003c\/h2\u003e\n\u003cp\u003eA 2011 laboratory study from Taiwan used tendon explants and fibroblasts taken from rat Achilles tendon. BPC-157 was associated with faster outgrowth of cells from the explants, better survival of cells under oxidative stress and more cell migration, although it did not directly increase cell proliferation. The authors linked these effects to the FAK-paxillin signalling pathway; the work was confined to cells and tissue in culture. A 2016 review by the Zagreb group that has produced most of the BPC-157 literature summarised its own brain-gut axis work in animals; it is a review of that group's research rather than independent confirmation.\u003c\/p\u003e\n\u003cp\u003eThe most complete independent appraisal so far is a 2025 systematic review from Case Western Reserve University, which screened 544 records published between 1993 and 2024 and kept 36 studies. Thirty-five were preclinical. The single clinical paper was a retrospective case series in which 7 of 12 patients given an injection into the knee for chronic pain reported relief lasting more than six months; it had no control group, and it concerned injection, not capsules. The reviewers graded the whole body of evidence at levels IV and V, the lowest tiers, found no clinical data on adverse effects in humans, and flagged unregulated manufacture and contamination as hazards.\u003c\/p\u003e\n\u003cp\u003eThe limitations therefore matter more than any single finding: almost all of the evidence comes from a single research network, no randomised controlled trial in humans has been published in full, and BPC-157 has never been authorised as a medicine anywhere. Nothing above is a claim about this product. A longer account is in \u003ca href=\"\/en-ro\/blogs\/news\/bpc-157-what-research-shows\"\u003eBPC-157: what the research actually shows, and what it does not\u003c\/a\u003e.\u003c\/p\u003e\n\u003ch2\u003eThis listing\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003eBrand: \u003ca href=\"\/en-ro\/collections\/brand-biolab\"\u003eBioLab\u003c\/a\u003e\n\u003c\/li\u003e\n\u003cli\u003eCompound: BPC-157, labelled as the hydrochloride (HCl)\u003c\/li\u003e\n\u003cli\u003eForm: Capsules\u003c\/li\u003e\n\u003cli\u003ePack size: 60 capsules\u003c\/li\u003e\n\u003cli\u003eStrength: 200 mcg (0.2 mg) per capsule, as printed on the BioLab label\u003c\/li\u003e\n\u003cli\u003eTotal in pack: 12 mg (200 mcg x 60 capsules)\u003c\/li\u003e\n\u003cli\u003eBatch certificate of analysis: shown where BioLab supplies one for the batch we hold\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eBecause BioLab states a strength, this pack can be set against other brands on total milligrams, which is the basis our \u003ca href=\"\/en-ro\/collections\/bpc-157\"\u003eBPC-157 collection\u003c\/a\u003e uses. The method is explained in \u003ca href=\"\/en-ro\/blogs\/news\/price-per-mg-compare-sarms-peptides\"\u003eprice per milligram\u003c\/a\u003e.\u003c\/p\u003e\n\u003ch2\u003eBPC-157 in the UK: buying, legal status and what to check\u003c\/h2\u003e\n\u003cp\u003eSearches such as \"BPC 157 UK legal\" and \"BPC 157 UK buy\" ask two separate things: may it be sold here, and how can a buyer judge a seller.\u003c\/p\u003e\n\u003ch3\u003eWhere the law stands\u003c\/h3\u003e\n\u003cp\u003eBPC-157 is not a licensed medicine in the UK and has not been assessed by the MHRA. It is not an authorised food supplement, so it may not be marketed for eating or swallowing, and it is not a controlled drug. That combination leaves one lawful basis for sale: as a material for laboratory research, supplied to adults aged 18 and over, with no instructions for use in people. Because no licensed BPC-157 product exists in any country, it is not something a GP or the NHS can prescribe. Buyers remain responsible for any rules that apply to them, including anti-doping rules.\u003c\/p\u003e\n\u003ch3\u003eSigns of a careful listing\u003c\/h3\u003e\n\u003col\u003e\n\u003cli\u003eThe brand is named and the seller is an identifiable business with a contact route.\u003c\/li\u003e\n\u003cli\u003eThe label gives a strength per capsule and a pack count, so the total can be worked out.\u003c\/li\u003e\n\u003cli\u003eEach pack carries a batch or lot number.\u003c\/li\u003e\n\u003cli\u003eAny certificate offered carries that same batch number and names the laboratory.\u003c\/li\u003e\n\u003cli\u003eThe page describes research rather than promising results, and carries no dosing directions.\u003c\/li\u003e\n\u003cli\u003eDelivery is tracked, packaging is plain, and the returns terms are written down.\u003c\/li\u003e\n\u003c\/ol\u003e\n\u003ch3\u003eHow this listing measures up\u003c\/h3\u003e\n\u003cp\u003eThe seller is named: FreeMuscle, registered in Andorra, with UK operations and dispatch in Scunthorpe. BioLab is named as the brand, and the label states 200 mcg per capsule across 60 capsules, so points one and two are met. Points three and four depend on BioLab: the product photos do not show where a lot number is printed, and the BioLab report shown on this page has no batch number, so it cannot be matched to a lot. Sales are limited to adults, and this page gives no directions. Every UK order ships free by tracked delivery in plain packaging, orders placed before 2pm Monday to Friday are processed the same working day, EU delivery takes 3-7 working days, and unopened items may be returned within 30 days under our \u003ca href=\"\/en-ro\/pages\/guarantee\"\u003eguarantee\u003c\/a\u003e. Our \u003ca href=\"\/en-ro\/blogs\/news\/how-to-choose-a-sarms-supplier-uk-checklist\"\u003eUK supplier checklist\u003c\/a\u003e expands on each point.\u003c\/p\u003e\n\u003ch2\u003eCapsules compared with other forms\u003c\/h2\u003e\n\u003cp\u003eThe query \"BPC 157 capsules vs injection\" asks whether the delivery format changes what reaches the body. The honest answer is that nobody has measured it for capsules. Research on BPC-157 has used several routes: injection into the abdominal cavity in most rodent work, direct application in some wound models, and in certain Zagreb experiments the peptide was dissolved in the animals' drinking water. The 2025 systematic review reported that, in the animal data available, BPC-157 has a half-life of under 30 minutes, is metabolised in the liver and is cleared by the kidneys. None of those figures comes from a swallowed capsule in a person.\u003c\/p\u003e\n\u003cp\u003eThe underlying problem for any peptide taken by mouth is digestion. Stomach acid and pepsin, then pancreatic and brush-border enzymes, cleave peptide bonds, and a fifteen-residue chain is well within their range. The originating group reports that BPC-157 resists human gastric juice, but whether intact peptide crosses the gut wall in people is unknown.\u003c\/p\u003e\n\u003cp\u003eAs laboratory materials the formats behave differently. Capsules hold a fixed weight of dry powder, usually diluted with a filler, so uniformity depends on how well the batch was blended; a 200 mcg fill is a tiny fraction of the capsule contents, which makes even mixing harder. Lyophilised powder in vials stays dry until reconstituted; solutions, including ready-made liquids, are exposed to hydrolysis and contamination. None of this implies that any format has an effect. Both routes are examined in \u003ca href=\"\/en-ro\/blogs\/news\/bpc-157-capsules-vs-injection-what-studies-used\"\u003ewhat the studies used\u003c\/a\u003e and in \u003ca href=\"\/en-ro\/blogs\/news\/do-oral-peptides-work\"\u003edo oral peptides work\u003c\/a\u003e.\u003c\/p\u003e\n\u003ch2\u003eBPC-157 compared with TB-500\u003c\/h2\u003e\n\u003cp\u003eTB-500 is the compound searched most often next to BPC-157, as in \"BPC 157 and TB 500\" and \"TB 500 vs BPC 157\". They are often sold side by side, but they are unrelated molecules.\u003c\/p\u003e\n\u003cp\u003eBPC-157 is a 15-residue fragment traced to a gastric juice protein and weighs about 1,420 g\/mol. TB-500 is marketed as a synthetic peptide derived from thymosin beta-4, a 43-amino-acid protein of about 4,963 g\/mol found inside most cells, where it binds monomeric actin, the building block of the cell's internal scaffolding, and so influences how cells move. Thymosin beta-4 research is spread across many groups and mostly uses the full-length protein, including small early clinical studies of eye and skin preparations; the fragment sold as TB-500 has no comparable human data, and BPC-157 work comes mostly from one Zagreb network.\u003c\/p\u003e\n\u003ctable\u003e\n\u003cthead\u003e\u003ctr\u003e\n\u003cth\u003eQuestion\u003c\/th\u003e\n\u003cth\u003eBPC-157\u003c\/th\u003e\n\u003cth\u003eTB-500\u003c\/th\u003e\n\u003c\/tr\u003e\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003eParent molecule\u003c\/td\u003e\n\u003ctd\u003eGastric juice protein\u003c\/td\u003e\n\u003ctd\u003eThymosin beta-4\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eSize\u003c\/td\u003e\n\u003ctd\u003e15 amino acids\u003c\/td\u003e\n\u003ctd\u003eFragment of a 43-amino-acid protein\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eLicensed as a medicine\u003c\/td\u003e\n\u003ctd\u003eNowhere\u003c\/td\u003e\n\u003ctd\u003eNowhere\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eWADA section\u003c\/td\u003e\n\u003ctd\u003eS0, non-approved substances\u003c\/td\u003e\n\u003ctd\u003eS2, growth factor modulators\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eProhibited\u003c\/td\u003e\n\u003ctd\u003eAt all times\u003c\/td\u003e\n\u003ctd\u003eAt all times\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003cp\u003eNo study has compared the two directly, so there is no basis for ranking one above the other, and we publish nothing on using them together. TB-500 brands we hold are in the \u003ca href=\"\/en-ro\/collections\/tb-500\"\u003eTB-500 collection\u003c\/a\u003e, for example \u003ca href=\"\/en-ro\/products\/thoroughbred-labs-tb500-peptide-capsule-ndash-thoroughbred-labs\"\u003eThoroughbred Labs TB-500 capsules\u003c\/a\u003e, and the literature is summarised in our \u003ca href=\"\/en-ro\/blogs\/news\/tb-500-thymosin-beta-4-research-guide\"\u003eTB-500 research guide\u003c\/a\u003e.\u003c\/p\u003e\n\u003ch2\u003eReading the certificate of analysis for this product\u003c\/h2\u003e\n\u003cp\u003eBioLab is a third-party brand in the Muscle Market range, so the testing position differs from our own label. Every Free Muscle-brand batch is assayed by \u003ca href=\"\/en-ro\/blogs\/news\/what-is-janoshik-analytical\"\u003eJanoshik Analytical\u003c\/a\u003e, an independent laboratory, with the certificate sent on request by email; that applies, for instance, to our \u003ca href=\"\/en-ro\/collections\/bpc-150\"\u003eBPC-150\u003c\/a\u003e capsules, but not to BioLab. For BioLab products we show a certificate of analysis only where BioLab supplies one for the specific batch we hold. A generic PDF with no batch number is not a batch certificate, and we do not present one as such. The report in this listing's gallery comes from Analiza Białek sp. z o.o., a testing laboratory in Wrocław, Poland, and is dated September 2022. It names the sample BIOLAB BPC-157 HCL 200MCG\/TAB, ties it to a lab order reference and a photo of the tub rather than to a batch, and gives a content of 195 mcg per unit by HPLC against the 200 mcg label, with a stated measurement error of plus or minus 0.5 mcg. Its purity and batch number fields are blank, so it records what one sample held in 2022, not what a later lot holds. Read it, or any newer BioLab report, in this order:\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eBatch number\u003c\/strong\u003e: compare it with the lot printed on your pack first. If they differ, nothing else on the page applies to your capsules.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eIdentity method\u003c\/strong\u003e: HPLC compares retention time with a reference standard; LC-MS also measures the molecular mass, which for the parent peptide is close to 1419.5. A mass result is stronger evidence of identity.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePurity\u003c\/strong\u003e: the percentage of the chromatogram taken by the BPC-157 peak. It says how clean the peptide is, not how much is in each capsule.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eContent per capsule\u003c\/strong\u003e: the measured amount, to set against the 200 mcg on the label. Check whether it is reported as salt or as peptide, given the HCl form.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eLaboratory and test date\u003c\/strong\u003e: a named laboratory can be contacted, and the date shows how old the result is relative to the batch.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eIf a field is missing, the certificate proves less. No content line means the 200 mcg figure rests on the label alone; no identity method means the purity figure could describe any peptide. \u003ca href=\"\/en-ro\/pages\/contact\"\u003eContact us\u003c\/a\u003e with the product name and batch number to ask what is held for that batch. See our \u003ca href=\"\/en-ro\/pages\/lab-tests\"\u003elab tests page\u003c\/a\u003e and \u003ca href=\"\/en-ro\/blogs\/news\/how-to-read-a-certificate-of-analysis\"\u003ehow to read a certificate of analysis\u003c\/a\u003e.\u003c\/p\u003e\n\u003ch2\u003eDetection, sport and testing\u003c\/h2\u003e\n\u003cp\u003eBPC-157 has no current approval for human therapeutic use by any health authority, so it falls under section S0 (non-approved substances) of the WADA Prohibited List, where it is now given as a named example. S0 applies at all times, in and out of competition, across every sport that has adopted the World Anti-Doping Code, including those tested by UK Anti-Doping. Under strict liability, an athlete answers for any prohibited substance in their sample, whatever the label said.\u003c\/p\u003e\n\u003cp\u003eA detection method is published. In 2017 the Sports Medicine Research and Testing Laboratory in Salt Lake City reported BPC-157 in confiscated vials and validated a urine test with a limit of detection of 0.1 ng\/mL. The peptide stayed stable in stored urine for at least four days, and a metabolite formed in plasma was proposed as a second marker to make the test more specific. That paper did not measure excretion after human exposure, and no other study has, so the accurate description is detectable, window not established. Athletes should check the current list.\u003c\/p\u003e\n\u003ch2\u003eStorage, stability and handling\u003c\/h2\u003e\n\u003cp\u003eBioLab has not published stability data for this capsule, and no independent study of BPC-157 capsule shelf life exists, so any expiry date printed on the pack is the reference point. Peptide chemistry indicates what shortens it. Water is the main threat, because it allows hydrolysis of peptide bonds; hydrochloride salts of peptides can also draw moisture from the air, so a pack left open in a humid room is at particular risk. Heat speeds degradation and ultraviolet light adds to it. Capsule shells also soften in damp air.\u003c\/p\u003e\n\u003cp\u003eFor the laboratory, that translates into a short routine. Keep the container tightly closed, cool, dry and out of direct sunlight, away from radiators and steamy rooms. Leave any desiccant in place. If the pack is stored cold, allow it to warm to room temperature before opening so moisture does not condense inside. Keep capsules in their original labelled container so they can still be matched to a certificate. Use gloves for opened capsules, keep them away from food, children and pets, and dispose of unwanted material as chemical waste.\u003c\/p\u003e\n\u003ch2\u003eGlossary\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eAmino acid residue\u003c\/strong\u003e: one unit in a peptide chain; BPC-157 has fifteen.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eHydrochloride (HCl)\u003c\/strong\u003e: a salt form in which chloride accompanies the peptide; it adds mass that is not peptide.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCounter-ion\u003c\/strong\u003e: the charged partner, such as chloride or acetate, that stays with a peptide after purification.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMicrogram (mcg)\u003c\/strong\u003e: one thousandth of a milligram; 200 mcg equals 0.2 mg.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePreclinical\u003c\/strong\u003e: research in cells or animals, before any study in people.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSystematic review\u003c\/strong\u003e: a structured search and appraisal of all studies on a question, using stated rules.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eHalf-life\u003c\/strong\u003e: the time taken for the amount of a substance in the body or a sample to fall by half.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eStrict liability\u003c\/strong\u003e: the anti-doping principle that an athlete is responsible for any prohibited substance in their sample.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSection S0\u003c\/strong\u003e: the WADA category for substances with no current approval for human therapeutic use.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2\u003eAbout BioLab BPC-157 HCl\u003c\/h2\u003e\n\u003cp\u003eBioLab sells this product as BPC-157 HCl 200 mcg, 60 capsules, and the tub repeats those facts in two arrow tags, 200 MCG\/CAPS and 60 CAPS, beneath a name bar reading BPC-157 HCL with Body Protection Compound in small type. The pink trim, tiger-head emblem and repeated BIOLAB band follow the brand's design for its research tubs. BioLab presents capsules of this kind as research preparations that are not for consumption, says it distributes them rather than making them, and does not name who manufactures them.\u003c\/p\u003e\n\u003cp\u003eThe HCl in the name separates this capsule from others in BioLab's own range. On its web shop, checked on 2 October 2026, the brand lists BPC-157 capsules in hydrochloride and arginate (ARG) forms, each at 100 and 200 mcg, alongside 5 mg and 10 mg listings and sprays. Free Muscle stocks only this HCl 200 mcg capsule, 12 mg per tub. BioLab says it posts current reports with each product and sends them on request, so a report newer than the 2022 one described above may exist: ask us what is held for the lot on your tub.\u003c\/p\u003e\n\u003cp\u003eTwo other brands of BPC-157 capsules are listed in our \u003ca href=\"\/en-ro\/collections\/bpc-157\"\u003eBPC-157 collection\u003c\/a\u003e, both in 60-capsule tubs. \u003ca href=\"\/en-ro\/products\/yakka-strength-yakka-strength-bpc157-peptide-capsules\"\u003eYakka Strength\u003c\/a\u003e labels 250 mcg per capsule (15 mg per tub) without naming a salt, and \u003ca href=\"\/en-ro\/products\/thoroughbred-labs-bpc157-peptide-capsule-ndash-thoroughbred-labs\"\u003eThoroughbred Labs\u003c\/a\u003e labels 300 mcg of the arginate (18 mg). None of the three labels says whether its figure counts the salt or the peptide alone, so these totals compare label claims rather than measured peptide. Each brand's full range is on its own page: \u003ca href=\"\/en-ro\/collections\/brand-biolab\"\u003eBioLab\u003c\/a\u003e, \u003ca href=\"\/en-ro\/collections\/brand-yakka-strength\"\u003eYakka Strength\u003c\/a\u003e and \u003ca href=\"\/en-ro\/collections\/brand-thoroughbred-labs\"\u003eThoroughbred Labs\u003c\/a\u003e.\u003c\/p\u003e\n\u003cp\u003eAs a compound, BPC-157 is a synthetic fragment of 15 amino acids from a gastric juice protein. A 2025 systematic review counted 35 preclinical studies and a single small clinical case series, which used injection. It has no UK medicines licence or food authorisation, and WADA bans it at all times under section S0.\u003c\/p\u003e\n\u003ch2\u003eRelated\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003e\u003ca href=\"\/en-ro\/collections\/bpc-157\"\u003eAll brands of BPC-157 we stock, compared\u003c\/a\u003e\u003c\/li\u003e\n\u003cli\u003e\u003ca href=\"\/en-ro\/collections\/brand-biolab\"\u003eAll BioLab products\u003c\/a\u003e\u003c\/li\u003e\n\u003cli\u003e\u003ca href=\"\/en-ro\/collections\/peptides\"\u003eResearch peptides\u003c\/a\u003e\u003c\/li\u003e\n\u003cli\u003e\u003ca href=\"\/en-ro\/pages\/lab-tests\"\u003eBatch testing and certificates of analysis\u003c\/a\u003e\u003c\/li\u003e\n\u003cli\u003e\n\u003ca href=\"\/en-ro\/pages\/shipping\"\u003eDelivery\u003c\/a\u003e and \u003ca href=\"\/en-ro\/pages\/guarantee\"\u003ereturns\u003c\/a\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cem\u003eResearch compounds sold by Free Muscle are supplied for laboratory research use only and are not for human consumption. They are not authorised as medicines by the MHRA, EMA or FDA, are not food supplements, and are sold only to adults aged 18 or over. Nothing on this page is medical or dosing advice. Summaries of published research describe study findings and are not claims about any product.\u003c\/em\u003e\u003c\/p\u003e\n\u003ch2\u003eReferences\u003c\/h2\u003e\n\u003col\u003e\n\u003cli\u003eChang CH, et al. The promoting effect of pentadecapeptide BPC 157 on tendon healing involves tendon outgrowth, cell survival, and cell migration. J Appl Physiol (1985). 2011;110(3):774-80. \u003ca href=\"https:\/\/pubmed.ncbi.nlm.nih.gov\/21030672\/\" rel=\"noopener\"\u003ePMID: 21030672\u003c\/a\u003e.\u003c\/li\u003e\n\u003cli\u003eSikiric P, et al. Brain-gut Axis and Pentadecapeptide BPC 157: Theoretical and Practical Implications. Curr Neuropharmacol. 2016;14(8):857-865. \u003ca href=\"https:\/\/pubmed.ncbi.nlm.nih.gov\/27138887\/\" rel=\"noopener\"\u003ePMID: 27138887\u003c\/a\u003e.\u003c\/li\u003e\n\u003cli\u003eVasireddi N, et al. Emerging Use of BPC-157 in Orthopaedic Sports Medicine: A Systematic Review. HSS J. 2025;21(4):485-495. \u003ca href=\"https:\/\/pubmed.ncbi.nlm.nih.gov\/40756949\/\" rel=\"noopener\"\u003ePMID: 40756949\u003c\/a\u003e.\u003c\/li\u003e\n\u003cli\u003eCox HD, et al. Detection and in vitro metabolism of the confiscated peptides BPC 157 and MGF R23H. Drug Test Anal. 2017;9(10):1490-1498. \u003ca href=\"https:\/\/pubmed.ncbi.nlm.nih.gov\/28035768\/\" rel=\"noopener\"\u003ePMID: 28035768\u003c\/a\u003e.\u003c\/li\u003e\n\u003c\/ol\u003e","brand":"BioLab","offers":[{"title":"Default Title","offer_id":48468978204898,"sku":null,"price":41.99,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0772\/3499\/5426\/files\/bpc-157-hcl-200-mcg-60-caps_e7770d7c-daa4-464f-a726-d14a7b682e94.jpg?v=1789931386"},{"product_id":"biolab-metabolic-boost-slu-pp-332-100-mcg-60-caps","title":"BioLab Metabolic Boost (SLU-PP-332) 100 mcg, 60 caps","description":"\u003cp\u003e\u003cstrong\u003eBioLab Metabolic Boost (SLU-PP-332) 100 mcg, 60 caps\u003c\/strong\u003e is the lowest-strength BioLab listing of SLU-PP-332, labelled at 100 mcg (0.1 mg) per capsule, 60 capsules per pack. \"Metabolic Boost\" is BioLab's trade name, not a description of any effect, and we make no claim that this product does anything in people. It is supplied through the \u003ca href=\"\/en-ro\/pages\/muscle-market\"\u003eMuscle Market\u003c\/a\u003e range for laboratory research only, is not for human consumption, and is sold to adults aged 18 and over.\u003c\/p\u003e\n\u003ch2\u003eAbout SLU-PP-332\u003c\/h2\u003e\n\u003cp\u003eSLU-PP-332, also written SLU PP 332, is a synthetic pan-agonist of the oestrogen-related receptors ERR alpha, beta and gamma. These are orphan nuclear receptors, unrelated to the oestrogen receptor despite the name, that regulate mitochondrial biogenesis and oxidative metabolism in muscle and heart. It was developed by Thomas Burris, John Walker and colleagues, the SLU prefix referring to Saint Louis University, and was first reported as an ERR agonist in 2023. It is behind the exercise-in-a-pill headlines of the last few years.\u003c\/p\u003e\n\u003ctable\u003e\n\u003cthead\u003e\u003ctr\u003e\n\u003cth\u003eIdentifier\u003c\/th\u003e\n\u003cth\u003eSLU-PP-332\u003c\/th\u003e\n\u003c\/tr\u003e\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003eCAS number\u003c\/td\u003e\n\u003ctd\u003e303760-60-3\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMolecular formula\u003c\/td\u003e\n\u003ctd\u003eC18H14N2O2\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMolecular weight\u003c\/td\u003e\n\u003ctd\u003e290.3 g\/mol\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eIUPAC name\u003c\/td\u003e\n\u003ctd\u003e4-hydroxy-N-[(E)-naphthalen-2-ylmethylideneamino]benzamide\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eInChIKey\u003c\/td\u003e\n\u003ctd\u003eRNZIMBFHRXYRLL-XDHOZWIPSA-N\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003ePubChem CID\u003c\/td\u003e\n\u003ctd\u003e5338394\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003cp\u003eChemically it is an acyl hydrazone: a 4-hydroxybenzoyl unit joined to a naphthalene ring through a carbon-nitrogen double bond. It is a small organic molecule, not a peptide, although shops and search engines often file it under peptides.\u003c\/p\u003e\n\u003ch3\u003eWhat the published research reports\u003c\/h3\u003e\n\u003cp\u003eIn the 2023 ACS Chemical Biology paper, SLU-PP-332 increased mitochondrial function and cellular respiration in a skeletal muscle cell line. Mice given the compound showed more type IIa oxidative muscle fibres, a gene expression pattern in muscle resembling the acute response to aerobic exercise, and greater running endurance; the authors reported that ERR alpha activation was critical for the endurance effect. A 2024 follow-up in diet-induced obese and genetically obese (ob\/ob) mice reported increased energy expenditure and fatty acid oxidation, less fat mass accumulation and improved insulin sensitivity. Authors of both papers declared shareholdings in a company developing ERR-based therapeutics.\u003c\/p\u003e\n\u003cp\u003eIn a 2026 paper the same group described a chemically distinct successor, SLU-PP-915, and stated plainly that SLU-PP-332 improves aerobic performance in mice but lacks oral bioavailability; the newer molecule was characterised because it is active by mouth. In that paper SLU-PP-332 was given by intraperitoneal injection, and it too carries a declared conflict of interest: the senior author is named as inventor on the university's intellectual property covering SLU-PP-915 and holds shares in companies developing ERR agonists. There is no human data of any kind, no human pharmacokinetic study, and no safety study in people. It is one of the newest compounds in this market and one of the least characterised. Nothing above is a claim about this product.\u003c\/p\u003e\n\u003ch2\u003eThis listing\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003eBrand: \u003ca href=\"\/en-ro\/collections\/brand-biolab\"\u003eBioLab\u003c\/a\u003e\n\u003c\/li\u003e\n\u003cli\u003eCompound: SLU-PP-332\u003c\/li\u003e\n\u003cli\u003eForm: Capsules\u003c\/li\u003e\n\u003cli\u003ePack size: 60 capsules\u003c\/li\u003e\n\u003cli\u003eStrength: 100 mcg (0.1 mg) per capsule, as printed on the BioLab label\u003c\/li\u003e\n\u003cli\u003eTotal in pack: 6 mg (100 mcg x 60 capsules)\u003c\/li\u003e\n\u003cli\u003eBatch certificate of analysis: shown where BioLab supplies one for the batch we hold\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eBioLab also lists the compound at \u003ca href=\"\/en-ro\/products\/biolab-metabolic-boost-slu-pp-332-200-mcg-60-caps\"\u003e200 mcg per capsule\u003c\/a\u003e (12 mg per pack) and \u003ca href=\"\/en-ro\/products\/biolab-metabolic-boost-slu-pp-332-500-mcg-60-caps\"\u003e500 mcg per capsule\u003c\/a\u003e (30 mg per pack), each in 60 capsules, and \u003ca href=\"\/en-ro\/products\/thoroughbred-labs-slu\"\u003eThoroughbred Labs SLU-PP-332\u003c\/a\u003e is a separate 60-capsule listing labelled at 250 mcg per capsule, or 15 mg per pack. Total milligrams per pack is the fair basis for comparison; our \u003ca href=\"\/en-ro\/blogs\/news\/price-per-mg-compare-sarms-peptides\"\u003eprice per milligram guide\u003c\/a\u003e sets out the method.\u003c\/p\u003e\n\u003ch2\u003eSLU-PP-332 in the UK: buying, legal status and what to check\u003c\/h2\u003e\n\u003cp\u003eSearches such as \"SLU PP 332 UK buy\", \"UK source\" and \"UK reviews\" ask two things: what the law allows, and how to tell a documented listing from an undocumented one.\u003c\/p\u003e\n\u003ch3\u003eThe legal position\u003c\/h3\u003e\n\u003cp\u003eSLU-PP-332 is not a licensed medicine in the UK, has not been assessed by the MHRA, and is not an authorised food supplement or novel food. It is not a controlled drug. No licensed medicine containing it exists anywhere, so it is not something a UK pharmacy supplies as a medicine, and listings on general marketplaces that present it as a supplement describe something it cannot lawfully be sold as. What remains is supply for laboratory research to adults aged 18 and over, which is the only basis for this listing; it is not for human consumption. In sport it is prohibited at all times: as a substance with no current approval for human therapeutic use it is caught at minimum by WADA section S0 (non-approved substances), and anti-doping scientists describe exercise mimetics and metabolic modulators as prohibited. Anyone subject to anti-doping rules should consult the current list. Our \u003ca href=\"\/en-ro\/blogs\/news\/what-are-sarms-the-2026-research-guide\"\u003eresearch guide\u003c\/a\u003e covers the wider legal picture.\u003c\/p\u003e\n\u003ch3\u003eWhat a documented UK listing shows\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eA named brand and a reachable UK seller\u003c\/strong\u003e, so there is someone accountable for the pack.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eStrength per capsule with its unit\u003c\/strong\u003e, micrograms or milligrams, plus the capsule count, so the total can be checked. Confusing mcg with mg is a thousand-fold error.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eA lot number on the container\u003c\/strong\u003e and a certificate carrying the same number, or a plain statement that none is held.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eResearch-use terms\u003c\/strong\u003e: 18+ only, no directions for use, and no talk of fat loss or endurance. Calling SLU-PP-332 an \"exercise pill\" is a claim no regulator has assessed.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eHow this listing compares\u003c\/h3\u003e\n\u003cp\u003eThe seller is named: FreeMuscle, registered in Andorra, with UK operations and dispatch in Scunthorpe. Every UK order travels by free tracked delivery in plain packaging, orders placed before 2pm Monday to Friday are processed the same working day, EU delivery takes 3-7 working days, and unopened items may be returned within 30 days (\u003ca href=\"\/en-ro\/pages\/shipping\"\u003edelivery\u003c\/a\u003e, \u003ca href=\"\/en-ro\/pages\/guarantee\"\u003ereturns\u003c\/a\u003e). BioLab is named and states a strength, so the total per pack can be worked out. The certificate point depends on what BioLab has supplied for the batch in stock, covered below. We do not publish outcome reports. A fuller checklist is in \u003ca href=\"\/en-ro\/blogs\/news\/how-to-choose-a-sarms-supplier-uk-checklist\"\u003ehow to choose a UK supplier\u003c\/a\u003e.\u003c\/p\u003e\n\u003ch2\u003eCapsules compared with other forms\u003c\/h2\u003e\n\u003cp\u003e\"SLU-PP-332 capsules\" and \"SLU-PP-332 injectable\" are both common searches, and the published literature bears directly on the difference. Every in vivo result summarised above came from mice given the compound by injection. The developers themselves describe SLU-PP-332 as lacking oral bioavailability, which is why they went on to make SLU-PP-915. No study has measured what swallowed SLU-PP-332 does in an animal or a person, so we make no comparison of forms on effect.\u003c\/p\u003e\n\u003cp\u003eThe oral-peptide argument does not apply here. SLU-PP-332 is not broken down by digestive proteases, because it is not a peptide; the developers report a bioavailability problem without, in the abstract, giving its cause. For peptides the issue is different, as our article \u003ca href=\"\/en-ro\/blogs\/news\/do-oral-peptides-work\"\u003edo oral peptides work\u003c\/a\u003e explains.\u003c\/p\u003e\n\u003cp\u003eWhere the forms do differ measurably is content and stability:\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eCapsules\u003c\/strong\u003e at 100 mcg hold a very small quantity of active blended into a much larger mass of filler. Content per capsule depends on how evenly that blend was mixed, which is why a content-per-capsule result on the certificate matters more at micrograms than at milligrams.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eLiquids and injectable research products\u003c\/strong\u003e rely on the compound staying dissolved and intact in the solvent. An acyl hydrazone sitting in water is exposed to hydrolysis, and each measured volume is only as accurate as the pipette.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2\u003eSLU-PP-332 compared with cardarine\u003c\/h2\u003e\n\u003cp\u003eCardarine (GW-501516) is the related compound most often searched alongside SLU-PP-332, because both have been called exercise mimetics. They act on different nuclear receptors and have very different histories.\u003c\/p\u003e\n\u003ctable\u003e\n\u003cthead\u003e\u003ctr\u003e\n\u003cth\u003ePoint\u003c\/th\u003e\n\u003cth\u003eSLU-PP-332\u003c\/th\u003e\n\u003cth\u003eCardarine (GW-501516)\u003c\/th\u003e\n\u003c\/tr\u003e\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003eTarget\u003c\/td\u003e\n\u003ctd\u003eERR alpha, beta and gamma (agonist)\u003c\/td\u003e\n\u003ctd\u003ePPAR-delta (selective agonist)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eFormula\u003c\/td\u003e\n\u003ctd\u003eC18H14N2O2\u003c\/td\u003e\n\u003ctd\u003eC21H18F3NO3S2\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMolecular weight\u003c\/td\u003e\n\u003ctd\u003e290.3 g\/mol\u003c\/td\u003e\n\u003ctd\u003e453.5 g\/mol\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eCAS number\u003c\/td\u003e\n\u003ctd\u003e303760-60-3\u003c\/td\u003e\n\u003ctd\u003e317318-70-0\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOrigin\u003c\/td\u003e\n\u003ctd\u003eSaint Louis University, reported as an ERR agonist in 2023\u003c\/td\u003e\n\u003ctd\u003eLigand Pharmaceuticals and GlaxoSmithKline, 1990s\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eHuman data\u003c\/td\u003e\n\u003ctd\u003eNone\u003c\/td\u003e\n\u003ctd\u003eSmall trials of two to six weeks on blood lipids\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eDevelopment\u003c\/td\u003e\n\u003ctd\u003eAcademic, preclinical only\u003c\/td\u003e\n\u003ctd\u003eDiscontinued by GSK in 2007 after rodent carcinogenicity findings\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eUK status\u003c\/td\u003e\n\u003ctd\u003eUnlicensed research compound\u003c\/td\u003e\n\u003ctd\u003eUnlicensed research compound\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eWADA\u003c\/td\u003e\n\u003ctd\u003eProhibited at all times (S0 non-approved substances at minimum)\u003c\/td\u003e\n\u003ctd\u003eS4, metabolic modulators (PPAR-delta agonists)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003cp\u003eOn mechanism, both receptors sit in the cell nucleus and switch on genes for fat oxidation and mitochondrial function in muscle, but they are separate proteins with separate ligands, so one compound is not a variant of the other. On evidence, cardarine is the better documented and the more troubling: its short human trials measured changes in blood lipids, and its pharmaceutical development stopped after long-term rodent studies reported tumours in several organs. WADA issued a public warning about it in 2013. SLU-PP-332 has no human trials, no long-term toxicology and only a handful of mouse papers, so its absence of reported harms reflects an absence of study, not a clean record.\u003c\/p\u003e\n\u003cp\u003eOn regulation they converge: neither is licensed in the UK, neither may be sold for consumption, and both are prohibited at all times in sport, under different sections of the WADA list. No head-to-head study exists, and we do not rank research compounds by effect. The brands held are in the \u003ca href=\"\/en-ro\/collections\/cardarine\"\u003ecardarine collection\u003c\/a\u003e, and the full development history is in \u003ca href=\"\/en-ro\/blogs\/news\/cardarine-gw-501516-what-happened-in-development\"\u003ecardarine (GW-501516): why development stopped\u003c\/a\u003e.\u003c\/p\u003e\n\u003ch2\u003eReading the certificate of analysis for this product\u003c\/h2\u003e\n\u003cp\u003eBioLab is a third-party brand in the Muscle Market range, so the testing position differs from our own label. Every Free Muscle-brand batch is assayed by Janoshik Analytical, an independent laboratory, with the certificate sent on request by email. For BioLab products we show a certificate of analysis only where BioLab supplies one for the specific batch we hold. A generic PDF with no batch number is not a batch certificate, and we do not present one as such. You can contact us with the product name and lot number to ask what is held for that batch. The certificate pictured in this listing's gallery was issued in October 2024 by Analiza Białek sp. z o.o., a registered testing company in Wrocław, Poland. It names the sample BIOLAB METABOLIC BOOST 100MCG\/CAPS and reports 118.34 mcg per capsule by HPLC for a label figure of 100 mcg, with a stated error of plus or minus 0.5 mcg; BioLab quotes the same figure on its own page for this product. The purity and batch number fields are empty, and the sample is known only by a laboratory order reference and a picture of a tub with a shrink-sealed cap, so the result describes that sample rather than your lot. For that report, or any newer one, these are the lines to read:\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eIdentity.\u003c\/strong\u003e HPLC confirms identity only indirectly, by matching a peak's retention time to a reference standard. LC-MS is firmer: SLU-PP-332 has a monoisotopic mass of about 290.11, so the protonated molecule should appear near m\/z 291.1.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePurity (%).\u003c\/strong\u003e The share of the chromatogram taken by the main peak. For a hydrazone, small extra peaks can be the other geometric isomer or breakdown products (4-hydroxybenzohydrazide and 2-naphthaldehyde), which is useful context when purity falls short of the headline figure.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eContent per capsule.\u003c\/strong\u003e The line that tests the 100 mcg label. A purity figure alone says nothing about how much compound each capsule holds.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eBatch number.\u003c\/strong\u003e It must match the lot printed on the pack you have.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eLaboratory and test date.\u003c\/strong\u003e They show who ran the analysis and how old the result is.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eA missing field has a plain meaning. No identity result means nothing independent confirms the compound; no content result leaves the stated strength unverified; a different batch number means the certificate describes other material. \u003ca href=\"\/en-ro\/pages\/contact\"\u003eContact us\u003c\/a\u003e with the lot number, and see \u003ca href=\"\/en-ro\/blogs\/news\/how-to-read-a-certificate-of-analysis\"\u003ehow to read a certificate of analysis\u003c\/a\u003e and our \u003ca href=\"\/en-ro\/pages\/lab-tests\"\u003elab tests page\u003c\/a\u003e.\u003c\/p\u003e\n\u003ch2\u003eDetection, sport and testing\u003c\/h2\u003e\n\u003cp\u003eSLU-PP-332 is prohibited at all times in sport (section S0 at minimum), and the anti-doping community has already started work on finding it. In a 2026 study from the UCLA Olympic Analytical Laboratory, researchers incubated the compound with pooled human liver S9 fractions and used liquid chromatography with high-resolution mass spectrometry to identify 22 metabolites: mono- and dihydroxylated forms, reduced dihydroxylated forms, and glucuronide and sulfate conjugates, some with hydroxylation of the naphthalene or phenolic ring. They named eight of the most abundant as candidate targets for doping control and noted that further work is needed to confirm the structures.\u003c\/p\u003e\n\u003cp\u003eThat is an in vitro result. No human excretion study of SLU-PP-332 has been published, so the accurate statement is: detectable in principle, window not established. Under strict liability an athlete is responsible for any prohibited substance found in their sample, whatever its source, so anyone subject to testing should treat any exposure as reportable. The current list and any updates are published by WADA each year.\u003c\/p\u003e\n\u003ch2\u003eStorage, stability and handling\u003c\/h2\u003e\n\u003cp\u003eNo stability study of SLU-PP-332 capsules has been published, so the expiry printed on the BioLab tub, where there is one, is the only stated limit. The chemistry still points to sensible practice. The hydrazone link is the part of the molecule most open to attack by water, and the reaction is faster in acidic conditions, so moisture is the first thing to keep out. The conjugated naphthalene system absorbs ultraviolet light, and compounds with this kind of carbon-nitrogen double bond can switch between geometric isomers under light, so the container should stay closed and out of sunlight.\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eStore the container shut, in its original packaging, somewhere with a steady temperature, low humidity and no direct light.\u003c\/li\u003e\n\u003cli\u003eA refrigerated container should warm up unopened first, otherwise moist air condenses on cold capsules the moment the lid comes off.\u003c\/li\u003e\n\u003cli\u003eWear gloves for any opened capsule, keep the work area free of food and drink, and store the pack where children and pets cannot reach it.\u003c\/li\u003e\n\u003cli\u003eTreat spent capsules and packaging residues as chemical waste rather than household rubbish or drain waste.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2\u003eGlossary\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eOestrogen-related receptors (ERR)\u003c\/strong\u003e: three nuclear receptors, alpha, beta and gamma, that control genes for energy metabolism; they do not bind oestrogen.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eOrphan nuclear receptor\u003c\/strong\u003e: a receptor whose endogenous activating ligand was unknown when it was discovered.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePan-agonist\u003c\/strong\u003e: a compound that activates every member of a receptor family rather than one subtype.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eExercise mimetic\u003c\/strong\u003e: a research label for a compound that reproduces part of the molecular response to exercise in cells or animals; it is not a finding in people.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eOral bioavailability\u003c\/strong\u003e: the fraction of a swallowed dose that reaches the circulation unchanged.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eAcyl hydrazone\u003c\/strong\u003e: the chemical group linking the two halves of SLU-PP-332, open to hydrolysis in water.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePPAR-delta\u003c\/strong\u003e: the nuclear receptor targeted by cardarine, involved in fatty acid handling in muscle.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eS9 fraction\u003c\/strong\u003e: a liver preparation containing the enzymes that metabolise foreign compounds, used to predict metabolites.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eLC-HRMS\u003c\/strong\u003e: liquid chromatography with high-resolution mass spectrometry, which measures ion masses precisely enough to propose formulas.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2\u003eAbout BioLab Metabolic Boost 100 mcg\u003c\/h2\u003e\n\u003cp\u003eMetabolic Boost is the name BioLab gives its SLU-PP-332 capsules, and the name identifies the product rather than describing what the compound does. The 100 mcg tub is the lowest of three strengths in the line, alongside \u003ca href=\"\/en-ro\/products\/biolab-metabolic-boost-slu-pp-332-200-mcg-60-caps\"\u003e200 mcg\u003c\/a\u003e and \u003ca href=\"\/en-ro\/products\/biolab-metabolic-boost-slu-pp-332-500-mcg-60-caps\"\u003e500 mcg\u003c\/a\u003e versions; all hold 60 capsules, so the labelled totals run 6, 12 and 30 mg. The front of this tub shows the strength twice, in a 100 MCG\/CAPS arrow tag next to 60 CAPS and in a yellow starburst beside the tiger emblem, with SLU-PP-332 printed under the orange METABOLIC BOOST bar. BioLab's shop also lists a separate 30-capsule SLU-PP-332 product under another name, which we do not stock.\u003c\/p\u003e\n\u003cp\u003eBioLab files its research compounds apart from its supplements, calls them preparations for laboratory use that are not for consumption, and describes itself as their distributor; no manufacturer is named. Of the three Metabolic Boost listings, this is the only one carrying a BioLab laboratory report, covered in the certificate section above.\u003c\/p\u003e\n\u003cp\u003eThe other brand of SLU-PP-332 capsules we stock is \u003ca href=\"\/en-ro\/products\/thoroughbred-labs-slu\"\u003eThoroughbred Labs\u003c\/a\u003e, whose 60-capsule tub carries 250 mcg per capsule on its label, 15 mg in all, which places it between BioLab's 200 and 500 mcg tubs on stated content. Thoroughbred Labs publishes its own report for a named batch. Both brands sit side by side in the \u003ca href=\"\/en-ro\/collections\/slu-pp-332\"\u003eSLU-PP-332 collection\u003c\/a\u003e, and their full ranges are on the \u003ca href=\"\/en-ro\/collections\/brand-biolab\"\u003eBioLab\u003c\/a\u003e and \u003ca href=\"\/en-ro\/collections\/brand-thoroughbred-labs\"\u003eThoroughbred Labs\u003c\/a\u003e pages.\u003c\/p\u003e\n\u003cp\u003eChemically, SLU-PP-332 is a non-peptide compound that switches on all three ERR nuclear receptors. Published work covers mice and cultured cells only, it holds no UK licence of any kind, and WADA treats it as prohibited at all times. To check a tub, read its lot number, set it against the report above, and \u003ca href=\"\/en-ro\/pages\/contact\"\u003econtact us\u003c\/a\u003e with that number to ask what BioLab has supplied for it.\u003c\/p\u003e\n\u003ch2\u003eRelated\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003e\u003ca href=\"\/en-ro\/collections\/slu-pp-332\"\u003eAll brands of SLU-PP-332 we stock, compared\u003c\/a\u003e\u003c\/li\u003e\n\u003cli\u003e\u003ca href=\"\/en-ro\/collections\/brand-biolab\"\u003eAll BioLab products\u003c\/a\u003e\u003c\/li\u003e\n\u003cli\u003e\u003ca href=\"\/en-ro\/blogs\/news\/slu-pp-332-and-5-amino-1mq-research-guide\"\u003eSLU-PP-332 and 5-Amino-1MQ: what the mouse data show\u003c\/a\u003e\u003c\/li\u003e\n\u003cli\u003e\u003ca href=\"\/en-ro\/collections\/5-amino-1mq\"\u003e5-Amino-1MQ collection\u003c\/a\u003e\u003c\/li\u003e\n\u003cli\u003e\u003ca href=\"\/en-ro\/pages\/lab-tests\"\u003eBatch testing and certificates of analysis\u003c\/a\u003e\u003c\/li\u003e\n\u003cli\u003e\n\u003ca href=\"\/en-ro\/pages\/shipping\"\u003eDelivery\u003c\/a\u003e and \u003ca href=\"\/en-ro\/pages\/guarantee\"\u003ereturns\u003c\/a\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cem\u003eResearch compounds sold by Free Muscle are supplied for laboratory research use only and are not for human consumption. They are not authorised as medicines by the MHRA, EMA or FDA, are not food supplements, and are sold only to adults aged 18 or over. Nothing on this page is medical or dosing advice. Summaries of published research describe study findings and are not claims about any product.\u003c\/em\u003e\u003c\/p\u003e\n\u003ch2\u003eReferences\u003c\/h2\u003e\n\u003col\u003e\n\u003cli\u003eBillon C, et al. Synthetic ERRalpha\/beta\/gamma Agonist Induces an ERRalpha-Dependent Acute Aerobic Exercise Response and Enhances Exercise Capacity. ACS Chem Biol. 2023;18(4):756-771. \u003ca href=\"https:\/\/pubmed.ncbi.nlm.nih.gov\/36988910\/\" rel=\"noopener\"\u003ePMID: 36988910\u003c\/a\u003e.\u003c\/li\u003e\n\u003cli\u003eBillon C, et al. A Synthetic ERR Agonist Alleviates Metabolic Syndrome. J Pharmacol Exp Ther. 2024;388(2):232-240. \u003ca href=\"https:\/\/pubmed.ncbi.nlm.nih.gov\/37739806\/\" rel=\"noopener\"\u003ePMID: 37739806\u003c\/a\u003e.\u003c\/li\u003e\n\u003cli\u003eBillon C, et al. An orally active estrogen receptor-related receptor agonist, SLU-PP-915, enhances aerobic exercise capacity. J Pharmacol Exp Ther. 2026;393(1):103787. \u003ca href=\"https:\/\/pubmed.ncbi.nlm.nih.gov\/41421047\/\" rel=\"noopener\"\u003ePMID: 41421047\u003c\/a\u003e.\u003c\/li\u003e\n\u003cli\u003eAvliyakulov NK, et al. Analysis and Identification of In Vitro Metabolites of Exercise Mimetic SLU-PP-332 ERRalpha\/beta\/gamma Agonist for Doping-Control Purposes. Drug Test Anal. 2026;18(3):439-450. \u003ca href=\"https:\/\/pubmed.ncbi.nlm.nih.gov\/41688415\/\" rel=\"noopener\"\u003ePMID: 41688415\u003c\/a\u003e.\u003c\/li\u003e\n\u003c\/ol\u003e","brand":"BioLab","offers":[{"title":"Default Title","offer_id":48468978598114,"sku":null,"price":77.99,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0772\/3499\/5426\/files\/metabolic-boost-slu-pp-332-100-mcg-60-caps_521b6688-6369-4210-ab75-0f5dd5218e04.jpg?v=1789931389"},{"product_id":"biolab-metabolic-boost-slu-pp-332-200-mcg-60-caps","title":"BioLab Metabolic Boost (SLU-PP-332) 200 mcg, 60 caps","description":"\u003cp\u003e\u003cstrong\u003eBioLab Metabolic Boost (SLU-PP-332) 200 mcg, 60 caps\u003c\/strong\u003e is a BioLab listing of SLU-PP-332, labelled at 200 mcg (0.2 mg) per capsule, 60 capsules per pack. It is supplied through the \u003ca href=\"\/en-ro\/pages\/muscle-market\"\u003eMuscle Market\u003c\/a\u003e range for laboratory research only, is not for human consumption, and is sold to adults aged 18 and over. Below: what the published research on SLU-PP-332 reports, what the label documents, how batch certificates are handled for BioLab products, and the questions UK buyers most often ask about this compound.\u003c\/p\u003e\n\u003ch2\u003eAbout SLU-PP-332\u003c\/h2\u003e\n\u003cp\u003eSLU-PP-332, also written SLU PP 332, is a synthetic pan-agonist of the oestrogen-related receptors ERR alpha, beta and gamma. These are orphan nuclear receptors, unrelated to the oestrogen receptor despite the name, that regulate mitochondrial biogenesis and oxidative metabolism in muscle and heart. It was characterised as an ERR agonist by Burris, Walker and colleagues at Saint Louis University in work first reported in 2023, and it is behind the exercise-in-a-pill headlines of the last few years.\u003c\/p\u003e\n\u003cp\u003eIn the 2023 ACS Chemical Biology paper, the compound raised mitochondrial function in a muscle cell line, and mice given it showed more type IIa oxidative muscle fibres, an ERR alpha-specific gene programme resembling the acute response to aerobic exercise, and greater treadmill endurance; the authors reported that ERR alpha activation was critical to the endurance effect (Billon et al., 2023). Three of the authors declared shareholdings in a company developing ERR-based therapeutics. A 2024 follow-up in diet-induced obese and ob\/ob mice reported higher energy expenditure and fatty acid oxidation, less fat mass accumulation and improved insulin sensitivity (Billon et al., 2024). There is no human data of any kind, no human pharmacokinetic study, and no safety study in people. It is one of the newest compounds in this market and one of the least characterised. Nothing above is a claim about this product.\u003c\/p\u003e\n\u003cp\u003eChemically it is a small molecule, not a peptide. PubChem (CID 5338394) lists it under CAS number 303760-60-3 with the formula C18H14N2O2 and a molecular weight of 290.3. Its systematic name, 4-hydroxy-N-[(E)-naphthalen-2-ylmethylideneamino]benzamide, describes a naphthalene ring joined to a 4-hydroxybenzoyl group through an acylhydrazone link. Those identifiers are what a certificate of analysis should match.\u003c\/p\u003e\n\u003ch2\u003eThis listing\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003eBrand: \u003ca href=\"\/en-ro\/collections\/brand-biolab\"\u003eBioLab\u003c\/a\u003e\n\u003c\/li\u003e\n\u003cli\u003eCompound: SLU-PP-332\u003c\/li\u003e\n\u003cli\u003eForm: Capsules\u003c\/li\u003e\n\u003cli\u003ePack size: 60 capsules\u003c\/li\u003e\n\u003cli\u003eStrength: 200 mcg (0.2 mg) per capsule, as printed on the BioLab label\u003c\/li\u003e\n\u003cli\u003eTotal in pack: 12 mg (200 mcg x 60 capsules)\u003c\/li\u003e\n\u003cli\u003eBatch certificate of analysis: shown where BioLab supplies one for the batch we hold\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eBioLab also lists the same compound at \u003ca href=\"\/en-ro\/products\/biolab-metabolic-boost-slu-pp-332-100-mcg-60-caps\"\u003e100 mcg\u003c\/a\u003e and \u003ca href=\"\/en-ro\/products\/biolab-metabolic-boost-slu-pp-332-500-mcg-60-caps\"\u003e500 mcg\u003c\/a\u003e per capsule, giving 6 mg and 30 mg per 60-capsule pack. The 200 mcg pack sits between them. For researchers comparing listings on content, the useful figure is total milligrams per pack against cost, explained in our \u003ca href=\"\/en-ro\/blogs\/news\/price-per-mg-compare-sarms-peptides\"\u003eprice per milligram guide\u003c\/a\u003e.\u003c\/p\u003e\n\u003ch2\u003eSLU-PP-332 in the UK: buying, legal status and what to check\u003c\/h2\u003e\n\u003cp\u003eSearches such as \"SLU PP 332 UK buy\", \"SLU PP 332 UK source\" and \"SLU-PP-332 UK\" usually hide two questions: may it be sold here at all, and how can a buyer tell a credible listing from a guess. On the first, the position is short. SLU-PP-332 is not a licensed medicine in the UK and has not been assessed by the MHRA. It is not an authorised food supplement, and it is not a controlled drug. That leaves one lawful basis for a UK shop, which is sale to adults for laboratory research, with no suggestion that anyone should swallow it. It is not for human consumption. In sport, SLU-PP-332 is not named on the WADA Prohibited List but, as a substance with no current approval for human therapeutic use, it falls under section S0 (non-approved substances) and is prohibited at all times. Anyone subject to anti-doping rules should consult the current list.\u003c\/p\u003e\n\u003cp\u003eOn the second question, the compound's youth is the problem. It entered the pharmacology literature in 2023, reference standards are scarce, and no pharmacopoeia monograph exists, so a label on its own proves little. A listing worth trusting gives the reader enough to check it independently. The table sets out what that means and how this page measures up.\u003c\/p\u003e\n\u003ctable\u003e\n\u003cthead\u003e\u003ctr\u003e\n\u003cth\u003eCheck\u003c\/th\u003e\n\u003cth\u003eWhat it tells a researcher\u003c\/th\u003e\n\u003cth\u003eThis BioLab listing\u003c\/th\u003e\n\u003c\/tr\u003e\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003eStated strength per capsule\u003c\/td\u003e\n\u003ctd\u003eAllows total content and cost per milligram to be worked out\u003c\/td\u003e\n\u003ctd\u003e200 mcg per capsule, 12 mg per pack, as printed by BioLab\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eChemical identifiers\u003c\/td\u003e\n\u003ctd\u003eLets a certificate be matched to the right molecule\u003c\/td\u003e\n\u003ctd\u003eCAS 303760-60-3, C18H14N2O2, MW 290.3 (PubChem)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eCertificate for the batch held\u003c\/td\u003e\n\u003ctd\u003eLinks an analysis to the stock actually shipped\u003c\/td\u003e\n\u003ctd\u003eShown only where BioLab supplies one for that batch\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eNamed UK seller\u003c\/td\u003e\n\u003ctd\u003eGives a contact, an age check and a returns route\u003c\/td\u003e\n\u003ctd\u003eFreeMuscle, registered in Andorra, dispatching from Scunthorpe; 18+ only; 30-day returns on unopened items\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eDelivery terms\u003c\/td\u003e\n\u003ctd\u003eShows the parcel can be traced and is discreet\u003c\/td\u003e\n\u003ctd\u003eFree tracked UK delivery, plain packaging; EU delivery 3-7 working days\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eNo consumption guidance\u003c\/td\u003e\n\u003ctd\u003eA research listing that gives instructions for use contradicts itself\u003c\/td\u003e\n\u003ctd\u003eNone given\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003cp\u003eOrders placed before 2pm Monday to Friday are processed the same working day. Full terms are on the \u003ca href=\"\/en-ro\/pages\/shipping\"\u003eshipping\u003c\/a\u003e and \u003ca href=\"\/en-ro\/pages\/guarantee\"\u003eguarantee\u003c\/a\u003e pages. The \u003ca href=\"\/en-ro\/blogs\/news\/how-to-choose-a-sarms-supplier-uk-checklist\"\u003eUK supplier checklist\u003c\/a\u003e applies the same tests to any shop, and the \u003ca href=\"\/en-ro\/blogs\/news\/what-are-sarms-the-2026-research-guide\"\u003eresearch guide\u003c\/a\u003e covers the wider legal picture for compounds sold on this basis.\u003c\/p\u003e\n\u003ch2\u003eReading the certificate of analysis for this product\u003c\/h2\u003e\n\u003cp\u003eBioLab is a third-party brand in the Muscle Market range, so the testing position differs from our own label. Every Free Muscle-brand batch is assayed by Janoshik Analytical, an independent laboratory, with the certificate sent on request by email. For BioLab products we show a certificate of analysis only where BioLab supplies one for the specific batch we hold. A generic PDF with no batch number is not a batch certificate, and we do not present one as such. You can contact us with the product name to ask what is held for the current batch. Where a BioLab certificate exists, these are the fields to read.\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eIdentity\u003c\/strong\u003e: the method used to confirm the molecule. HPLC alone matches a retention time against a reference sample; LC-MS adds a mass. With a molecular weight of 290.3, SLU-PP-332 would be expected to appear as a protonated ion close to m\/z 291.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePurity\u003c\/strong\u003e: the share of the detected material that is SLU-PP-332, usually from HPLC peak areas. It says nothing about how much is in each capsule.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eContent\u003c\/strong\u003e: the measured amount per capsule. At a label figure of 200 mcg, this is a very small quantity to find inside a capsule fill, so a content result is the field that tests the label most directly.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eBatch number\u003c\/strong\u003e: must be identical to the number on the pack.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eTest date and laboratory\u003c\/strong\u003e: tie the result to a time and to an accountable tester.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eIf a field is missing, read the gap literally. A certificate with purity but no content confirms the molecule and leaves the 200 mcg figure unverified. A certificate with no batch number describes some material, not necessarily this stock. If BioLab has supplied nothing for the current batch, this listing makes no analytical claim beyond the BioLab label. Our \u003ca href=\"\/en-ro\/pages\/lab-tests\"\u003elab tests page\u003c\/a\u003e and the guide on \u003ca href=\"\/en-ro\/blogs\/news\/how-to-read-a-certificate-of-analysis\"\u003ehow to read a certificate of analysis\u003c\/a\u003e go further, and you can \u003ca href=\"\/en-ro\/pages\/contact\"\u003econtact us\u003c\/a\u003e about any mismatch.\u003c\/p\u003e\n\u003ch2\u003eCapsules compared with other forms\u003c\/h2\u003e\n\u003cp\u003eQueries for \"SLU-PP-332 capsules\" and \"SLU-PP-332 injectable\" reflect the fact that the compound is offered in several formats. The formats differ in how the amount per unit is fixed and in how closely they resemble the published research, not in the molecule itself.\u003c\/p\u003e\n\u003cp\u003eThe published mouse studies were not studies of capsules, and oral exposure in people has never been measured, so oral absorption of this molecule in humans is an open question. Because SLU-PP-332 is a small molecule rather than a peptide, the argument that stomach enzymes break peptides down does not apply to it in the same way, though acid may be relevant to its acylhydrazone link, as the storage section explains.\u003c\/p\u003e\n\u003cp\u003eUniformity is the other practical difference. A capsule holds a weighed powder fill, and at 200 mcg the active ingredient must be spread through a much larger mass of filler; uneven blending is the main risk, and only a content assay on the batch can show whether it happened. A liquid is measured by volume and depends on the compound staying dissolved and intact in its solvent. Loose powder puts all the weighing on the researcher. None of these differences is a claim about effect.\u003c\/p\u003e\n\u003ch2\u003eSLU-PP-332 compared with Cardarine (GW501516)\u003c\/h2\u003e\n\u003cp\u003eThe comparison most searched alongside SLU-PP-332 is with other so-called exercise mimetics, and the one stocked here is \u003ca href=\"\/en-ro\/collections\/cardarine\"\u003eCardarine (GW501516)\u003c\/a\u003e. Both are small molecules that act on nuclear receptors controlling oxidative metabolism in muscle, and both became known through mouse treadmill experiments. There the resemblance largely ends.\u003c\/p\u003e\n\u003cp\u003eCardarine is an agonist of PPAR delta, a different receptor from the ERR family. In a 2008 Cell study, a PPAR delta agonist combined with training increased oxidative muscle fibres and running endurance in mice, while an AMPK activator, AICAR, raised endurance in sedentary mice after four weeks (Narkar et al., 2008). That paper made \"exercise mimetic\" a research term, and SLU-PP-332 was later studied as a route to a similar gene programme through ERR instead. Development history also separates them. GW501516 was a pharmaceutical drug candidate that reached early human studies before development stopped after cancers were found in long-term rodent studies, a history covered in our article on \u003ca href=\"\/en-ro\/blogs\/news\/cardarine-gw-501516-what-happened-in-development\"\u003ewhat happened in Cardarine's development\u003c\/a\u003e. SLU-PP-332 has never entered a human study.\u003c\/p\u003e\n\u003ctable\u003e\n\u003cthead\u003e\u003ctr\u003e\n\u003cth\u003ePoint of comparison\u003c\/th\u003e\n\u003cth\u003eSLU-PP-332\u003c\/th\u003e\n\u003cth\u003eCardarine (GW501516)\u003c\/th\u003e\n\u003c\/tr\u003e\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003eTarget\u003c\/td\u003e\n\u003ctd\u003eERR alpha, beta and gamma (agonist)\u003c\/td\u003e\n\u003ctd\u003ePPAR delta (agonist)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eResearch origin\u003c\/td\u003e\n\u003ctd\u003eReported as an ERR agonist in 2023, academic laboratory\u003c\/td\u003e\n\u003ctd\u003ePharmaceutical drug candidate from around 2001\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eHuman data\u003c\/td\u003e\n\u003ctd\u003eNone\u003c\/td\u003e\n\u003ctd\u003eEarly-phase studies only, development ended\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMain known concern\u003c\/td\u003e\n\u003ctd\u003eSafety simply uncharacterised\u003c\/td\u003e\n\u003ctd\u003eTumours in long-term rodent studies\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eWADA position\u003c\/td\u003e\n\u003ctd\u003eNot named; S0 non-approved substance\u003c\/td\u003e\n\u003ctd\u003eNamed under S4 metabolic modulators\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eUK status\u003c\/td\u003e\n\u003ctd\u003eUnlicensed; research use only\u003c\/td\u003e\n\u003ctd\u003eUnlicensed; research use only\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003cp\u003eNeither compound is licensed for any use in people. The comparison is pharmacological and regulatory only, and nothing here suggests using either one, alone or with anything else.\u003c\/p\u003e\n\u003ch2\u003eDetection, sport and testing\u003c\/h2\u003e\n\u003cp\u003eFor athletes, the relevant point is that SLU-PP-332 is prohibited at all times under section S0 of the WADA list even though it is not named, because it has no approval for human therapeutic use. Anti-doping laboratories have already begun preparing for it. A doping-control group at the German Sport University Cologne characterised SLU-PP-332 and SLU-PP-915 by liquid chromatography with high-resolution tandem mass spectrometry and incubated both with human liver preparations; for SLU-PP-332 they identified nine metabolites, six Phase I products and three Phase II conjugates, and described the work as a basis for uncovering misuse (Möller et al., 2026).\u003c\/p\u003e\n\u003cp\u003eThat study was carried out in vitro. No excretion study in people has been published, so there is no established detection window for SLU-PP-332 in urine or blood, and any figure quoted for how long it remains detectable is unsupported. The accurate summary is that it is detectable in principle, that laboratories have the target metabolites to look for, and that the window has not been established. Anyone bound by an anti-doping code should treat it as prohibited and check the current list, which is updated every year.\u003c\/p\u003e\n\u003ch2\u003eStorage, stability and handling\u003c\/h2\u003e\n\u003cp\u003eNeither BioLab nor anyone else has published stability data for SLU-PP-332 capsules, so storage advice rests on the structure of the molecule and on laboratory practice. The acylhydrazone link at the centre of SLU-PP-332 is the part chemists watch: hydrazone bonds can be cleaved by water under acidic conditions, and the carbon-nitrogen double bond can switch between E and Z forms when exposed to light. Heat speeds both processes. Keeping the capsules dry, dark and cool therefore protects the compound itself as well as the capsule shell.\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eKeep the pack sealed in its original container, with any desiccant left in place.\u003c\/li\u003e\n\u003cli\u003eStore at room temperature or below, away from heat sources and direct sunlight.\u003c\/li\u003e\n\u003cli\u003eAvoid bathrooms, kitchens and other humid places, and close the lid promptly after opening.\u003c\/li\u003e\n\u003cli\u003eDo not transfer capsules to unlabelled containers; the batch number on the pack is what links it to any certificate.\u003c\/li\u003e\n\u003cli\u003eKeep out of reach of children and away from food.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eDiscard capsules that have clumped, softened or changed colour, and follow normal laboratory rules on labelling, gloves and disposal.\u003c\/p\u003e\n\u003ch2\u003eGlossary\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eERR (oestrogen-related receptor)\u003c\/strong\u003e: one of three orphan nuclear receptors, alpha, beta and gamma, that control genes for mitochondrial energy production. They do not bind oestrogen.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePan-agonist\u003c\/strong\u003e: a compound that activates every member of a receptor family rather than one.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eOrphan nuclear receptor\u003c\/strong\u003e: a receptor for which no hormone produced by the body has been confirmed as its ligand.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eExercise mimetic\u003c\/strong\u003e: a research term for a compound that triggers some of the molecular changes seen after exercise, used of animal and cell findings.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMitochondrial biogenesis\u003c\/strong\u003e: the formation of new mitochondria inside cells.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePPAR delta\u003c\/strong\u003e: a separate nuclear receptor, the target of Cardarine (GW501516).\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eAcylhydrazone\u003c\/strong\u003e: the chemical link joining the two ring systems of SLU-PP-332, sensitive to acid and moisture.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eHPLC\u003c\/strong\u003e: high-performance liquid chromatography, the usual method for purity figures.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eLC-MS\u003c\/strong\u003e: liquid chromatography with mass spectrometry, which confirms identity by molecular mass.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMetabolite\u003c\/strong\u003e: a product the body forms from a compound; anti-doping tests often target metabolites.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSection S0\u003c\/strong\u003e: the WADA category for substances with no current approval for human therapeutic use.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCertificate of analysis (COA)\u003c\/strong\u003e: a laboratory report of identity, purity and content for a named batch.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2\u003eAbout BioLab Metabolic Boost 200 mcg\u003c\/h2\u003e\n\u003cp\u003eBioLab sells its SLU-PP-332 capsules as Metabolic Boost, a trade name for the product rather than a statement about any effect. This tub is the middle strength of three: 200 mcg per capsule and 60 capsules, 12 mg in total, between the \u003ca href=\"\/en-ro\/products\/biolab-metabolic-boost-slu-pp-332-100-mcg-60-caps\"\u003e100 mcg tub\u003c\/a\u003e at 6 mg and the \u003ca href=\"\/en-ro\/products\/biolab-metabolic-boost-slu-pp-332-500-mcg-60-caps\"\u003e500 mcg tub\u003c\/a\u003e at 30 mg. The three share one design, a purple-blue tub with orange trim, the tiger emblem and SLU-PP-332 beneath the product name, so the 200 MCG\/CAPS tag and the 200 mcg starburst are what identify this strength.\u003c\/p\u003e\n\u003cp\u003eWho makes it is not stated. By BioLab's own account it distributes its research-only preparations rather than producing them, and it marks them as not for consumption. A fourth SLU-PP-332 product that BioLab sells in 30-capsule tubs under another name is not stocked here.\u003c\/p\u003e\n\u003ch3\u003eLab reports for this strength\u003c\/h3\u003e\n\u003cp\u003eNo BioLab report is attached to this listing at present. The one Metabolic Boost report we hold was run on a 100 mcg sample in October 2024 and does not describe a 200 mcg fill. BioLab states that each product's current report is posted in its gallery and Tests tab on the brand's shop and can be requested. A report that tests this label would give the measured content per capsule against 200 mcg, the date and the lot number; \u003ca href=\"\/en-ro\/pages\/contact\"\u003econtact us\u003c\/a\u003e with the lot on your tub to ask what is held for it.\u003c\/p\u003e\n\u003cp\u003eAmong other brands, \u003ca href=\"\/en-ro\/products\/thoroughbred-labs-slu\"\u003eThoroughbred Labs SLU-PP-332\u003c\/a\u003e is labelled at 250 mcg per capsule in a 60-capsule tub (15 mg), a little above this one; the two sit together in the \u003ca href=\"\/en-ro\/collections\/slu-pp-332\"\u003eSLU-PP-332 collection\u003c\/a\u003e, and each brand's range is on its own page, \u003ca href=\"\/en-ro\/collections\/brand-biolab\"\u003eBioLab\u003c\/a\u003e or \u003ca href=\"\/en-ro\/collections\/brand-thoroughbred-labs\"\u003eThoroughbred Labs\u003c\/a\u003e. The compound is an experimental ERR agonist developed at Saint Louis University, studied only in mice and cells, unlicensed in the UK and, for anyone subject to anti-doping rules, prohibited by WADA in and out of competition.\u003c\/p\u003e\n\u003ch2\u003eRelated\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003e\u003ca href=\"\/en-ro\/collections\/slu-pp-332\"\u003eAll brands of SLU-PP-332 we stock, compared\u003c\/a\u003e\u003c\/li\u003e\n\u003cli\u003e\u003ca href=\"\/en-ro\/collections\/brand-biolab\"\u003eAll BioLab products\u003c\/a\u003e\u003c\/li\u003e\n\u003cli\u003e\u003ca href=\"\/en-ro\/blogs\/news\/slu-pp-332-and-5-amino-1mq-research-guide\"\u003eSLU-PP-332 and 5-Amino-1MQ research guide\u003c\/a\u003e\u003c\/li\u003e\n\u003cli\u003e\n\u003ca href=\"\/en-ro\/collections\/cardarine\"\u003eCardarine (GW501516)\u003c\/a\u003e and \u003ca href=\"\/en-ro\/collections\/5-amino-1mq\"\u003e5-Amino-1MQ\u003c\/a\u003e\n\u003c\/li\u003e\n\u003cli\u003e\u003ca href=\"\/en-ro\/pages\/lab-tests\"\u003eBatch testing and certificates of analysis\u003c\/a\u003e\u003c\/li\u003e\n\u003cli\u003e\n\u003ca href=\"\/en-ro\/pages\/shipping\"\u003eDelivery\u003c\/a\u003e and \u003ca href=\"\/en-ro\/pages\/guarantee\"\u003ereturns\u003c\/a\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cem\u003eResearch compounds sold by Free Muscle are supplied for laboratory research use only and are not for human consumption. They are not authorised as medicines by the MHRA, EMA or FDA, are not food supplements, and are sold only to adults aged 18 or over. Nothing on this page is medical or dosing advice. Summaries of published research describe study findings and are not claims about any product.\u003c\/em\u003e\u003c\/p\u003e\n\u003ch2\u003eReferences\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003eBillon C, et al. Synthetic ERRalpha\/beta\/gamma Agonist Induces an ERRalpha-Dependent Acute Aerobic Exercise Response and Enhances Exercise Capacity. ACS Chem Biol. 2023;18(4):756-771. \u003ca href=\"https:\/\/pubmed.ncbi.nlm.nih.gov\/36988910\/\" rel=\"noopener\"\u003ePMID: 36988910\u003c\/a\u003e.\u003c\/li\u003e\n\u003cli\u003eBillon C, et al. A Synthetic ERR Agonist Alleviates Metabolic Syndrome. J Pharmacol Exp Ther. 2024;388(2):232-240. \u003ca href=\"https:\/\/pubmed.ncbi.nlm.nih.gov\/37739806\/\" rel=\"noopener\"\u003ePMID: 37739806\u003c\/a\u003e.\u003c\/li\u003e\n\u003cli\u003eMöller T, et al. In Vitro Metabolism and Analytical Characterization of SLU-PP-332 and SLU-PP-915: Novel Pan-ERR Agonists With Doping Potential. Rapid Commun Mass Spectrom. 2026;40(8):e70039. \u003ca href=\"https:\/\/pubmed.ncbi.nlm.nih.gov\/41588687\/\" rel=\"noopener\"\u003ePMID: 41588687\u003c\/a\u003e.\u003c\/li\u003e\n\u003cli\u003eNarkar VA, et al. AMPK and PPARdelta agonists are exercise mimetics. Cell. 2008;134(3):405-415. \u003ca href=\"https:\/\/pubmed.ncbi.nlm.nih.gov\/18674809\/\" rel=\"noopener\"\u003ePMID: 18674809\u003c\/a\u003e.\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"BioLab","offers":[{"title":"Default Title","offer_id":48468978761954,"sku":null,"price":145.99,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0772\/3499\/5426\/files\/metabolic-boost-slu-pp-332-200-mcg-60-caps_1a9b364b-93a7-4d08-b164-0b9fff7ee2cb.jpg?v=1789931391"},{"product_id":"biolab-metabolic-boost-slu-pp-332-500-mcg-60-caps","title":"BioLab Metabolic Boost (SLU-PP-332) 500 mcg, 60 caps","description":"\u003cp\u003e\u003cstrong\u003eBioLab Metabolic Boost (SLU-PP-332) 500 mcg, 60 caps\u003c\/strong\u003e is a BioLab listing of SLU-PP-332, labelled at 500 mcg (0.5 mg) per capsule, 60 capsules per pack. It is supplied through the \u003ca href=\"\/en-ro\/pages\/muscle-market\"\u003eMuscle Market\u003c\/a\u003e range for laboratory research only, is not for human consumption, and is sold to adults aged 18 and over. Below: what the published research on SLU-PP-332 reports, what the label documents, how batch certificates are handled for BioLab products, and how the compound differs from 5-Amino-1MQ.\u003c\/p\u003e\n\u003ch2\u003eAbout SLU-PP-332\u003c\/h2\u003e\n\u003cp\u003eSLU-PP-332, also written SLU PP 332, is a synthetic pan-agonist of the oestrogen-related receptors ERR alpha, beta and gamma. These are orphan nuclear receptors, unrelated to the oestrogen receptor despite the name, that regulate mitochondrial biogenesis and oxidative metabolism in muscle and heart. The compound was developed by Burris, Walker and colleagues at Saint Louis University and first published in 2023.\u003c\/p\u003e\n\u003cp\u003eIn the 2023 ACS Chemical Biology paper, mice given SLU-PP-332 showed a pattern of gene expression in muscle resembling the acute response to aerobic exercise and showed more oxidative type IIa muscle fibres and greater exercise endurance; the authors reported that ERR alpha activation was critical for the endurance effect (Billon et al., 2023). A 2024 follow-up in diet-induced obese mice and in ob\/ob mice reported increased energy expenditure and fatty acid oxidation, less fat mass accumulation and improved insulin sensitivity (Billon et al., 2024). The authors of both papers include stockholders in a company focused on ERR-based therapeutics. There is no human data of any kind, no human pharmacokinetic study, and no safety study in people. Nothing above is a claim about this product.\u003c\/p\u003e\n\u003cp\u003eIn structural terms SLU-PP-332 is a compact aromatic molecule rather than a peptide or a steroid. PubChem records it as CID 5338394, CAS 303760-60-3, with the formula C18H14N2O2 and a molecular weight of 290.3 g\/mol; its IUPAC name is 4-hydroxy-N-[(E)-naphthalen-2-ylmethylideneamino]benzamide. These are the identifiers any analytical report on this product should agree with.\u003c\/p\u003e\n\u003ch2\u003eThis listing\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003eBrand: \u003ca href=\"\/en-ro\/collections\/brand-biolab\"\u003eBioLab\u003c\/a\u003e\n\u003c\/li\u003e\n\u003cli\u003eCompound: SLU-PP-332\u003c\/li\u003e\n\u003cli\u003eForm: Capsules\u003c\/li\u003e\n\u003cli\u003ePack size: 60 capsules\u003c\/li\u003e\n\u003cli\u003eStrength: 500 mcg (0.5 mg) per capsule, as printed on the BioLab label\u003c\/li\u003e\n\u003cli\u003eTotal in pack: 30 mg (500 mcg x 60 capsules)\u003c\/li\u003e\n\u003cli\u003eBatch certificate of analysis: shown where BioLab supplies one for the batch we hold\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eThis is the highest per-capsule figure BioLab lists for SLU-PP-332. The same 60-capsule format is also sold at \u003ca href=\"\/en-ro\/products\/biolab-metabolic-boost-slu-pp-332-100-mcg-60-caps\"\u003e100 mcg\u003c\/a\u003e (6 mg per pack) and \u003ca href=\"\/en-ro\/products\/biolab-metabolic-boost-slu-pp-332-200-mcg-60-caps\"\u003e200 mcg\u003c\/a\u003e (12 mg per pack), so this pack holds five times the labelled content of the smallest one. \u003ca href=\"\/en-ro\/products\/thoroughbred-labs-slu\"\u003eThoroughbred Labs SLU-PP-332\u003c\/a\u003e is a separate 60-capsule listing whose label states 250 mcg per capsule, 15 mg per pack, half the per-capsule figure of this tub. When comparing listings, divide cost by total milligrams, as set out in our \u003ca href=\"\/en-ro\/blogs\/news\/price-per-mg-compare-sarms-peptides\"\u003eprice per milligram guide\u003c\/a\u003e.\u003c\/p\u003e\n\u003ch2\u003eSLU-PP-332 in the UK: buying, legal status and what to check\u003c\/h2\u003e\n\u003cp\u003eSearch terms like \"SLU PP 332 UK buy\", \"SLU PP 332 UK sale\" and \"SLU PP 332 UK source\" suggest many people assume the compound is an ordinary retail product. It is not, and the legal framework explains why.\u003c\/p\u003e\n\u003ch3\u003eWhere the law stands\u003c\/h3\u003e\n\u003cp\u003eNo regulator anywhere has licensed SLU-PP-332. In the UK it is not a licensed medicine, it has never been assessed by the MHRA, and it is not an authorised food supplement or novel food, so it cannot lawfully be marketed as something to swallow. It is not a controlled drug either. The route left open is supply for laboratory research to adults, and that is the only basis on which this listing exists: 18+ only, and not for human consumption. A marketplace page describing it as a supplement, or a \"compounding\" service offering it as a treatment, is presenting it as something no authority has approved. In sport, SLU-PP-332 is prohibited at all times: as a substance with no current approval for human therapeutic use it is caught by section S0 (non-approved substances) of the WADA Prohibited List, whether or not the list names it.\u003c\/p\u003e\n\u003ch3\u003eQuestions worth putting to any UK seller\u003c\/h3\u003e\n\u003col\u003e\n\u003cli\u003e\n\u003cstrong\u003eWhose product is it?\u003c\/strong\u003e A named brand can be held to its label. Here the brand is BioLab, which describes itself as the distributor of its research preparations.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWhat is the stated content, in which unit?\u003c\/strong\u003e Micrograms and milligrams differ by a factor of a thousand. This pack states 500 mcg per capsule and 60 capsules, 30 mg in total.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eIs there a certificate for the batch actually in stock?\u003c\/strong\u003e For BioLab we show one only where BioLab has supplied it for the batch we hold, and say so where it has not.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eIs the seller identifiable?\u003c\/strong\u003e FreeMuscle is registered in Andorra, has its UK operations and dispatch in Scunthorpe, sells only to adults, and accepts returns of unopened items within 30 days.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eHow does it travel?\u003c\/strong\u003e Every UK order ships free by tracked delivery in plain packaging; orders placed before 2pm Monday to Friday are processed the same working day, and EU delivery takes 3-7 working days.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eDoes the listing tell you how to use it?\u003c\/strong\u003e A research listing should not, and this one does not.\u003c\/li\u003e\n\u003c\/ol\u003e\n\u003cp\u003eReviews that describe personal outcomes cannot confirm what a capsule contained, so we do not publish them. Terms are on our \u003ca href=\"\/en-ro\/pages\/shipping\"\u003eshipping\u003c\/a\u003e and \u003ca href=\"\/en-ro\/pages\/guarantee\"\u003eguarantee\u003c\/a\u003e pages, and the \u003ca href=\"\/en-ro\/blogs\/news\/how-to-choose-a-sarms-supplier-uk-checklist\"\u003eUK supplier checklist\u003c\/a\u003e applies the same tests to any shop.\u003c\/p\u003e\n\u003ch2\u003eCapsules compared with other forms\u003c\/h2\u003e\n\u003cp\u003eSLU-PP-332 is offered as capsules, as liquids and as vials marketed for injection, which is why \"SLU-PP-332 capsules\" and \"SLU-PP-332 injectable\" are both frequent searches. The literature answers part of that question directly. None of the published animal studies tested a capsule. In a 2026 paper introducing a successor molecule, SLU-PP-915, the same research group stated that SLU-PP-332 improves aerobic performance in mice but lacks oral bioavailability, and presented oral activity as the reason for developing the new compound (Billon et al., 2026). The authors disclose that one of them is an inventor on the university's rights and holds shares in companies developing ERR agonists. No study has measured SLU-PP-332 exposure after oral intake in any species, so this page makes no claim about what a capsule does.\u003c\/p\u003e\n\u003cp\u003eBecause SLU-PP-332 is a small molecule, the usual explanation for poor oral uptake of peptides, digestion by stomach and gut enzymes, does not describe its problem; the abstract does not give a cause. Our article \u003ca href=\"\/en-ro\/blogs\/news\/do-oral-peptides-work\"\u003edo oral peptides work\u003c\/a\u003e covers the separate peptide case.\u003c\/p\u003e\n\u003cp\u003eThe practical differences between forms are about measurement and stability. A capsule fixes the amount at the filling stage: at 500 mcg the active is still well under a milligram per capsule, so its accuracy depends on how evenly the powder blend was mixed before filling. A liquid moves that uncertainty to the solvent and the measuring device, and keeps the acylhydrazone link in contact with water for its whole shelf life. Only a batch content assay can show whether either format matches its label.\u003c\/p\u003e\n\u003ch2\u003eSLU-PP-332 compared with 5-Amino-1MQ\u003c\/h2\u003e\n\u003cp\u003e\u003ca href=\"\/en-ro\/collections\/5-amino-1mq\"\u003e5-Amino-1MQ\u003c\/a\u003e is often discussed alongside SLU-PP-332, and our research guide covers the two together, because both are small molecules studied in obese mice and both are sold under metabolic headings. Their mechanisms are unrelated. SLU-PP-332 switches on transcription factors, the ERR receptors, that drive genes for mitochondrial energy production. 5-Amino-1MQ (5-amino-1-methylquinolinium) works on an enzyme instead: it inhibits nicotinamide N-methyltransferase (NNMT), which methylates nicotinamide and in doing so draws on the cell's pools of NAD+ and the methyl donor SAM.\u003c\/p\u003e\n\u003cp\u003eThe key 5-Amino-1MQ paper came from the University of Texas Medical Branch. Methylquinolinium inhibitors of NNMT, the chemical series to which 5-Amino-1MQ belongs, were selective against related methyltransferases, lowered the NNMT product 1-methylnicotinamide, raised intracellular NAD+ and SAM, and suppressed fat formation in cultured fat cells. In diet-induced obese mice, a potent inhibitor from the series given systemically reduced body weight, white fat mass and plasma cholesterol without a change in food intake, and the authors saw no observable adverse effects (Neelakantan et al., 2018). That was a short study in mice, not a toxicology programme, and no human trial has been published for either compound.\u003c\/p\u003e\n\u003ctable\u003e\n\u003cthead\u003e\u003ctr\u003e\n\u003cth\u003eFeature\u003c\/th\u003e\n\u003cth\u003eSLU-PP-332\u003c\/th\u003e\n\u003cth\u003e5-Amino-1MQ\u003c\/th\u003e\n\u003c\/tr\u003e\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003eTarget type\u003c\/td\u003e\n\u003ctd\u003eNuclear receptors (ERR alpha, beta, gamma)\u003c\/td\u003e\n\u003ctd\u003eEnzyme (NNMT)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eAction\u003c\/td\u003e\n\u003ctd\u003eAgonist\u003c\/td\u003e\n\u003ctd\u003eInhibitor\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003ePubChem CID and formula\u003c\/td\u003e\n\u003ctd\u003e5338394, C18H14N2O2 (neutral)\u003c\/td\u003e\n\u003ctd\u003e950107, C10H11N2+ (a cation)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMolecular weight\u003c\/td\u003e\n\u003ctd\u003e290.3 g\/mol\u003c\/td\u003e\n\u003ctd\u003e159.2 g\/mol\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eEvidence base\u003c\/td\u003e\n\u003ctd\u003eMouse and cell studies from 2023 onwards\u003c\/td\u003e\n\u003ctd\u003eCell and mouse studies from 2018 onwards\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eLicensed anywhere\u003c\/td\u003e\n\u003ctd\u003eNo\u003c\/td\u003e\n\u003ctd\u003eNo\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eWADA position\u003c\/td\u003e\n\u003ctd\u003eProhibited at all times (at least under S0, non-approved substances)\u003c\/td\u003e\n\u003ctd\u003eProhibited at all times (at least under S0, non-approved substances)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003cp\u003eBeing charged, 5-Amino-1MQ behaves differently in analysis and in solution from the neutral SLU-PP-332, which is one reason their certificates are not interchangeable. The comparison is chemical and regulatory only. It says nothing about using either compound, singly or alongside any other.\u003c\/p\u003e\n\u003ch2\u003eReading the certificate of analysis for this product\u003c\/h2\u003e\n\u003cp\u003eBioLab is a third-party brand in the Muscle Market range, so the testing position differs from our own label. Every Free Muscle-brand batch is assayed by Janoshik Analytical, an independent laboratory, with the certificate sent on request by email. For BioLab products we show a certificate of analysis only where BioLab supplies one for the specific batch we hold. A generic PDF with no batch number is not a batch certificate, and we do not present one as such. Email us with the product name and we will send what we hold, or say plainly that there is none.\u003c\/p\u003e\n\u003cp\u003eNo BioLab certificate is attached to this 500 mcg listing yet. When one is supplied for this pack, read it against the following:\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eIdentity method.\u003c\/strong\u003e HPLC compares a retention time with a reference standard, which is only as good as that standard; for a compound this new, reference material is scarce. LC-MS adds a measured mass, and for SLU-PP-332 the protonated molecule should appear near m\/z 291.1.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePurity percentage.\u003c\/strong\u003e The proportion of the detected signal attributable to SLU-PP-332. A capsule mostly made of filler can still show high purity, because purity describes the active fraction, not its amount.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eContent per capsule.\u003c\/strong\u003e The result that tests the 500 mcg on the label.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eBatch number.\u003c\/strong\u003e Compare it with the code on the bottle; any difference, even one digit, means the report covers other stock.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eDate and laboratory.\u003c\/strong\u003e A named laboratory and test date place the result in time; a certificate years older than the pack describes earlier stock.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eWhat a gap means is fairly literal. With no content figure, the 500 mcg claim rests on BioLab's label alone. With no batch number, the report cannot be linked to this stock. With no certificate at all, this listing makes no analytical claim beyond what BioLab prints. See our \u003ca href=\"\/en-ro\/pages\/lab-tests\"\u003elab tests page\u003c\/a\u003e, the guide on \u003ca href=\"\/en-ro\/blogs\/news\/how-to-read-a-certificate-of-analysis\"\u003ehow to read a certificate of analysis\u003c\/a\u003e, or \u003ca href=\"\/en-ro\/pages\/contact\"\u003econtact us\u003c\/a\u003e about a specific batch.\u003c\/p\u003e\n\u003ch2\u003eDetection, sport and testing\u003c\/h2\u003e\n\u003cp\u003eUnder the WADA Code, SLU-PP-332 is caught by section S0, which covers any pharmacological substance without current approval for human therapeutic use, so it is prohibited in and out of competition whether or not the list names it. Anti-doping laboratories have already published in vitro work on its metabolism: the UCLA Olympic Analytical Laboratory incubated SLU-PP-332 with pooled human liver S9 fractions and, using high-resolution LC-MS, identified 22 metabolites, including hydroxylated, glucuronidated and sulfated forms, several of them proposed as targets for doping control (Avliyakulov et al., 2026). The authors note that further work is needed to confirm the structures.\u003c\/p\u003e\n\u003cp\u003eWhat has not been published is an excretion study in people, so there is no validated detection window in urine or blood. Any number of days quoted online is unsupported. The accurate position is that the compound is detectable in principle and the window has not been established. Competitors in tested sport, including events run under UK Anti-Doping rules, should treat it as prohibited and check the current list, which changes every January.\u003c\/p\u003e\n\u003ch2\u003eStorage, stability and handling\u003c\/h2\u003e\n\u003cp\u003eBioLab has published no stability study for these capsules, so the sensible approach follows from the chemistry. The weak point of SLU-PP-332 is the acylhydrazone bridge between its two ring systems. Moisture, particularly with any acidity, can split that bond back into its starting fragments, and light can convert the E arrangement of the carbon-nitrogen double bond into the Z form, a different shape. Warmth accelerates both.\u003c\/p\u003e\n\u003cp\u003eIn practice that means leaving the capsules in the original BioLab container with the lid closed and any desiccant in place, stored at or below room temperature in a dark cupboard rather than on a windowsill or near a radiator, kettle or shower. Keep the original label, since the batch number is the only link between the pack and any certificate. Capsules that have stuck together, softened or discoloured should be set aside and disposed of according to local rules rather than examined further. Keep the pack out of reach of children and apart from food, and handle it with the ordinary laboratory precautions of gloves, clear labelling and a clean work surface.\u003c\/p\u003e\n\u003ch2\u003eGlossary\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eOestrogen-related receptor (ERR)\u003c\/strong\u003e: named for sequence similarity to the oestrogen receptor, the ERR alpha, beta and gamma proteins do not respond to oestrogen and govern energy-producing genes.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eAgonist\u003c\/strong\u003e: a molecule that activates a receptor; SLU-PP-332 activates all three ERRs.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eNuclear receptor\u003c\/strong\u003e: a protein inside the cell that binds a molecule and then switches sets of genes on or off.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eOxidative metabolism\u003c\/strong\u003e: energy production that uses oxygen, carried out in mitochondria.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eOral bioavailability\u003c\/strong\u003e: how much of a compound taken in by mouth survives absorption and first passage through the liver to circulate intact, expressed as a percentage.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eNNMT\u003c\/strong\u003e: nicotinamide N-methyltransferase, the enzyme inhibited by 5-Amino-1MQ.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eNAD+\u003c\/strong\u003e: a coenzyme central to cellular energy reactions.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eAcylhydrazone\u003c\/strong\u003e: a C(=O)-NH-N=C bridge; in SLU-PP-332 it joins the naphthalene and hydroxybenzoyl parts and is the likeliest site of breakdown.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eLabel claim\u003c\/strong\u003e: the amount per capsule printed on the BioLab label, here 500 mcg.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003em\/z\u003c\/strong\u003e: mass-to-charge ratio, the value a mass spectrometer reports for an ion.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2\u003eAbout BioLab Metabolic Boost 500 mcg\u003c\/h2\u003e\n\u003cp\u003eThis is the top strength in BioLab's Metabolic Boost line, the brand's trade name for its SLU-PP-332 capsules; the name belongs to the product and says nothing about effects. With 500 mcg per capsule and 60 capsules, the tub is labelled at 30 mg in total, five times the 100 mcg tub and two and a half times the 200 mcg tub. On the front, a 500 MCG\/CAPS arrow tag, a 60 CAPS tag and a yellow 500 mcg starburst mark the strength, while the purple-blue tub, orange trim, tiger head and BIOLAB band match the lower strengths.\u003c\/p\u003e\n\u003cp\u003eBioLab keeps its research compounds in a category separate from its supplements, marks them as not for consumption and says it acts only as their distributor, leaving the maker unnamed.\u003c\/p\u003e\n\u003ch3\u003eComparing the three BioLab strengths\u003c\/h3\u003e\n\u003ctable\u003e\n\u003cthead\u003e\u003ctr\u003e\n\u003cth\u003eListing\u003c\/th\u003e\n\u003cth\u003ePer capsule\u003c\/th\u003e\n\u003cth\u003eCapsules\u003c\/th\u003e\n\u003cth\u003eTotal per tub\u003c\/th\u003e\n\u003cth\u003eBioLab report on our listing\u003c\/th\u003e\n\u003c\/tr\u003e\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003ca href=\"\/en-ro\/products\/biolab-metabolic-boost-slu-pp-332-100-mcg-60-caps\"\u003eMetabolic Boost 100 mcg\u003c\/a\u003e\u003c\/td\u003e\n\u003ctd\u003e100 mcg\u003c\/td\u003e\n\u003ctd\u003e60\u003c\/td\u003e\n\u003ctd\u003e6 mg\u003c\/td\u003e\n\u003ctd\u003eYes, October 2024\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003ca href=\"\/en-ro\/products\/biolab-metabolic-boost-slu-pp-332-200-mcg-60-caps\"\u003eMetabolic Boost 200 mcg\u003c\/a\u003e\u003c\/td\u003e\n\u003ctd\u003e200 mcg\u003c\/td\u003e\n\u003ctd\u003e60\u003c\/td\u003e\n\u003ctd\u003e12 mg\u003c\/td\u003e\n\u003ctd\u003eNone at present\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMetabolic Boost 500 mcg (this listing)\u003c\/td\u003e\n\u003ctd\u003e500 mcg\u003c\/td\u003e\n\u003ctd\u003e60\u003c\/td\u003e\n\u003ctd\u003e30 mg\u003c\/td\u003e\n\u003ctd\u003eNone at present\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003ch3\u003eDocuments for this strength\u003c\/h3\u003e\n\u003cp\u003eBioLab says it posts the current report for each product in the gallery and Tests tab of its own shop and supplies it on request. None is shown here for the 500 mcg tub, and the 2024 report on the 100 mcg listing does not cover this fill. A report that could confirm this label would state content per capsule against 500 mcg, with a date and a lot number; mention the lot on your tub when asking what documents are held. The other brand we stock, \u003ca href=\"\/en-ro\/products\/thoroughbred-labs-slu\"\u003eThoroughbred Labs\u003c\/a\u003e, prints 250 mcg per capsule on a 60-capsule tub (15 mg in total); the \u003ca href=\"\/en-ro\/collections\/slu-pp-332\"\u003eSLU-PP-332 collection\u003c\/a\u003e sets the brands against each other, with the full ranges on the \u003ca href=\"\/en-ro\/collections\/brand-biolab\"\u003eBioLab\u003c\/a\u003e and \u003ca href=\"\/en-ro\/collections\/brand-thoroughbred-labs\"\u003eThoroughbred Labs\u003c\/a\u003e pages.\u003c\/p\u003e\n\u003cp\u003eThe compound itself is a preclinical research molecule: a pan-ERR agonist from Saint Louis University with no human data, no UK licence and a WADA prohibition that applies at all times.\u003c\/p\u003e\n\u003ch2\u003eRelated\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003e\u003ca href=\"\/en-ro\/collections\/slu-pp-332\"\u003eAll brands of SLU-PP-332 we stock, compared\u003c\/a\u003e\u003c\/li\u003e\n\u003cli\u003e\u003ca href=\"\/en-ro\/collections\/brand-biolab\"\u003eAll BioLab products\u003c\/a\u003e\u003c\/li\u003e\n\u003cli\u003e\n\u003ca href=\"\/en-ro\/collections\/5-amino-1mq\"\u003e5-Amino-1MQ\u003c\/a\u003e and \u003ca href=\"\/en-ro\/collections\/cardarine\"\u003eCardarine (GW-501516)\u003c\/a\u003e\n\u003c\/li\u003e\n\u003cli\u003e\u003ca href=\"\/en-ro\/blogs\/news\/slu-pp-332-and-5-amino-1mq-research-guide\"\u003eSLU-PP-332 and 5-Amino-1MQ research guide\u003c\/a\u003e\u003c\/li\u003e\n\u003cli\u003e\u003ca href=\"\/en-ro\/blogs\/news\/what-are-sarms-the-2026-research-guide\"\u003eResearch guide to SARMs and related compounds\u003c\/a\u003e\u003c\/li\u003e\n\u003cli\u003e\u003ca href=\"\/en-ro\/pages\/lab-tests\"\u003eBatch testing and certificates of analysis\u003c\/a\u003e\u003c\/li\u003e\n\u003cli\u003e\n\u003ca href=\"\/en-ro\/pages\/shipping\"\u003eDelivery\u003c\/a\u003e and \u003ca href=\"\/en-ro\/pages\/guarantee\"\u003ereturns\u003c\/a\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cem\u003eResearch compounds sold by Free Muscle are supplied for laboratory research use only and are not for human consumption. They are not authorised as medicines by the MHRA, EMA or FDA, are not food supplements, and are sold only to adults aged 18 or over. Nothing on this page is medical or dosing advice. Summaries of published research describe study findings and are not claims about any product.\u003c\/em\u003e\u003c\/p\u003e\n\u003ch2\u003eReferences\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003eBillon C, et al. Synthetic ERRalpha\/beta\/gamma Agonist Induces an ERRalpha-Dependent Acute Aerobic Exercise Response and Enhances Exercise Capacity. ACS Chem Biol. 2023;18(4):756-771. \u003ca href=\"https:\/\/pubmed.ncbi.nlm.nih.gov\/36988910\/\" rel=\"noopener\"\u003ePMID: 36988910\u003c\/a\u003e.\u003c\/li\u003e\n\u003cli\u003eBillon C, et al. A Synthetic ERR Agonist Alleviates Metabolic Syndrome. J Pharmacol Exp Ther. 2024;388(2):232-240. \u003ca href=\"https:\/\/pubmed.ncbi.nlm.nih.gov\/37739806\/\" rel=\"noopener\"\u003ePMID: 37739806\u003c\/a\u003e.\u003c\/li\u003e\n\u003cli\u003eBillon C, et al. An orally active estrogen receptor-related receptor agonist, SLU-PP-915, enhances aerobic exercise capacity. J Pharmacol Exp Ther. 2026;393(1):103787. \u003ca href=\"https:\/\/pubmed.ncbi.nlm.nih.gov\/41421047\/\" rel=\"noopener\"\u003ePMID: 41421047\u003c\/a\u003e.\u003c\/li\u003e\n\u003cli\u003eAvliyakulov NK, et al. Analysis and Identification of In Vitro Metabolites of Exercise Mimetic SLU-PP-332 ERRalpha\/beta\/gamma Agonist for Doping-Control Purposes. Drug Test Anal. 2026;18(3):439-450. \u003ca href=\"https:\/\/pubmed.ncbi.nlm.nih.gov\/41688415\/\" rel=\"noopener\"\u003ePMID: 41688415\u003c\/a\u003e.\u003c\/li\u003e\n\u003cli\u003eNeelakantan H, et al. Selective and membrane-permeable small molecule inhibitors of nicotinamide N-methyltransferase reverse high fat diet-induced obesity in mice. Biochem Pharmacol. 2018;147:141-152. \u003ca href=\"https:\/\/pubmed.ncbi.nlm.nih.gov\/29155147\/\" rel=\"noopener\"\u003ePMID: 29155147\u003c\/a\u003e.\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"BioLab","offers":[{"title":"Default Title","offer_id":48468978794722,"sku":null,"price":205.99,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0772\/3499\/5426\/files\/metabolic-boost-slu-pp-332-500-mcg-60-caps_2025fe19-4aad-435d-bec7-acbebe9e6a63.jpg?v=1789931393"}],"url":"https:\/\/freemuscle.co.uk\/en-ro\/collections\/brand-biolab.oembed","provider":"Free Muscle","version":"1.0","type":"link"}