BPC-157 in the UK: evidence, legal status and why we don't sell it

01The short version

BPC-157 is the most searched research peptide in the UK. It is a 15-amino-acid fragment of a protein found in stomach juice, with a large body of animal studies on tissue repair and almost no human trials. It is legal to buy and possess in the UK, sold "not for human use", not licensed, and banned in tested sport. COGENT does not sell it. Here is what is known.

02What it is

Body Protection Compound 157 was isolated in the 1990s by a group in Zagreb from a gastric protein. Their lab has published most of the research since: hundreds of rodent studies reporting faster healing of tendons, ligaments, muscle, gut lining and blood vessels. It is stable in stomach acid, unusually for a peptide, which is why oral capsules exist alongside injectable vials.

03The evidence, honestly

Animal: extensive and consistent, but overwhelmingly from one research group, which is a red flag in any field. Human: a handful of very small studies and case reports, no randomised controlled trial of any size, and no safety data of the kind a licence would require. The FDA in the United States placed it on a list of compounds that pose "significant safety risks" in 2023, mainly because of the absence of data rather than evidence of harm.

User reports are enthusiastic and unverifiable. The gap between the rodent data and the human data is the widest of any commonly used peptide.

04Legal status in the UK

Not a controlled substance. Not a licensed medicine. Legal to buy and possess. Selling it with a medicinal claim ("for injury recovery") breaches medicines regulations; selling it as a research chemical does not. The full picture is in Are peptides legal in the UK?. WADA prohibits it, so it is a doping violation in tested sport.

05Safety and side effects

Unknown, in the proper sense. Reported: injection-site reactions, nausea, dizziness. Theoretical concern: a compound that promotes blood vessel growth could in principle feed a tumour; there is no evidence of this in people because there is no evidence in people of much at all. Anyone with a cancer history should treat that as a hard stop.

06Why we do not sell it

Our rule is one human study in healthy adults, minimum. BPC-157 does not have one. When it does, and the safety picture is clearer, that may change. Until then the peptide product we make is FOCUS-01 (Semax), which does have that study [1].

COGENT makes two peptide nasal sprays, Semax (FOCUS-01) and Selank (CALM-02), and nothing else. We do not sell the compounds discussed below and this article does not recommend buying them. It exists because people search for these things and deserve an honest answer.