Look for Independent Testing USP, NSF, or another credible independent certification can add confidence about identity, potency, and contaminants, though certification is voluntary
As an additional example to that of the trefoil peptides noted above, the peptide EGF (epidermal growth factor) is produced in human milk to promote growth of the gastrointestinal tract in newborn infants, but the same peptide aggressively stimulates the growth of breast cancer cells in adults
WADA Status: Is MOTS-c Banned in Sports
Adipex and Suprenza (phentermine) Qsymia (phentermine-topiramate) Contrave (naltrexone-bupropion) Xenical and Alli (orlistat) Imcivree (setmalanotide) Plenity (carboxymethylcellulose hydrogel) Several additional agents are used off-label for weight loss at acceptable risk when prescribed thoughtfully and documented as off-label
The most important point is this: BPC-157 is not an FDA-approved treatment for any medical condition, and human research is still limited