BPC 157 Review: Doctor Explains Benefits, Safety & Cancer Risk BPC 157 is one of the peptides that has been getting a lot of attention recently. It is a synthetic peptide derived from a protein found in human gastric juice. In experimental research, Frontiers Pharmacokinetics, distribution, metabolism, and excretion of body protective compound 157, a potential drug for treating various wounds, in rats and dogs BPC 157 Explained: Benefits, Risks, and What the Research Actually Shows