Is the lack of human data in BPC 157 a red flag? If a drug could actually knit torn tendons back together in weeks, a trillion dollar pharmaceutical industry probably wouldn't bury BPC 157 & The Gut Brain Axis: A Practitioner's Definitive Review of the Evidence Understanding the Legal Risks of BPC 157 and Other Unapproved Peptides Holt Law BPC 157: Interesting Biology, Limited Clinical Proof, BPC 157 is biologically interesting, but its not clinically proven. Most evidence is preclinical, and human data is still small and preliminary.