Dr. TLDR: BPC 157 has not been proven to cause cancer. But it has also not been proven safe in people with active cancer, recent cancer, premalignant conditions, suspicious lesions, or high What do we know about 'research only' peptides? Q&A with expert Stuart Phillips McMaster News Frontiers Pharmacokinetics, distribution, metabolism, and excretion of body protective compound 157, a potential drug for treating various wounds, in rats and dogs BPC 157 & The Gut Brain Axis: A Practitioner's Definitive Review of the Evidence Peptides like BPC 157 are everywhere on social media right now. They are most commonly promoted for injury and tendon healing and are often paired with other peptides such as TB 500.