BPC 157 & The Gut Brain Axis: A Practitioner's Definitive Review of the Evidence Would you take a drug tested only in rats? The evidence in humans for the safety and efficacy of BPC 157 is EXTREMELY limited. People need to understand what we do and don't BPC 157: What It Is, What We Know, and Why Its Use for Arthritis Remains Unproven San Diego Orthobiologics Medical Group 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, 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