BPC 157: Tendon Repair and More 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 BPC 157 is the OG peptide that started the craze, and for good reason. BUT because one of the primary mechanisms of BPC 157 is to up regulate blood vessel formation, its led to Peptide Therapy in Brandon & Lakeland, FL BPC 157, TB 500 & GHK Cu