Understanding Negative Side Effects of Peptides: Mechanisms and Prevention Too often, BPC 157 gets boxed into a single use: injury recovery. Gabriel Alizaidy, MD, MS BPC 157 Peptide: Benefits, Dosage & Side Effects 2026 Orthopedic Use of BPC 157 Sports Med Review 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