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: Experimental Peptide Creates Risk for Athletes Early evidence suggests BPC 157 repairs tissue rather than just dulling symptoms. To read more, tap the link in bio. 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