BPC 157 Basic Research Signals BPC 157 is a synthetic peptide made of 15 amino acids. It was originally derived from a protective protein found in gastric juice. Researchers often study BPC 157 BPC 157 has already hit the mainstream, but should it hit your bloodstream? BPC 157 Benefits, Dosage & Before After Results Frontiers Stable Gastric Pentadecapeptide BPC 157 Therapy for Primary Abdominal Compartment Syndrome in Rats