BPC 157 Pure Oral Spray, .85 Oz (120 sprays) Marty Ross MD Supplements BPC 157: Miracle Healing Peptide or Hidden Danger? BPC 157 Explained: What We Know And What We Dont, BPC 157 (Body Protection Compound 157) is a 15amino acid peptide derived from a protein found in gastric juice. Preclinical research suggests Peptides like BPC 157 are everywhere on social media right now. They are most commonly promoted for injury and tendon healing and are often paired with other peptides such as TB 500.