The Peptide Craze Ground Truths BPC 157: Miracle Healing Peptide or Hidden Danger? Peptides like BPC 157, TB 500, and growth hormone secretagogues are increasingly marketed for recovery and injury healing., But what does the science actually say?, Most evidence comes from animal Should i take BPC 157? BPC 157 is a chain of 15 amino acids derived from a protein naturally found in your stomach lining. It has over 30 years of preclinical research behind it