Does BPC 157 Build Muscle? Effectiveness and Benefits BPC 157 is a peptide made up of short chain amino acids that may help support recovery, repair, and reduce inflammation. Whether you're an athlete recovering from an injury or dealing with Do Peptides Work? From Building Muscle to Injury Recovery Everyones yelling BPC 157, Almost nobody knows what it actually is., Heres the truth , Your body already knows it., BPC 157 = tiny protein fragment from your gut, Your system recognizes it.,