BPC 157 Prime Human Labs What Is BPC 157? A Medical Clinic's Guide to the Body Protective Peptide, Its Uses, and What It Actually Does Perfect B Stable Gastric Pentadecapeptide BPC 157 and Striated, Smooth, and Heart Muscle Dupuytren's contracture is caused by a fibroproliferative disease in which fibrous cords form in the hand, pulling one or more fingers into a bent position and interfering with hand function.