The Stable Gastric Pentadecapeptide BPC 157 Pleiotropic Beneficial Activity and Its Possible Relations with Neurotransmitter Activity What Is BPC 157? A Medical Clinic's Guide to the Body Protective Peptide, Its Uses, and What It Actually Does Perfect B Gray Market Peptides: So Much Hype, So Little Data Peptides are short chains of amino acids that act as signaling molecules, basically telling your cells how to function. Your body makes them naturally, but stress, poor sleep, aging, and chronic inflammation