BPC 157: Tendon Repair and More Peptide Series #2 BPC 157 Your body already makes this peptide. BPC 157 is naturally found in your gastric juice it's part of how your gut protects itself. Scientists isolated it, PDF) Pentadecapeptide BPC 157 Interactions with Adrenergic and Dopaminergic Systems in Mucosal Protection in Stress Stable gastric pentadecapeptide BPC 157 can improve the healing course of spinal cord injury and lead to functional recovery in rats Journal of Orthopaedic Surgery and Research Springer Nature Link BPC 157 has already hit the mainstream, but should it hit your bloodstream?