Most peptides arent orally bioavailable and they get broken down in the stomach. BPC 157 is a notable exception, especially the arginate salt, which is the superior form when it comes to oral BPC 157 and Erectile Dysfunction: What the Evidence Actually Shows Meet PDA (Pentadecapeptide Arginate) a powerful injectable peptide designed to give BPC 157 a run for its money! Whether you're healing soft tissue injuries, supporting gut repair, or targeting nerve recovery, PDA Stable Gastric Pentadecapeptide BPC 157 as a Therapy and Safety Key: A Special Beneficial Pleiotropic Effect Controlling and Modulating Angiogenesis and the NO System