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 Pentadecapeptide, also known as BPC 157, is a synthetic peptide composed of 15 amino acids, derived from a protective protein in the stomach. It is widely recognized for its regenerative and healing I've been using Pentadecapeptide (PDA) and the results have been unreal. this peptide is almost identical to BPC 157 with the exception of an additional marginate salt, which has contributed to Modulatory effects of BPC 157 on vasomotor tone and the activation of Src Caveolin 1 endothelial nitric oxide synthase pathway Scientific Reports