PDA IS REPLACING MY FAVORITE PEPTIDE BPC 157. , Well the FDA screwed up several peptides for a lot of us BUT We have just gotten our hands on an almost identical peptide called PDA or Pentadeca How Long Does BPC 157 Take to Work? Timeline and Guide BPC 157: Benefits, Dosage, Side Effects & Results Xandro Lab 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 The Human Lab Rats Injecting Themselves with Peptides Office for Science and Society McGill University