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 Bpc 157 and TB 500 My protocol and results explained! I've talked about this with probably a dozen different guys over the last 4 months so hopefully this helps someone else. #progress # BPC 157 TB 500 (T4) Blend Pure Health Peptides BPC 157, TB 500, KPV, GHK Cu 80mg (Klow Blend) Pharma Grade Peptides