Where to inject BPC 157 for an orthopedic injury 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 Hidden Risks of BPC157: What Patients Need to Know About Contamination and Safety Regenexx at New Regeneration Orthopedics Too often, BPC 157 gets boxed into a single use: injury recovery. Gabriel Alizaidy, MD, MS