BPC 157 Erectile Dysfunction Study: What the Current Evidence Actually Shows BPC 157 and erectile dysfunction: what the evidence and real world experience actually show BPC 157 Penis Growth: What the Evidence Shows and Realistic Expectations Frontiers Stable binding to phosphatidylserine containing membranes requires conserved arginine residues in tandem C domains of blood coagulation factor VIII Theres a lot of debate about whether BPC 157 needs to be injected or if the oral version works. The truth is, oral BPC 157 can be just as effective as injectablebut with one key adjustment. A small