BPC 157 Peptide Erectile Dysfunction: What the Evidence Shows and Practical Considerations Where to Inject BPC 157 for Erectile Dysfunction There are zero randomized clinical trials on BPC 157. Zero. Here's what we actually know: it was isolated from stomach acid because researchers noticed those cells regenerate constantly in a harsh environment. Can BPC 157 cause erectile dysfunction? BPC 157 and Penis Growth: What the Evidence Shows and What It Doesn't BPC 157 Erectile Dysfunction: What the Evidence Shows and Practical Considerations