Where to Inject BPC 157 for Knee Pain? There's a common misconception about peptide injections that targeting them directly at pain sites is more effective than abdominal injection. However, when you inject peptides like BPC 157 When you inject peptides like BPC 157 over the area of pain, it does not directly go to the area of tissue damage initially. The medication is absorbed by the blood vessels in the subcutaneous tissue PRP Injection for Knee Pain Relief What is BPC 157? Peptide Injection Site Reactions: What's Normal, What's Not, and What Revolution Health & Wellness