Can you inject peptides into the knee? 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 Peptide Therapy Raleigh, NC Stem Cells RegenesisMD BPC 157 Peptide Targeted Healing & Recovery Support BPC 157 (Body Protection Compound) is a regenerative peptide known for supporting the body's natural healing processes. What it helps with: Tendons & ligaments Joint pain