Can you inject peptides into the knee? Peptide Therapy in Brandon & Lakeland, FL BPC 157, TB 500 & GHK Cu Stable Gastric Pentadecapeptide BPC 157 as Therapy After Surgical Detachment of the Quadriceps Muscle from Its Attachments for Muscle to Bone Reattachment in Rats Transcend offers injectable administration forms for many of its medications, but did you know that there are different methods of injection administration? Intramuscular (injection into the muscle) vs Subcutaneous ( injection into subcutaneous