How to relieve shoulder pain? Steroid injections are often used to treat shoulder pain caused by inflammation like bursitis, tendonitis, or rotator cuff irritation. The medication is injected I've been using Pentadecapeptide (PDA) and the results have been unreal. this peptide is almost identical to BPC 157 with the exception of an additional marginate salt, which has contributed to BPC 157 Peptide Therapy Regenerative Medicine Dr. Henry Sobo, MD BPC 157 for Tendon Healing, Injury Recovery & Musculoskeletal Repair BPC 157 Benefits, Dosage & Before After Results What gauge of needle is used for intra articular injection of BPC 157 (Body Protection Compound 157) into the shoulder joint?