3 Reasons to Supplement with Glutamine After Rotator Cuff Repair Immune Function Surgery puts stress on the body, and glutamine helps support immune health during the critical recovery window. What is BPC 157? Everything to know about this peptide 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 BPC 157 is a peptide made up of short chain amino acids that may help support recovery, repair, and reduce inflammation. Whether youre an athlete recovering from an injury or dealing with slower