My Experiment with Peptides (BPC 157) for Shoulder Recovery (Confounding Variables) Ep 255 Wits & Weights Evidence Based Fitness & Nutrition for Lifters Over 40 Why I'm Getting Asked About Peptides Every Day in My Portland Sports Medicine Clinic: David N Westerdahl, MD: Sports Medicine Physician 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 When you have bursitis, even little things, like getting dressed or combing your hair, can really hurt.