Glucosamine & Chondroitin. Added MSM. 100% Pure Pharmaceutical Grade. What is Joint Repair with MSM? Joint Repair is formulated for the individual who, either through traumatic injury or gradual deterioration of the joints, is in need of maximum cartilage and joint support. Glucosamine Sulfate and Chondroitin Sulfate help to maintain structural integrity of joints, connective tissues, and blood vessels. MSM has been added because of the role it plays in promoting healthy collagen for maintaining healthy joints and connective tissue. (Each caplet's coating protects it from ultraviolet rays.) (These statements have not been evaluated by the Food and Drug Administration. This product is not intended to diagnose, treat, cure or prevent any disease.)