We use superior science to make smarter formulas like Jarrow Formulas® Glucosamine + Chondroitin + MSM, which supplies nutrient support for joint health.* Glucosamine and chondroitin sulfate are components of hyaluronic acid in joint cartilage and synovial fluid. Methylsulfonylmethane (MSM) is a source of sulfur, an antioxidant mineral and component of structural body tissues, such as cartilage. To support the synthesis of collagen and cartilage the formula also contains vitamin C and manganese. The formula is stabilized with potassium chloride (KCI). *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.