Jarrow Formulas Glucosamine + Chondroitin + MSM features glucosamine sulfate stabilized with potassium chloride (KCI). Glucosamine and chondroitin sulfate are fundamental components of hyaluronic acid in joint cartilage and synovial fluid.(1) Methylsulfonylmethane (MSM) is an organic source of sulfur, an antioxidant mineral and component of structural body tissues, such as cartilage.(1) Vitamin C and manganese support the synthesis of collagen and cartilage.(1) This glucosamine chondroitin MSM supplement for joint health is non-GMO and gluten free. Adults take four capsules per day or as directed by your qualified healthcare consultant. (1)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.