Synergistic GlucosamineMSM Formula supplies only sodium-free, potassium stabilized glucosamine sulfate. Lignisul MSM is pure MSM methylsulfonylmethane, a naturally occurring source of organic dietary sulfur that is readily absorbed and utilized by the body to meet its sulfur needs. Glucosamine Sulfate supports normal, healthy joint function and helps maintain healthy cartilage in joints. MSM supports organ and joint function by donating sulfur for maintenance of healthy connective tissue. Vitamin C is essential for production of collagen, a protein that gives strenght to cartilage. Glucosamine is obtained from the shell of shellfish. Supplement Facts Serving Size: 2 Cap Servings per Container: 90 Amount Per Serving Vitamin C ascorbic acid 100 mg Potassium from glucosamine sulfate KCL 61 mg Chloride from glucosamine sulfate KCL 56 mg Glucosamine sulfate KCl Supply sulfur 80 mg 500 mg MSM Lignisul Supplying sulfur 340 mg 1 gram 1000 Milligrams Other Ingredients: Cellulose, magnesium stea