Dietary Supplement. Promotes joint health. Contains no sugar, starch, artificial colors, flavors, preservatives, corn, soy, yeast, wheat, grain, gluten, egg, or milk products. Glucosamine Sulfate is a natural seafood extract derived from crab shell. A building block of joint tissue, Glucosamine helps the body manufacture substances necessary for healthy joints, Its potassium level helps support nerve and muscles health, as well as cell fluid balance. Our product is sodium free. Potency and purity guarantee. (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).