Glucosamine Sulfate provides the joints with the building blocks they need to maintain healthy cartilage and joint function.* It provides the raw material needed by the body to manufacture a mucopolysaccharide found in cartilage.* Glucosamine Sulfate is necessary for building the protein molecules responsible for giving cartilage its strength and resilience.* Glucosamine Sulfate is a widely used daily supplement. Unfortunately, most Glucosamine Sulfate is sourced from shellfish that carry elevated levels of lead and are highly allergic. Our vegetable-based Glucosamine Sulfate has the same molecular formula as the shellfish-based material without the impurities, and is suitable for vegetarians, as well as those with a shellfish allergy. It is verified non-GMO at multiple production points.