Glucosamine acts as a "septum" around the joint in the body. Because some patients with osteoarthritis "septum" become thinner and stiffer. Taking glucosamine as a dietary supplement (health product) can provide more "materials" for human body to reconstruct "septum". Gold shell means carboxymethyl chitosan has learned that the mechanism of action of glucosamine hydrochloride and glucosamine sulfate is different. They believe that sulfate, as a part of glucosamine sulfate, is an important element used by human body to synthesize cartilage tissue.