Glucosamine is a natural sugar that exists in the fluid around the joints, as well as in animal bones, bone marrow, shellfish, and fungi. It plays an important role in making glycosaminoglycans and glycoproteins, which are essential building blocks of many parts of your joints, including ligaments, tendons, cartilage and synovial fluid.
Animal studies have found that glucosamine can both delay the breakdown of and act in enhancing repair of damaged cartilage.
