Source Naturals Glucosamine Chondroitin gives essential building blocks for healthy joints and connective tissues. Glucosamine, an amino sugar, is an important structural component of glycosaminoglycans, large linear molecules that assist to lubricate joints, nourish cartilage and connective tissue, and Enhance in healing wounds. Manganese is involved in the synthesis of collagen, and chondroitin sulfate lends extra structural support via its high degree of interaction with collagen fibers. Molybdenum Enhances in full metabolism of glucosamine and chondroitin.