Superior Joint Support From A Clinically Proven Compound! Glucosamine is composed of glucose and glutamine (an amino acid). It is utilized by chondrocytes to form glycosaminoglycans (GSG's) and proteoglycans. Both of these constituents attract and bind water into cartilage, increasing resiliency. Glucosamine is supplied mostly by China. The shells of shrimp and crabs have their proteins and minerals removed producing Chitin or poly N-acetylglucosamine. Manufacturers use acid with a depolymerizing and deacetylating process to produce glucosamine hydrochloride or glucosamine sulfate. 100 Tablets