Glucosamine is an aminomonosaccharide synthesized by transamidase enzymes from glucose and an amine group from glutamine. Glucosamine Sulfate is an essential component of joints and intestinal tissue and is involved in the production of synovial fluid, which lubricates the joints. Sulfur is also utilized in the production of cartilage tissue. This product is best taken with BioSil — the Biologically Active Silicon that strengthens joints.