Glucosamine is an amino monosaccharide produced naturally in the body by chondrocytes in cartilage which helps maintain and build healthy joint tissue. Chondrocytes use glucosamine to produce more cartilage components: collagen, chondroitin sulphate, hyaluronic acid and other joint constituents. Glucosamine is found in high concentrations in cartilage and other connective tissues. As we age, the body’s own production of glucosamine is diminished; this causes joint cartilage to lose its water holding capacity. Osteoarthritis is characterised by the breakdown of cartilage, and so supplementing the body’s natural glucosamine production may repair and rebuild worn or damaged cartilage as well as reducing pain and return mobility.