Glucosamine Sulphate(C6H13NO5) is an amino sugar and a prominent precursor in the biochemical synthesis of glycosylated proteins and lipids.Glucosamine is vital for building cartilage. Cartilage is a flexible, tough connective tissue found in several areas of the body. This fine, rubbery tissue functions as padding, a cushion for bones and joints.Joint cartilage requires glucosamine because it is a precursor for glycosaminoglycans (glucosamine makes glycosaminoglycans). Glycosaminoglycans are a major component of joint cartilage.Sulfur needs to be incorporated into cartilage in order to make and repair it. Glucosamine plays a crucial role in incorporating sulfur into cartilage.As we age, glucosamine levels go down, which can lead to eventual joint deterioration.