Chondroitin is a naturally occurring substance found in the joints, where it helps attract fluids and nutrients into the cartilage. Glucosamine Sulphate is a substance formed from amino acids and sugars that occur naturally in the joints and muscles where it plays a role in the mobility and smooth working of the connective tissues. Taken together in this single supplement, these two nutrients combine to provide comprehensive nutritional support to the joints and connective tissues.