Valupak glucosamine and chondroitin tablets 30 glucosamine is an amino sugar synthesised from glutamine and glucose chondroitin is a sulphated glycosaminoglycan found in cartilage they both occur naturally in the body and appear to be involved in the formation and repair of cartilage the glucosamine and chondroitin combination provides rsquo of cartilage helps to cushion joints and is important for the maintenance of healthy joints