Activ Juice Cherry Plus 500ml. Glucosamine Hydrochloride contains more Glucosamine per gram than Glucosamine Sulphate. Chondroitin Sulphate works well in combination with Glucosamine, it is a glycosaminoglycan (GAG). GAG's are normal constituents of connective tissue. Opti MSM (R) is a patented form of MSM, certified for quality & consistent purity. MSM contains sulphur, an element essential to life, found in all tissue protein. Activ Juice for Joints combines delicious sour cherry juice, a natural source of antioxidants, with Glucosamine, Chondroitin, Opti MSM (R) & Vitamin C to provide a refreshing way to maintain normal function of cartilage in joints, bone, skin, teeth & blood vessels. Each 25ml serving provides 1500mg of Glucosamine Hydrochloride.