PharmaHorse Glucosamine & MSM is a 50/50 blend of glucosamine and MSM. PharmaHorse Glucosamine consists of 100% pure glucosamine sulfate 2KCl. MSM, short for methylsulfonylmethane, is rich in sulfur; the sulfur content of MSM is 34%. PharmaHorse Glucosamine & MSM is 100% free of added sugars. Sugars are not always listed as sugar; common sugars and sweeteners in supplements include apple flavoring, dextrose, sucrose, and glucose. PharmaHorse does not use any sugar or sweetener, distinguishing itself from other suppliers. Naturally, the products also contain no other fillers or flavorings.