Joint Care Supplement. Highest potency form of Glucosamine (Highest Potency: Schiff uses Glucosamine Hydrochloride (HCl), which has the highest potency of active Glucosamine among Glucosamine forms. Glucosamine Hydrochloride is about 83% Glucosamine, while most brands use Glucosamine Sulfate that is only about 65% Glucosamine.) Clinically tested amounts of MSM. With Schiff Glucosamine plus MSM, you can maintain healthy structure and function of cartilage in your joints. (This statement has not been evaluated by the Food and Drug Administration. This product is not intended to diagnose, teat, cure or prevent any disease.) Guaranteed: No added sugar (sucrose, fructose, lactose) salt (sodium chloride), yeast, wheat, gluten or milk. No preservatives or artificial flavors.