Since 1936 Plus MSM 1500 mg Per 3 Tablets Helps Lubricate & Protect Joints High Potency‡ Glucosamine with Hyaluronic Acid & MSM Joint Care SupplementSchiff Glucosamine Plus MSM helps you maintain healthy structure and function of cartilage in your joints.‡High Potency - Glucosamine Hydrochloride (HCI) has a high potency of active Glucosamine. Glucosamine HCI is about 83% Glucosamine, while some brands use Glucosamine Sulfate that is only about 65% Glucosamine.Sure Dissolve - Schiff Sure Dissolve tablets are formulated to disintegrate within one hour.