Puritan"s Pride Double Strength Glucosamine Chondroitin MSM Joint Soother Combines the top three structural components found in popular joint support products - Glucosamine, Chondroitin and MSM - with amino and herbal support from Collagen and Boswellia Serrata** This high-quality formula delivers 1,500 mg of Glucosamine HCI to help build and support cartilage, lubricate the joints, and helps with occasional joint stress due to exercise or physical activity.