Doctor's Best® Synergistic Glucosamine MSM Formula is a nutritional supplement that contains sodium-free and potassium-stabilized glucosamine sulfate to maintain healthy joints and connective tissue. It contains Lignisul® MSM (methylsulfonylmethane), a naturally-occurring source of unprocessed nutritional sulfur that is easily assimilated by the body to satisfy its sulfur requirements.

Glucosamine Sulfate helps to maintain healthful joint performance and promoting healthful cartilage in the joints. MSM helps the functioning of body organs and joints by providing sulfur to maintain the condition of connective tissue, and added vitamin C promotes the production of collagen, a protein that increases the strength of cartilage.