Solaray MSM & Glucosamine Veg Capsules For Joint Comfort & Joint Health is the advanced formula which helps to maintain lubrication in joints, supports joint flexibility and range of motion. MSM is a natural dietary source of sulfur necessary for making collagen, the primary constituent of cartilage and connective tissue. Glucosamine sulfate is intended to help support connective tissue by keeping collagen supple and healthy in joints. The formula contains 50 mg of vitamin C to help with enhanced absorption. This product is made without any artificial colour, flavour & preservatives.