21st Century Arthri-Flex Advantage Tablet is an effective joint support formulas developed from the latest studies on joint nutrition science. Arthri-Flex combines Glucosamine Sulfate, naturally occurring Chondroitin Sulfate, and MSM (Methylsulfonylmethane) with FLEXICOL (a blend of premium Type II Chicken Sternum Collagen that naturally contains both Chondroitin Sulfate and Hyaluronic Acid) and other synergistic herbal extracts and mineral compounds to be a valuable supplement for healthy functioning joints and cartilages.