Arthri-Flex Advantage + Vitamin D3, developed from joint nutrition science to support the comfort, flexibility and mobility of the body's joints. Arthri-Flex Advantage + Vitamin D3 was developed as a multi-nutrient supplement that may support joint health and flexibility. Arthri-Flex Advantage + Vitamin D3 combines Glucosamine Sulfate & MSM (Methylsulfonylmethane) with our Proprietary Blend of premium Chicken Sternum Type II Collagen (naturally containing Chondroitin Sulfate), Hyaluronic Acid, herbal extracts, and mineral nutrients, that may work in synergy to support both joints & cartilage. Now with Vitamin D3 for its bone support potential.