From Manufacturer Label:Mobility, flexibility, strength, lubrication and comfort are 5 signs of joint health supported by Move Free Advanced Plus MSM & Vitamin D.It does so with a unique formula of: Glucosamine and Chondroitin, Uniflex, and Hyaluronic Acid (HA). Plus it contains MSM and Vitamin D3 to offer extra cartilage and bone support.Key for the formation of cartilage, Glucosamine is an essential building block of joints.** It also supports the mobility and flexibility you want in everyday living**.A building block of cartilage, Chondroitin supports joint strength by helping to resist compression in the joint. Chondroitin attracts fluid to your joints to support cushioning and lubrication.**Joint Fluid, or Hyaluronic Acid (HA) is the same molecule found naturally in healthy joint fluid that support joint lubrication and smooth movement. As we get older, our levels of HA tend to decrease**.As a natural mineral complex, Uniflex supports joint comfort.**A source of sulfur found naturally in the body, Methylsufonlymethane (MSM) is important in the formation of collagen in joints**.Vitamin D3 helps maintain healthy levels of Calcium and Magnesium, important minerals that support strong bones. Because joints receive their essential nutrients through their adjoining bones, healthy bones are key for healthy joints.**Contains 80 tablets. 40 servings per container. Manufactured by: Schiff