Each PAW Osteocare® chew contains 500 mg Glucosamine Sulfate to provide cartilage nutrition for joint cartilage health and joint function and 250 mg Chondroitin Sulfate, a major component of joint cartilage and is required for cartilage and joint health. PAW Osteocare® chews also contains other ingredients such as MSM, manganese gluconate and vitamin C that work together to maintain the health of your dog’s joints.