This is a PAW Osteocare 500g 100 Chews Joint Health Chews for Dogs Blackmores. Each PAW Osteocare chew contains: 500 mg Glucosamine Sulfate: to provide cartilage nutrition for joint cartilage health and joint function. 250 mg Chondroitin Sulfate: is a major component of joint cartilage and is required for cartilage and joint health. Balanced combination of other nutrients for joint health: PAW Osteocare chews also contains other ingredients such as MSM and a balanced blend of vitamins and minerals that work together to maintain the health of your dog’s joints. Highly palatable chew: A tasty kangaroo based chew that is easy to give to your pet on a daily basis.