We've helped over 1 million dogs and thrive on keeping dogs active with tasty chews developed by leading veterinarians and scientists. Includes: Glucosamine HCI 750mg, Green Lipped Mussel 450mg, Asorbic Acid Vitamin C 37.5mg, Manganese Sulfate 9mg, Hyaluronic Acid 4.5mg, D-Alpha Tocopherol Vitamin E 1.5mg.