Active Ingredients per Chewable:Glucosamine Hydrochloride (from shellfish) – 500 mgChondroitin Sulfate (porcine trachea) – 200 mgMethysulfonylmethane (MSM) – 50 mgAscorbic Acid (Vitamin C) – 50 mgZinc (Zinc Oxide) – 15 mgHyaluronic Acid – 6 mgManganese (Manganese Gluconate) – 5 mgCopper (Copper Gluconate) – 2 mgInactive ingredients:Brewers Dried Yeast, Cellulose, Liver Meal, Magnesium Stearate, Natural Flavor, Silicon Dioxide, Stearic Acid.