Arthogen for Dogs is scientifically formulated with a special pet friendly blend of Glucosamine HCl & Chondroitin Sulfate. It also contains a comprehensive, nutritious and highly effective solution that provides the necessary nutrients needed for your pet’s health, coupled with a beef and cheese flavor that dogs love. Active Ingredients: Glucosamine HCI (500mg), Chondroitin Sulfate (400mg), Vitamin C (33mg), Manganese (5mg)