Wholistic Canine Complete Joint Mobility (4 lbs Tub) is an organic, human-grade animal health supplement that provides concentrated joint support for Total Body Health™. The Highest Quality Ingredients, together in one Unique Blend, Wholistic Canine Complete Joint Mobility™ is based on a unique blend of pure, premium ingredients including: Chondroitin?provides potent support for damaged joints. (We use chondroitin derived from shark cartilage, not bovine cartilage because it allows healing to occur, while helping to prevent calcification in joints.) Glucosamine?a natural building block of cartilage that is used in the rebuilding process of cartilage MSM?helps maintain normal, healthy connective tissue in joints; helps control symptoms of joint discomfort Patented Ester C®?the most effective, Body?Ready™ form of Vitamin C, which research has shown to be a necessary and vital component of cartilage formation; powerful antioxidant. Digest All Plus™ enzyme complex?aids in maintaining normal, healthy joint function.