Acti-Flex by Cox labs has an advanced, fast-acting, liquid formula of Glucosamine, Chondroitin, MSM, and Superoxide Dismutase. In Acti-Flex key ingredients work together to improve performance by increasing the horse's supply of naturally occurring joint-lubricating synovial fluid, which repairs and strengthens stressed body parts. It works with remarkable speed, making notable improvement within 5 days. The gallon size provides up to a 128 day supply for one horse. Guaranteed Analysis Per oz: Glucosamine Sulfate 8,000 mg. Chondroitin Sulfate 4,000 mg. MSM 3,000 mg. Ester C (Ascorbic Acid) 1,000 mg. Yucca 150 mg. Hyaluronic Acid (HA) 125 mg. Please Note: Cox Veterinary Laboratory, Inc products cannot be shipped outside of the contiguous United States. No longer contains Type II Collagen