Nutramax Cosequin ASU Joint Health Supplement for Horses - Powder with Glucosamine, Chondroitin, ASU, and MSM, 500 Grams - Joint Health Support for Horses: Cosequin is the #1 veterinarian recommended joint health supplement brand*. This supplement is formulated with glucosamine, chondroitin sulfate, methylsulfonylmethane (MSM), and avocado/soybean unsaponifiables (ASU) to support joint health - Powered by ASU: The combination of ASU, glucosamine, and chondroitin found in Cosequin ASU has been shown to be more effective supporting joint health than either glucosamine or chondroitin sulfate alone in cell culture studies - High Quality Ingredients: Avocado/soybean unsaponifiables, or ASU, is derived from avocados and soybeans. Studies using cartilage cells have shown that ASU inhibits the expression of several components involved in the process of cartilage breakdown in joints - Formulated for Your Horse: ASU complements the positive effects of the glucosamine and chondroitin sulfate in Cosequin ASU, providing broad spectrum joint support for the equine athlete - Backed by Science: Nutramax Laboratories Veterinary Sciences supplements are veterinarian formulated with high-quality ingredients to support your horses joint health, no matter their discipline or performance level