Product Details Cosequin ASU Horse Supplement goes above and beyond the traditional glucosamine/chondroitin sulfate products on the market with the addition of ASU (avocado/soybean unsaponifiables). ASU is obtained from avocados and soybeans. It is a potent ingredient demonstrated to help protect cartilage and support joint function in joint supplements for horses. Cosequin ASU is a multi-synergistic formula. The specific trademarked glucosamine and chondroitin sulfate have demonstrated synergy in stimulating the production of cartilage matrix components while ASU acts synergistically with both glucosamine and chondroitin sulfate for additional joint support. Further the combination of glucosamine and chondroitin sulfate plus ASU has been shown in cartilage cell studies to work better than the combination of glucosamine and chondroitin sulfate alone at inhibiting the expression of several agents involved in cartilage breakdown. These ingredients while working via their own mechanisms of action also work together as an equine supplement to deliver comprehensive joint health support. All in a tasty and easy-to-deliver powder! #1 Veterinarian recommended joint health supplement brand Broad spectrum joint support in a tasty equine powder supplement ASU complements the effects of glucosamine and chondroitin sulfate Helps protect cartilage and support joint function in joint supplements for horses