TRI-ACTA H.A. adds Hyaluronic Acid to our popular TRI-ACTA formula to give your horse even greater results. Combined with Glucosamine, MSM and Chondroitin Sulphate, TRI-ACTA H.A. is a comprehensive joint supplement helping to ensure sound joint function. Hyaluronic Acid has been independently shown to help inflammatory and degenerative joint changes in horses. Tri-Acta H.A. is an excellent, long-term support formula for more intensive joint problems, such as arthritis or physical injury or for equine athletes under a more intense or heavier workload.