TRI-ACTA H.A. is used for the treatment of joint, muscle, tendon and ligament soreness, including degenerative joint disease and various arthritic symptoms. Horses with significant pain and/or immobility or physical injury benefit from the addition of Hyaluronic Acid for even greater results. Tri-ACTA H.A. is also recommended as a preventative approach for optimal joint health for horses in competition or under a heavier workload.