Adequan® i.m. (polysulfated glycosaminoglycan), the only product approved by the FDA for the intramuscular treatment of non-infectious degenerative and/or traumatic joint dysfunction and associated lameness of the carpal and hock joints in horses, has been a great help to the horse industry. For the past 25 years and counting, veterinarians have depended on Adequan® for the treatment of degenerative joint disease in horses.