Pentosan Polysulfate is a veterinary medical device designed to temporarily coat and replenish the glycosaminoglycan (GAG) layer in the urinary bladder. Glycosaminoglycans provide a barrier against agents present in the urine. Reduction in the GAG layer may affect the function of the barrier and allow penetration of agents present in the urine. The glycosaminoglycan layer of the bladder may be deficient in certain types of cystitis. Pentosan Polysulfate is designed to coat the urinary bladder in these instances. For use in cats, dogs, and horses. Pentosan Polysulfate is a sterile 6 mL solution containing 1,500 mg per vial (250 mg/mL).