Royal Canin Urinary SO Moderate Calorie for cats is a complete and balanced diet used for cats with or at risk of developing feline lower urinary tract disease and predisposed to weight gain to help dissolve pure struvite uroliths and help prevent struvite urolithiasis calcium oxalate urolithiasis and calcium phosphate brushite urolithiasis This diet promotes a urinary environment unfavorable to the development of both struvite and calcium oxalate crystals Moderate acid load encourages production of urine with a pH between 6063 Increased sodium chloride content to increase thirst and promote formation of a dilute urine Moderately restricted magnesium and phosphorus levels Controlled levels of calcium and oxalate Increased levels of potOther products from PetCareRx