Royal Canin Canine Urinary Moderate Calorie is a diet which helps to dissolve mineral stones which can be found in the bladder and kidneys of cats and dogs. Overweight dogs have double the risk of developing mineral stones than dogs at their ideal weight so Canine Urinary Moderate Calorie tackles the problems caused by Lower Urinary Tract Disease while allowing for controlled weight loss and weight management. The diet is specially formulated to increase urine volume and increase the acidity of the urine produced. This helps to dissolve stones that are already present and to reduce reoccurrence of stones once the condition is under control. Royal Canin Urinary is a veterinary diet tailored for use in several clinical conditions relating to Lower Urinary Tract Disease and should be used under the guidance of your veterinary surgeon.