Royal Canin Veterinary Diets Urinary SO Moderate Calorie Cat Food is a complete dietetic feed for cats. Its urine acidifying properties and its low level of magnesium make it suitable for dissolving struvite stones and reducing their recurrence. It is also formulated for the nutritional management of cats with lower urinary tract disease. Its moderate calorie content makes it particularly suitable for cats in which ideal weight is hard to maintain (neutering / overweight / low activity).ROYAL CANIN Urinary S/O Moderate Calorie is formulated with the needs of cats with urinary sensitivities in mind. ROYAL CANIN Urinary S/O Moderate Calorie helps to dissolve all types of struvite stones in your cats bladder. ROYAL CANIN Urinary S/O Moderate Calorie has a reduced calorie content to help your cat maintain an ideal body weight. When diluted, your cats urine is less liable to form struvite and calcium oxalate stones. Thats why ROYAL CANIN Urinary S/O Moderate Calorie helps to support urine d