Royal Canin Veterinary - Urinary S/O Moderate Calorie is a complete dietetic wet food with a moderate calorie content, specially formulated for overweight or obese cats. Cats that have a tendency to gain weight or are currently overweight frequently suffer from lower urinary tract diseases, so it is important to feed your cat a diet which provides support to their urinary system. Urinary tract disease can lead to urinary stones (including struvite and calcium oxalate uroliths) developing. Royal Canin Veterinary - Urinary S/O Moderate Calorie is specially formulated to treat cystitis and urinary stones in overweight or obese cats. This wet food is also suitable as a prophylaxis for cats with a sensitive urinary tract. The ingredients help to dissolve existing struvite crystals and also to dilute the urine. The moderate calorie content helps to prevent your cat from gaining excessive weight and instead maintain an ideal weight. General information: Please seek your vet's advice before us