The Purina Pro Plan Veterinary Diets DM Dietetic Management Feline Formula Wet Cat Food is designed to provide your cat with a healthy, balanced diet that will promote a urinary environment favorable to the development of both struvite and calcium oxalate crystals. The high protein content helps to maintain lean body mass and ideal body condition, while the low carbohydrate content helps to support healthy glucose levels. The food also contains antioxidants to protect against damage from free radicals.