Purina Pro Plan Veterinary Diets EN Gastroenteric Feline Formulas are energy dense and support the unique nutritional needs of cats with GI conditions. Made with high-quality ingredients, these diets also support urinary health. The science behind our therapeutic diets represents a collaboration between Purina nutritionists, researchers and veterinarians. High total digestibility to promote nutrient absorption Energy-dense to provide essential nutrition in smaller meals Helps support the unique nutritional needs of cats with GI conditions St/Ox Defense: This diet promotes a urinary environment unfavorable to the development of both struvite and calcium oxalate crystals Added B-complex vitamins Contains omega-3 fatty acids from fish oil Great taste