Pro Plan Adult combines all essential nutrients including vitamins A, C and E, also omega 3 & 6 fatty acids and a natural prebiotic in a high quality diet for cats. Optirenal is a scientifically designed combination of ingredients including amino acids, essential fatty acids and antioxidants. Cats between 1 and 7 are in the prime of their lives, and require nutrition designed to help maintain their general well-being. Some cats, especially as they age, may experience problems with their kidney function which can, among other things, lead to a build up of waste products and other toxins. Pro Plan optirenal helps support cats’ kidney function supporting long lasting, healthy kidneys Key Benefits Life long kidney and urinary tract support Contains essential fatty acids and antioxidants Nutrition designed for their prime Contains natural pre-biotics