Key benefits: Contains OPTIRENAL, a unique formulation to promote healthy kidneys. OPTIRENAL is a scientifically designed combination of ingredients including amino acids, essential fatty acids and antioxidants. Healthy joints and good mobility due to a high level of protein which nourishes your cat's muscles and helps him stay a healthy weight and in lean condition. Silky and glossy coat with omega 3 and 6 fatty acids and other essential nutrients - like vitamin E, zinc and copper - to nourish the skin and coat Supports a healthy immune system through high levels of antioxidant vitamins, including vitamins C and E. Helps protect teeth from plaque and tartar build-up due to a crunchy kibble texture and special minerals which are proven to significantly reduce tartar build-up.