Iams Premium Protection Mature Adult Dry Dog Food, 11 lbs(Pack of 2) High levels of protein for muscle maintenance for older dogs 2x the antioxidants Beta-Carotene and Vitamin E* to help boost the immune system of your older dog to healthy adult levels *vs. Iams ProActive Health Minichunk Iams Daily Dental Care for up to 55 percent less tartar build-up