Help your cats feel their best as they age with IAMS PROACTIVE HEALTH Healthy Senior Dry Cat Food with Chicken. This nutrient-rich senior cat food was designed with chicken as the #1 ingredient to support strong muscles in indoor and outdoor cats 11 years and older. This senior cat kibble is formulated with essential nutrients, including calcium and phosphorus, to help promote optimal health and nourish strong bones and joints in mature cats. It also provides vitamin E and antioxidants to support your aging kitty’s immune system and support your cat’s ongoing vitality as they mature. Plus, this recipe contains L-carnitine to help your kitty maintain a healthy weight, and the crunchy kibble texture helps reduce plaque buildup