This Iams ProActive Healthy formula has PreBiotics that work inside the digestive tract to promote healthy digestion and strong defenses. Healthy inside. Healthy outside. Iams provides the wholesome, nutrient-rich goodness your cat needs to stay strong and active. Iams ProActive Health with Chicken helps maintain lean muscles and a healthy weight by providing the right amount of choice chicken baked into crunchy kibbles that keep teeth clean and tartar-free. It's also fortified with minerals for strong bones, taurine for healthy heart and eyes, and rich in fish oils for a sleek and shiny coat. Plus, it has a gentle fiber to support your cat's ability to absorb nutrients.