Formulated with high quality protein to help your cat maintain strong muscles.. 7 essential nutrients for healthy heart.. Enriched with antioxidants to help develop a strong immune system.. Tailored fiber blend, including prebiotics and beet pulp to support your cat digestive health. IAMS® ProActive Health Healthy Adult Original with Chicken cat food has PreBiotics that work inside the digestive tract to promote healthy digestion and strong defenses. Healthy inside. Healthy outside | Iams Adult ProActive Cat Food - Chicken Size 35lbs