The IAMS ProActive Health Senior Plus Dry Dog Food is a high-quality, mature adult dog food that is designed to provide your dog with a healthy and balanced diet. This food is made with real chicken as the first ingredient and includes glucosamine and chondroitin sulfate to help maintain healthy bones and joints. The IAMS ProActive Health Senior Plus Dry Dog Food also includes antioxidants to support a strong immune system and a blend of fiber and prebiotics to help maintain healthy digestion.