Iams Proactive Health Large Breed Adult Dry Dog Food with Real Chicken delivers complete and balanced nutrition designed specifically for your large breed dog. Real chicken is the first ingredient, and this recipe is packed with tasty protein from chicken and eggs to support firm, strong muscles. Seven essential nutrients promote heart health, and antioxidants help support your best friend’s immune health. Plus, natural sources of glucosamine and chondroitin support your large breed dog’s bones and joints.