Purina ONEâ??s SmartBlend Chicken & rice formula features real chicken as the first ingredient, blended with other high-quality protein sources to help support strong muscles and a healthy heart. Chicken is tastefully rich in protein and blends well with grains and other ingredients to create a complete protein profile. A dual defense antioxidant blend of vitamins E and A joins forces with zinc and selenium to promote a healthy immune system and a radiant coat. By choosing smart ingredients that work together, SmartBlend provides a 100% complete diet and helps support your dog's whole body health.