IAMS ProActive Health Adult Dog Food for Large Dogs is veterinarian recommended and made with real ingredients. Our recipe starts with farm-raised chicken and includes wholesome grains and veggies. It’s formulated with glucosamine and chondroitin sulfate for healthy joints. Plus, our quality, easily digestible ingredients provide your dog with a strong immune system; healthy skin, coat, and metabolism; and strong bones. Look for the IAMS difference.