This weight management and mobility support dry dog food was created with Hill's unique understanding of the biology of overweight adult dogs and their diet plan. It now provides lean muscle support, and also uses clinically proven antioxidants for a healthy immune system. Over 70% of dogs lost weight within 10 weeks. With added fish oil to provide EPA, an Omega-3, to help support joint function for a mobile & active life. Feed this breakthrough nutrition plan now for your adult dog's healthy joints & weight maintenance.