This weight management and mobility support large breed dog food was created with Hill's unique understanding of the biology of overweight dogs. It provides lean muscle support and also uses clinically proven antioxidants for a healthy immune system. Over 70% of dogs lost weight within 10 weeks (USA study). With added fish oil to provide EPA and Omega-3 to help support joint function for a mobile & active life, feed this breakthrough nutrition for your large breed dog's healthy weight maintenance, long-lasting weight support, and joint health.