Hill's Prescription Diet Metabolic Mobility, Weight Management Dog Food is specially formulated to reduce excessive body weight and support joint metabolism in adult dogs with osteoarthritis. It has a low energy density and is rich in EPA, total Omega-3 fatty acids, and vitamin E. Excess weight negatively impacts a dog's health, quality of life, mobility, and joint health. This diet has been proven to help dogs lose weight and improve mobility within 21 days. It offers complete and balanced nutrition for long-term use to maintain an ideal weight and active lifestyle.