Improve your dog’s ability to run, walk, and jump with Hill’s Prescription Diet j/d Dry Dog Food. This specialized nutrition is a “tasty and healthy reward” clinically proven to enhance mobility in as little as 21 days. Formulated to help your pet “be healthy,” it is enriched with Omega-3 fatty acids, glucosamine, and chondroitin sulfate to preserve joint cartilage and support a more active, happy life.