Don't be too quick to write off your dog's stiffness and mobility issues as simply a by-product of age or breed. Hills Prescription Diet j/d Mobility Joint Care Dry Dog Food has been clinically proven to improve walking, running and jumping ability in as little as three weeks. That should tell you how important diet is to your dog's joint health. Hill's knows that the right combination of omega 3 fatty acids and EPA helps support your dog's cartilage, while a moderate calorie content and L-Carnitine helps him maintain a healthy weight, which reduces stress on joints. By keeping one eye on your dog's nutrition and the other on his joint health, Hills Prescription Diet j/d Mobility Joint Care Dry Dog Food formula is a complete and balanced diet for your dog. Product details Clinically proven to improve walking, running and jumping ability in as little as 3 weeks omega 3 fatty acids and EPA supports cartilage moderate calorie content and L-Carnitine helps maintain healthy weight complete and balanced diet.