Hill's Prescription Diet Canine r / d Weight Reduction Main benefits Clinically proven nutrition that can transform your pet's life. Prescription Diet (TM) Canine r / d (TM) has been specifically formulated for the management of weight problems in dogs. Scientifically proven it reduces body fat by 22% in 8 weeks. Low fat and calories, promotes weight loss. Integrated with L-carnitine and lysine to burn fat and maintain muscle. High levels of dietary fiber to reduce hunger and discourage continued demand for food. A new great taste that your dog will love. Please consult your vet for any further information and advice on what is best for your dog.