ROYAL CANIN HEPATIC loaf is a complete dietetic feed for dogs formulated to support liver function in the case of chronic liver insufficiency and for the reduction of copper in the liver. High-quality protein. Moderate level of protein. High levels of essential fatty acids and highly digestible carbohydrates. Restricted level of copper.  The Royal Canin veterinary diet Hepatic dog food is prepared with a blend of ingredients that help promote liver health in your canine companion. The nutrient-rich formula contains vitamins and minerals for a healthy, beneficial meal.