Hill's Prescription Diet i/d Dog Food with ChickenHill's PRESCRIPTION DIET i d Dog Food with Chicken Hill's Prescription Diet i d Dry Dog Food is great tasting nutrition clinically proven to help reduce digestive upsets. This highly digestible food is enriched with electolytes and B vitamins to ensure easy nutrient absorption and replace lost nurients. Made with Hill's proprietary ActivBiome+ ingredient technology, a special blend of prebiotic Fibres, clinically shown to rapidly nourish the gut