Food sensitivities and intolerances are potentially serious problems that can result in irritated skin, hair and ear, or even gastrointestinal disorders. Dogs that have an adverse reaction to food due to a food allergy (typically a protein in the food) or an intolerance benefit from food intended for food sensitivities. Hill’s nutritionists and veterinarians have developed Prescription Diet z/d Clinical Foods, specially formulated to help your dog manage their food sensitivities. In fact, z/d is a clinically proven food to reduce skin and digestive symptoms associated with food intolerances.