Description (3Kg)Hill's Prescription Diet z/d Dog Food is a complete dietetic pet food for reduction of ingredient and nutrient intolerances in adult dogs. This food contains a selected carbohydrate source and a hydrolyzed protein source. Composition Derivatives of vegetable origin, meat and animal derivatives, oils and fats (fish oil 0.9%), fruit, minerals, seeds. Carbohydrate source: Maize starch. Protein source: Chicken liver hydrolysate (26%).