Canine z/d ULTRA Allergen-Free For the Nutritional Management of Pets with Food Allergy and Intolerance Food allergy and intolerance can be mild to severe and may include painful problems with the skin, ears and digestive tract. These responses, also known as adverse reactions to food, are ususally a response to protein in the food. Prescription Diet Canine z/d ULTRA Allergen Free was designed by veterinarians for extreme cases of food allergy and intolerance. It has been exclusively formulated with Hill's Hydrolyzed Protein System, a unique protein that helps eliminate the possibility of an adverse reaction to food. Most reactions occur because of an allergy to beef, dairy products or wheat. Canine z/d ULTRA Allergen Free contains none of these. This product is considered the "Gold Standard" by veterinarians at Hill's to provide the ultimate food in eliminating the chance of adverse food reactions or allercies in dogs. ONLY AVAILABLE IN AUSTRALIA - QLD, NSW, VIC AND ACT