Skin/Food Sensitivities Food sensitivities and intolerance are potentially serious problems that can result in sensitive or irritated skin, coat and ear conditions or even gastrointestinal upset. Dogs that have a food sensitivities or intolerance, also called adverse reactions to food, typically experience an abnormal response to the protein in the food. If your dog suffers from adverse reaction to food, it is even more important to feed the right food. Hill #39;s nutritionists amp; veterinarians developed Hill #39;s Prescription Diet z/d clinical nutrition especially formulated to support your dogs skin and food sensitivities. In fact, z/d is clinically proven nutrition to help avoid adverse reactions to food. How It Works: Highly hydrolysed protein Single carbohydrate source: Corn Starch Essential fatty acid enriched Clinically proven antioxidants How It Helps: Helps improve digestion amp; stool quality Helps eliminate food related causes of skin irritation Visible improvement in skin amp; coat Helps maintain a healthy skin barrier