Adverse reaction to food. Formulated with Hill's Hydrolyzed Protein System™, highly digestible proteins that minimize the chances of allergic reactions to food A single, highly digestible carbohydrate source to help avoid common food allergens Highly digestible carbohydrates and fats to help reduce gastrointestinal workload Increased omega 3 and 6 Fatty Acids to help nourish the skin Added antioxidants to help maintain a healthy immune system and skin barrier function