For the Nutritional Management of Dogs with a range of inflammatory skin conditions and Food Allergy and Intolerance. The nutritional formulation of Prescription Diet d/d dog food includes enhanced levels of Omega-3 fatty acids and antioxidants, which have been shown to be useful for pets with a variety of inflammatory skin conditions that are often associated with excessive itching, scratching and licking. Food allergy and intolerance may result in numerous skin and stomach problems that can cause discomfort and pain in your dog. This condition, also known as an adverse reaction to food, is usually an abnormal response to the protein found in many pet foods. Prescription Diet d/d comes with novel protein sources (new to your dog) to help manage adverse reactions to food. Commonly, reactions occur as a result of beef, dairy products and wheat. Prescription Diet d/d foods contain none of these allergens.