Founded by a veterinarian, Royal Canin has over 40 years experience in Health Nutrition. Our work with pet nutritionists, breeders and veterinarians from around the world has provided us with knowledge about the specific nutritional requirements of dogs. This knowledge has allowed us to formulate the precise diet for your dog's special needs. Selected Protein: The protein in the diet is provided by potato, duck, and hydrolyzed soy, which are rarely associated with adverse food reactions in dogs. EPA and DHA: Eicosapentaenoic and docosahexaenoic acids are long chair omega-3 fatty acids that promote a healthy skin and coat. Skin Barrier: Optimal amount of B vitamins and amino acids help maintain the skin's natural barrier effect. Natural Preservative: Naturally preserved to ensure freshness and quality. Royal Canin Veterinary Diet Canine Selected Protein Adult PD dry is a complete and balanced, selected protein diet for dogs that is formulated to assist in the nutritional management of adverse food reactions with dermatologic or gastrointestinal signs. Royal Canin Veterinary Diet Canine Selected Protein Adult PD dry is formulated to meet the nutritional levels established by the AAFCO Dog Food Nutrient Profiles for growth and maintenance. Veterinary Exclusive Selected Protein Skin Barrier EPA & DHA Natural Preservative