Founded by a veterinarian, Royal Canin has over 40 years experience in Health Nutrition. Our work with veterinarians, pet nutritionists, breeders and cat professionals from around the world has provided us with knowledge about the specific nutritional requirements of cats. This knowledge has allowed us to formulate the precise diet for your cat's special needs.Royal Canin Veterinary Diet products are specially formulated for use in a veterinary dietary management program.We recommend using Royal Canin Veterinary Diet diets only as directed by your veterinarian. Please note that an individual cat's needs may differ from the feeding instructions. freshpack: Nitrogen flushed to preserve food freshness and quality. Royal Canin Veterinary Diet Feline Renal Support S dry is a high energy and highly digestible diet for cats that has been formulated with low protein and low phosphorous levels. Aromatic Choice: Customized palatability profile designed for individual preferences. Veterinary Exclusive