Pro Plan Cat Adult Optirenal Salmon and Rice is formed with a special blend of nutrients and a controlled PH formula which help support your cat?s kidney function. Pro Plan Cat Adult Optirenal Salmon and Rice contains highly digestible proteins and carbohydrates which mean that fewer indigested nutrients reach the lower intestinal tract resulting in good stool quality and a lowered faecal output. Skin and coat quality of your cat is also kept healthy by Pro Plan Cat Adult Optirenal Salmon and Rice with the addition of vitamin A linoleic acid zinc and marine oils. Pro Plan Cat Adult Optirenal Salmon and Rice is also proven to help you cat?s teeth and gums by reducing tartar build up by 40%.