Hill's Prescription Diet - Wet Cat Food - Feline k/d Kidney Care Canned with Chicken - 5.5OZ (min. 24 cans)Kidneys remove waste substances from the blood, and maintain the normal balance of fluid and minerals within the body. Once kidney damage occurs, the consequences are usually irreversible. Hill's nutritionists and veterinarians developed Prescription Diet k d, clinical nutrition to support your cat's kidney health. In fact, k d is clinically tested nutrition to improve & lengthen quality of life. How it works: Targeted levels of high quality protein