When cats have damage to kidney tissues, the kidneys cannot perform as well as before, like filtering and reabsorbing nutrients. The condition is not reversible, but progression may be slowed. Therapeutic foods for kidney conditions are designed to help reduce workload on the kidneys, enabling them to function more effectively. Cats with decreased kidney function may experience loss of appetite and their food intake might decline. Hill's nutritionists and veterinarians developed Hill's Prescription Diet k/d clinical nutrition with ActivBiome+ Kidney Defense, a proprietary blend of prebiotics shown to activate the gut microbiome to help protect kidney function. Prescription Diet k/d is available in multiple wet forms & flavors to entice even the pickiest of eaters. This variety pack has two irresistible and delicious stew flavors - Chicken & Vegetable Stew and Vegetable & Tuna Stew. In fact, Prescription Diet k/d has clinically proven nutrition to improve & lengthen quality of life.