Hill's Prescription Diet k/d Dry Cat Food with ActivBiome+Kidney Defense is specially formulated by nutritionists and veterinarians to help manage chronic kidney disease, or CKD. A proprietary blend of prebiotics activates the gut microbiome to help reduce harmful waste products within the intestinal tract and slow down the progression of the disease. The thoughtful recipe also includes Hill's Enhanced Appetite Trigger to stimulate your cat's appetite and encourage healthy eating. In addition to high levels of essential amino acids and L-carnitine, increasing caloric intake can support your cat's natural ability to build muscle mass. This dry food is made with real ocean fish and has an irresistible taste that cats love.