Kidneys role is to filter waste and toxins from the blood, and maintain the normal balance of fluid and minerals within the body. As pets are getting older, damage to kidney tissues may occur. This process is irreversible, and will lead to further loss of kidney function. Renal dogs may also experience loss of appetite and their caloric intake might decline, which may lead eventually to loss of muscle mass. Hill's nutritionists and veterinarians developed Prescription Diet® k/d®, clinical nutrition to support your dog's kidney health. In fact, The nutrition of Prescription Diet® k/d® is clinically proven to improve & lengthen quality of life. •Protects vital kidney & heart function •Boosts vitality & energy •Supports your dog's natural ability to build lean muscle daily INGREDIENTS: Water, Beef, Carrots, Pork Liver, Rice, Chicken Fat, Rice Starch, Dextrose, Green Peas, Sugar, Hydrolyzed Chicken Flavor, Powdered Cellulose, Fish Oil, Dried Beet Pulp, Flaxseed, Egg Whites, Potassium Alginate, Caramel color, Calcium Lactate, Calcium Gluconate, Natural Flavor, Potassium Citrate, Brewers Dried Yeast, Choline Chloride, Guar Gum, Betaine, Soybean Oil, Whole Grain Oats, vitamins (Vitamin E Supplement, Thiamine Mononitrate, Ascorbic Acid (source of Vitamin C), Niacin Supplement, Vitamin A Supplement, Calcium Pantothenate, Vitamin B12 Supplement, Pyridoxine Hydrochloride, Riboflavin Supplement, Biotin, Menadione Sodium Bisulfite Complex (source of Vitamin K), Folic Acid, Vitamin D3 Supplement), L-Lysine, Fructooligosaccharides (FOS), Calcium Chloride, Dicalcium Phosphate, Monosodium Phosphate, Magnesium Oxide, L-Arginine, L-Threonine, Taurine, minerals (Ferrous Sulfate, Zinc Oxide, Copper Sulfate, Manganese Sulfate, Calcium Iodate), L-Tryptophan, L-Carnitine, Beta-Carotene, Calcium Carbonate. 157 kcal / 5.5 oz (156 g) can Nutrient Dry Matter% Protein 15.9 % Fat 23.8 % Carbohydrate / NFE 52.5 % Crude Fiber 3.5 % Calcium 0.77 % Phosphorus 0.3 % Potassium 0.93 % Sodium 0.17 % Magnesium 0.136 % Vitamin C 175 ppm Vitamin E 812 IU/kg Total Omega-3 FA 1.33 % *The nutrient in the product after moisture is removed. It is used to make direct comparisons of nutrient profiles with differing moisture contents.