High-Calorie Dietary Supplement Why should I use Nutri-Cal for Cats? Nutri-Cal for Cats is veterinarian recommended to provide quality nutrition. It is extremely palatable and your cat will love it. How do I feed Nutri-Cal for Cats to my pet? Just place the recommended amount of gel on your finger, on the cat's paw, or mix with food and watch them eat. What does Nutri-Cal for Cats contain? Nutri-Cal for Cats contains Vitamin A, D, E, Phosphorus, Thiamine, Calcium, Manganese, Iodine, Potassium, Iron, Folic Acid, Riboflavin and other essential ingredients.