Your cat’s digestive health can be negatively affected by many things and when your cat has digestive upset, it’s a thoroughly unpleasant experience for everyone involved. The good news is that you can help your cat feel better with a food that is formulated to provide the digestive care they need.Hill’s® nutritionists and veterinarians developed Prescription Diet® i/d®, nutrition specially formulated to help improve digestion and stool quality in cats.