Dogfood for a dog with a VERY sensitive stomach?

Hello, from my personal experience I would recommend Nutro's Natural Choice sensitive skin and stomach formulas with limited ingredients. The formulas come in Venison and Whole Brown Rice, and Herring Meal Rice and Potato. The 35 lb bag will be at the most about 45 dollars and within a few weeks if not days, you can see the results. It has less ingredients than other pet foods out there and is almost equivalent to a prescription dog food. You can find these foods at your local pet specialty stores.