Stay hydrated. There are no clear rules about when and what to eat after food poisoning or stomach bug symptoms (like vomiting and diarrhea) have subsided.
Every person reacts differently to food, or to the idea of eating again. It’s natural to temporarily lose your appetite when experiencing the stomach flu or food poisoning.
Medical experts do not recommend fasting or following a restricted diet when you have diarrhea.
Whenever your appetite does return, you can go back to eating, even if you still have diarrhea.
The most recommended foods to eat after the stomach flu, food poisoning or a regular stomachache are part of what’s known as the BRAT diet. BRAT stands for bananas, rice, applesauce, and toast. These foods are ideal because of their blandness and because they’re easy to digest.
This is to help your body restore its energy and to regain its lost fluids, nutrients, and electrolytes.