Plain rice is useful for people with many types of stomach complaints. It can help by adding bulk to stool, absorbing fluids that may contain toxins, easing pain and cramps, because of its high levels of magnesium and potassium
Someone who is vomiting or has diarrhea could try slowly eating half a cup of plain, well-cooked rice. It is best to wait until at least a few hours after the last episode of vomiting. The person may continue to do this for 24–48 hours until diarrhea stops.