Do not try to eat anything until you feel the vomiting has ceased.
When you do feel capable of eating, begin with clear liquids, such as water or bouillon. Begin by sipping a little at a time, waiting about ten minutes between sips. Gradually increase the amount you drink, and if you are able to tolerate it and have not vomited again after one or two hours, consume other clear liquids. Clear carbonated beverages, fruit juice, sport drinks, tea, and Popsicles™ are good choices.
Once clear liquids are tolerated, begin adding other foods back into your diet. Select the same type of foods suggested for controlling nausea and eat small amounts frequently instead of large amounts at one time.
If vomiting ceases after following the preceding tips, you should be able to resume your regular diet.