If nausea is a problem in keeping food down, make sure you can keep liquids down for a while before you try eating any solid food. First try “clear liquids,” like chicken broth alone, then advance to “full liquids,” such as chicken noodle soup or smoothies. Next, try soft foods like mashed potatoes, and then finally a full general diet. When you feel well enough to try solid food and nausea is no longer an issue, only eat easily digestible foods a little bit at a time throughout the day.
Bananas can also help to replace some of the potassium that your body has lost from vomiting and/or diarrhea. [3] X Trustworthy Source FamilyDoctor. org Family-focused medical advice site run by the American Academy of Family Doctors Go to source
The recommended limit for ginger intake is no more than 4 grams of ginger a day. You should start with 1 gram a day in divided doses every 4 hours, if needed.
Use smaller portion sizes when you first start incorporating food into your diet again, especially if you haven’t eaten solid food in a few days. Sometimes it’s not the food itself but an amount that the stomach isn’t used to that can cause indigestion. You can usually resume your normal diet by 48 hours after vomiting or diarrhea.
If you have such bad nausea or vomiting that you are not only not able to eat food, but you also cannot keep down liquids, you need to go to the emergency room to be admitted to a hospital for IV fluids. You should receive IV fluids until you can tolerate liquids again.
