If you keep throwing up, the most important thing to do right now is stop eating, rest your stomach, and focus on preventing dehydration with small, frequent sips of fluid. Most vomiting episodes resolve on their own within 12 to 48 hours, but persistent vomiting can become dangerous when your body loses too much water and electrolytes. Here’s how to manage it at home and how to recognize when you need medical help.
Give Your Stomach a Break First
Right after vomiting, resist the urge to drink a full glass of water or eat anything. Your stomach needs a short grace period of one to two hours with nothing going in. Lying down in a dark, quiet room during this time helps, since light, noise, and strong smells can all trigger another round of nausea. If you can, sleep. Rest is one of the most effective things you can do while your body fights off whatever is causing the vomiting.
Lie on your side rather than flat on your back. This prevents you from inhaling vomit if you throw up again while drowsy or asleep.
How to Rehydrate Without Triggering More Vomiting
Dehydration is the real danger with repeated vomiting. Once you’ve rested for an hour or two, start by sucking on ice chips or taking very small sips of water every 15 minutes. The key is tiny amounts at a time. Flooding your stomach with a big gulp of liquid will often send it right back up.
Once your body proves it can handle plain water for an hour or so, you can introduce other clear fluids: clear broth, watered-down electrolyte drinks, ice pops, or gelatin. Electrolyte drinks are especially useful because vomiting depletes sodium and potassium along with water. Avoid anything acidic like orange juice, anything caffeinated, and anything carbonated until you’ve gone several hours without vomiting.
Recognizing Dehydration Early
Mild dehydration shows up as thirst, a dry mouth, and feeling more tired than usual. At this stage, careful sipping can still reverse things at home. Moderate dehydration brings dizziness or lightheadedness when you stand up, a noticeably faster heartbeat, and darker urine. Severe dehydration causes confusion, lethargy, cool or clammy skin, and very little urine output. If you notice signs beyond mild thirst and dry mouth, especially dizziness when standing, that’s a signal to get help.
For infants, watch diaper output closely. Fewer than six wet diapers in a day signals dehydration. If a baby is down to only one or two wet diapers in 24 hours, or you notice a sunken soft spot on their head, that’s serious.
When to Go to the Emergency Room
Most vomiting is caused by something temporary: a stomach virus (gastroenteritis is the single most common cause), food that didn’t agree with you, a medication side effect, or motion sickness triggered through the balance organs in your inner ear. These usually pass without medical intervention.
However, some warning signs mean you need emergency care immediately:
- Blood in your vomit, or vomit that looks like dark coffee grounds
- Green vomit, which can indicate bile and a possible bowel obstruction
- Vomit that smells like stool, another sign of intestinal blockage
- Chest pain or severe abdominal pain alongside vomiting
- High fever with a stiff neck, which can point to meningitis
- Confusion, blurred vision, or altered consciousness
You should also get to an urgent care or ER if you’re showing clear signs of moderate to severe dehydration: dark urine, dizziness when you stand, weakness, or infrequent urination. A severe headache alongside vomiting, especially one unlike any headache you’ve had before, also warrants a visit.
For adults, vomiting that lasts more than two days needs medical evaluation. For children under two, the threshold is 24 hours. For infants, it’s 12 hours. And if you’ve been experiencing recurring bouts of nausea and vomiting over a month or longer, or you’ve noticed unexplained weight loss, schedule an appointment with your doctor even if each individual episode seems to resolve.
Over-the-Counter Options
Bismuth subsalicylate (the active ingredient in Pepto-Bismol) can help settle an upset stomach for adults and children 12 and older. Follow the dosing instructions on the package carefully. However, skip it if you have an aspirin allergy, since it contains a related compound. It also interacts with blood thinners, diabetes medications, and arthritis drugs, so check with a pharmacist if you take any of those. Pregnant or breastfeeding women should ask a doctor before using it. Don’t give it to children or teenagers with flu-like symptoms, as it carries a small risk of a rare but serious condition.
Antihistamine-based motion sickness medications (like dimenhydrinate or meclizine) can help if your vomiting is related to motion or inner-ear disturbance. These work by calming the signals between your inner ear’s balance system and the vomiting center in your brain.
What to Eat After Vomiting Stops
Once you’ve kept down clear liquids for a few hours and your appetite starts to return, ease back in with small amounts of bland food. Good first choices include plain toast, crackers, bananas, applesauce, and plain oatmeal. These are gentle on an irritated stomach and unlikely to trigger another episode.
Avoid greasy, spicy, or heavily seasoned food for at least 24 hours after your last episode. Dairy can also be hard to tolerate right away. Eat small portions, and if something doesn’t sit well, go back to clear liquids for another hour or two before trying again. Your stomach lining may be inflamed, so think of this as a gradual re-introduction rather than a return to normal meals.
Special Considerations for Children
Children dehydrate faster than adults, so fluid replacement is even more critical. Offer small sips of an oral rehydration solution (available at any pharmacy) rather than plain water, since it replaces lost electrolytes more effectively. Avoid giving fruit juice or sugary drinks, which can worsen diarrhea if it accompanies the vomiting.
Watch for these signs that a child needs medical attention: no tears when crying, a dry mouth with no saliva, unusual drowsiness or irritability, sunken eyes, or the sunken soft spot mentioned earlier for infants. Children tend to bounce back quickly from stomach bugs, but they can also decline quickly if fluids aren’t replaced.
Preventing Vomiting From Coming Back
If your vomiting was caused by a stomach virus, it will typically run its course within one to three days. During recovery, get as much sleep as possible, keep your environment cool and free of strong odors (cooking smells are a common trigger for lingering nausea), and avoid alcohol entirely. If you suspect a medication is causing the vomiting, don’t stop taking it on your own, but call the prescribing doctor to discuss alternatives or timing adjustments.
For people who experience recurring vomiting episodes, identifying triggers matters. Common ones include specific foods, stress, lack of sleep, and hormonal changes. Keeping a simple log of what you ate, how you slept, and your stress level in the hours before an episode can reveal patterns that aren’t obvious in the moment.