The most important thing to do when you’re vomiting is to stop eating, rest your stomach, and then slowly reintroduce small amounts of fluid. Most vomiting episodes resolve on their own within 12 to 24 hours, but how you manage fluids during that window makes a big difference in how quickly you recover and whether you end up dehydrated.
Rest Your Stomach First
After your last vomiting episode, avoid eating or drinking anything for a short period to let your stomach settle. Research on patients admitted with acute vomiting found that waiting 4 to 6 hours before reintroducing food had the lowest rate of refeeding failure, at just 3.7%. You don’t necessarily need to wait that long for clear fluids, but giving yourself at least 1 to 2 hours of rest before sipping anything is a reasonable starting point.
During this time, lie on your side or sit upright rather than lying flat on your back. If you feel another wave of nausea, breathing slowly through your nose can help. Avoid strong smells, screens, and movement as much as possible.
How to Start Drinking Again
The biggest mistake people make after vomiting is gulping down a full glass of water the moment they feel better. Your stomach isn’t ready for that. Start with 5 milliliters (about one teaspoon) every 5 minutes and increase gradually as tolerated. If that stays down for 30 to 60 minutes, you can slowly increase the volume.
The best fluids to start with are water, oral rehydration solutions (like Pedialyte or store-brand equivalents), clear broth, or diluted apple juice. Oral rehydration solutions are ideal because they replace both the water and the electrolytes you lost. Sports drinks work in a pinch, though they contain more sugar than is ideal. Avoid milk, coffee, alcohol, and anything carbonated until you’re keeping plain fluids down consistently.
What to Eat Once Fluids Stay Down
You’ve probably heard of the BRAT diet: bananas, rice, applesauce, and toast. It’s fine for the first day or two, but there’s no reason to limit yourself to just those four foods. Brothy soups, oatmeal, boiled potatoes, crackers, and unsweetened dry cereals are equally easy on your stomach.
Once things settle further, add foods with more nutritional value: cooked squash, carrots, sweet potatoes without the skin, avocado, skinless chicken or turkey, fish, and eggs. These are still bland and easy to digest but give your body the protein and nutrients it needs to recover. Avoid greasy, spicy, or heavily seasoned foods for at least a day or two after your last episode.
Spotting Dehydration Early
Dehydration is the main risk with repeated vomiting, especially in young children and older adults. The signs to watch for include dry or cracked lips, dark yellow urine, urinating much less than usual, feeling dizzy or lightheaded when you stand up, and excessive thirst. In children, the most reliable physical signs are slow skin turgor (when you gently pinch the skin on the back of the hand or belly, it takes longer than usual to flatten back down) and delayed capillary refill (pressing a fingernail and seeing color take more than 2 seconds to return).
Mild dehydration can be corrected at home with steady sipping. If you or your child can’t keep even small sips down for several hours, or if you notice sunken eyes, cool or mottled limbs, or extreme lethargy, that’s moderate to severe dehydration and needs medical attention.
Helping a Child Who Is Vomiting
Children dehydrate faster than adults, so fluid replacement needs to start earlier and more deliberately. For babies 6 to 12 months old, offer about 5 mL (one teaspoon) of an oral rehydration solution every 5 minutes. For toddlers ages 1 to 3, increase to 10 mL (two teaspoons) every 5 minutes. Children older than 3 can handle 15 mL (one tablespoon) every 5 minutes. A small oral syringe makes it much easier to measure and deliver these amounts.
If your child tolerates these volumes for 30 to 60 minutes, you can double the amount per dose. Breastfed infants should continue nursing in shorter, more frequent sessions. For formula-fed babies, stick with the oral rehydration solution initially, then return to regular formula once vomiting has stopped for a few hours.
Over-the-Counter Medications
Several antihistamine-based medications can help reduce nausea and vomiting. Dimenhydrinate (sold as Dramamine) and meclizine (sold as Bonine) are available without a prescription and work particularly well for motion sickness and vertigo-related nausea. Diphenhydramine (Benadryl) also has anti-nausea effects, though drowsiness is a common side effect with all of these.
If you’re pregnant, don’t take any anti-nausea medication without talking to your provider first. The combination of doxylamine and vitamin B6 is considered the first-line treatment for pregnancy-related nausea and vomiting, but dosing should be guided by your doctor.
Ginger as a Natural Option
Ginger has real evidence behind it for reducing nausea, though results vary depending on the cause. Clinical trials suggest that taking 1 gram or more of ginger daily for at least 3 days can help reduce the frequency of acute vomiting. You can get this from ginger capsules, fresh ginger steeped in hot water, or even ginger chews. It won’t stop active vomiting in the moment, but it may shorten the course and reduce how often episodes occur.
Common Causes of Vomiting
Most acute vomiting in otherwise healthy people comes from a handful of sources: viral gastroenteritis (the “stomach bug”), food poisoning, motion sickness, migraines, or medication side effects. Antibiotics, aspirin, anti-inflammatory painkillers, and oral contraceptives are all known triggers. Alcohol is another obvious one.
Less common but more serious causes include appendicitis, gallstones, pancreatitis, intestinal obstruction, and head injuries. Pregnancy is worth considering in anyone of reproductive age, since morning sickness affects the majority of pregnant women. When pregnancy-related vomiting becomes severe enough to cause more than 5% body weight loss, persistent vomiting more than three times per day, and signs of significant dehydration, it crosses into a condition called hyperemesis gravidarum, which affects roughly 1% of pregnancies and typically requires medical treatment.
When Vomiting Needs Emergency Care
Most vomiting passes on its own, but certain warning signs mean you should get to an emergency room:
- Blood in vomit, or vomit that looks like coffee grounds or is bright green
- Chest pain or severe abdominal pain alongside vomiting
- Confusion, blurred vision, or a stiff neck with fever, which can indicate a neurological emergency
- Signs of severe dehydration that aren’t improving with oral fluids: dizziness on standing, no urination for 8 or more hours, extreme weakness
- Fecal odor or material in the vomit, which can signal a bowel obstruction
For timing: adults should see a doctor if vomiting lasts more than two days. For children under age 2, the threshold is 24 hours. For infants, it’s 12 hours. If you’ve had recurring episodes of nausea and vomiting lasting longer than a month, or unexplained weight loss alongside vomiting, schedule an appointment even if individual episodes seem mild.