After throwing up, your immediate priorities are protecting your teeth, resting your stomach, and slowly replacing lost fluids. Most vomiting episodes from stomach bugs, food poisoning, or overindulgence resolve on their own within 24 hours if you let your body recover properly. Here’s what to do, step by step.
Rinse Your Mouth, but Don’t Brush Yet
Stomach acid is harsh on tooth enamel, and your first instinct to grab a toothbrush can actually make things worse. Brushing right after vomiting scrubs that acid into softened enamel. Instead, swish water mixed with a small pinch of baking soda around your mouth to neutralize the acid, then spit it out. Wait at least 30 minutes before brushing your teeth.
Give Your Stomach a Break
Don’t eat or drink anything right away. Your stomach needs a short rest, typically a couple of hours, before you introduce fluids. Lying down during this time is fine, but if you’re drowsy or still actively vomiting, rest on your side rather than your back. This keeps your airway clear so fluids can drain from your mouth instead of being inhaled.
Start Fluids Slowly
Once a couple of hours have passed without vomiting, start with ice chips or very small sips of water every 15 minutes. The goal is to test your stomach, not fill it. If plain water stays down for an hour, you can gradually increase the amount and try other clear fluids like diluted broth or an oral rehydration solution.
Oral rehydration solutions (sold at most pharmacies, often marketed for children but effective for adults too) are the best option for replacing what you lost. They contain about 75 mmol/L of sodium, which is roughly three times the sodium concentration in most sports drinks. That higher sodium level is what actually helps your body hold onto the fluid you’re drinking rather than just passing it through. Sports drinks are better than nothing, but they’re designed for sweat loss, not vomiting recovery, and their sugar content can sometimes worsen nausea.
Rehydrating a Child
Children dehydrate faster than adults, so fluid replacement needs to be more precise. For kids between 6 months and 4 years old, start with about 5 mL (one teaspoon) of an oral rehydration solution every 5 minutes for the first hour. If they keep that down, double it to 10 mL every 5 minutes for the next hour. Children over 4 can start with 10 mL every 5 minutes, increasing to 20 mL if the first hour goes well.
Small, frequent sips work far better than letting a thirsty child gulp a full cup, which often triggers another round of vomiting.
What to Eat When You’re Ready
You’ve probably heard of the BRAT diet: bananas, rice, applesauce, and toast. It’s a reasonable starting point for the first day or two, but there’s no research showing it works better than other bland foods. You don’t need to limit yourself to just those four items.
Other good early options include brothy soups, oatmeal, boiled potatoes, crackers, and plain dry cereal. These are all easy on the stomach while giving you a bit more variety. Avoid fatty, spicy, or dairy-heavy foods until you’ve tolerated bland meals for a full day.
Once your stomach feels more settled, start adding foods with actual nutritional substance: cooked carrots, sweet potatoes without the skin, avocado, skinless chicken or turkey, fish, and eggs. These are still gentle enough to digest easily but contain the protein and nutrients your body needs to bounce back. Sticking with only toast and crackers for too long can slow your recovery by depriving you of calories and essential nutrients.
Over-the-Counter Nausea Relief
If nausea lingers between vomiting episodes, bismuth subsalicylate (the active ingredient in Pepto-Bismol) can help settle your stomach. Antihistamine-based options like dimenhydrinate (Dramamine) are mainly useful for motion sickness rather than stomach bugs, and they cause drowsiness.
A few important cautions: bismuth subsalicylate should not be given to children under 12, and children or teenagers with flu or chickenpox symptoms should avoid it entirely because of the risk of Reye syndrome, a rare but serious condition. Pregnant women should not take any over-the-counter anti-nausea medication without talking to a doctor first. If you have glaucoma, heart disease, high blood pressure, thyroid problems, or breathing conditions like asthma, check with a pharmacist before taking antihistamine-based options.
Warning Signs That Need Medical Attention
Most vomiting passes on its own, but certain symptoms signal something more serious. Get medical help if you notice any of the following:
- Blood or bile (green/yellow fluid) in the vomit. This can indicate bleeding or a bowel obstruction.
- Severe abdominal pain that doesn’t ease between episodes.
- High fever alongside vomiting, especially in children.
- Projectile vomiting, where vomit is forcefully expelled rather than flowing out.
- Stiff neck or sensitivity to light, which can suggest meningitis.
- Vomiting lasting more than a week or an inability to keep any fluids down for more than 24 hours.
Watch for signs of dehydration, especially in children and older adults. Early dehydration looks like a dry mouth, darker urine, and irritability. More concerning signs include sunken eyes, skin that stays tented when you pinch it instead of snapping back quickly, rapid heartbeat, and cool or clammy hands and feet. In children, fewer wet diapers than usual is one of the most reliable early indicators. If you see any of these moderate-to-severe dehydration signs, seek medical care promptly rather than trying to rehydrate at home.