After you throw up, the most important things are to rest your stomach, protect your teeth, and slowly rehydrate. Most vomiting episodes pass on their own within a day, but how you handle the first few hours makes a real difference in how quickly you recover.
Rinse Your Mouth, but Don’t Brush
Your first instinct after vomiting might be to grab your toothbrush. Don’t. Stomach acid temporarily softens your tooth enamel, and brushing within an hour of throwing up can actually scrub that weakened enamel away. Instead, rinse your mouth with plain water or a mix of water and a small pinch of baking soda. The baking soda helps neutralize the acid. Swish, spit, and wait at least 60 minutes before brushing your teeth normally.
Wait Before You Drink Anything
Give your stomach 30 to 60 minutes of complete rest before you try to drink. Gulping water right away can trigger another round of vomiting. When you’re ready, start with small sips of clear liquids: water, diluted sports drinks, or clear broth. For adults, aim for a tablespoon or two every 15 to 20 minutes and gradually increase the amount over the next couple of hours. For young children, even smaller volumes work better, around one to two teaspoons at a time given every few minutes.
If you can keep those small sips down for an hour or two, slowly increase how much you drink. The goal is steady, gentle rehydration rather than flooding your stomach all at once.
Watch for Signs of Dehydration
Vomiting pulls fluid out of your body fast, so dehydration is the main risk to watch for. In adults, the clearest warning signs are dark-colored urine, urinating much less than usual, sunken-looking eyes, and skin that stays “tented” (doesn’t flatten back right away) when you gently pinch the back of your hand.
In babies and young children, watch for no wet diapers for three or more hours, a dry mouth, no tears when crying, and sunken eyes or cheeks. Children dehydrate faster than adults, so these signs deserve quick attention.
Ease Back Into Food Slowly
Once you’ve kept liquids down for a few hours, your appetite will likely start to return. Start with small amounts of bland, easy-to-digest food: plain toast, crackers, bananas, applesauce, or plain oatmeal. You may have heard of the BRAT diet (bananas, rice, applesauce, toast), and those foods are fine for a day or two. But there’s no research showing they work better than other gentle options. Brothy soups, boiled potatoes, and unsweetened dry cereal are equally good choices.
After a day or so of bland eating, start adding more nutritious foods back in. Cooked carrots, sweet potatoes without skin, avocado, scrambled eggs, and plain chicken or fish all provide the protein and nutrients your body needs to actually recover. The key is moving beyond the crackers-and-toast phase once your stomach can handle it, since staying on a very restricted diet for more than a couple of days means you’re missing out on nutrition right when your body needs it most.
What to Avoid While Recovering
Certain foods and drinks will irritate your stomach and can restart the cycle. Steer clear of dairy products, fatty or fried foods, spicy dishes, caffeine, and alcohol for at least 24 hours after your last episode of vomiting. Carbonated drinks can also bloat an already sensitive stomach, though some people find flat ginger ale or small sips of clear soda helpful.
Avoid lying completely flat right after throwing up. Sitting upright or reclining at an angle helps keep stomach acid where it belongs and reduces the chance of vomiting again.
Over-the-Counter Options for Nausea
If nausea lingers after you’ve thrown up, a couple of OTC options can help. Bismuth subsalicylate (the active ingredient in Pepto-Bismol) works by coating and protecting the stomach lining. It’s useful for nausea from stomach bugs or food poisoning. Possible side effects include temporarily darkened stools or tongue, constipation, and ringing in the ears, all of which go away once you stop taking it. Do not give bismuth subsalicylate to children under 12, or to any child or teenager who might have the flu or chickenpox, because of the risk of a serious condition called Reye syndrome.
Antihistamine-based anti-nausea medicines like dimenhydrinate (Dramamine) work differently. They block motion signals from the inner ear to the brain’s nausea center, making them best suited for motion sickness rather than stomach illness. They tend to cause drowsiness.
When Vomiting Needs Medical Attention
Most vomiting resolves within 24 hours. But certain red flags mean you should get medical help promptly:
- Black or bloody vomit. This can signal bleeding in the digestive tract.
- Inability to keep any fluids down for more than several hours (or less for young children).
- Vomiting that persists beyond a few days.
- Sharp, persistent abdominal pain that doesn’t ease up.
- Signs of significant dehydration, especially in children or older adults.
- A recent head injury before the vomiting started, which could indicate a concussion.
For infants, the threshold is lower. If a baby under three months vomits more than once, or if an older infant shows any dehydration signs, that warrants a call to their pediatrician right away.