After throwing up, your immediate priorities are rinsing your mouth, resting your stomach, and slowly replacing lost fluids. Most vomiting episodes from food poisoning, stomach bugs, or overindulgence resolve on their own within a day or two, but how you handle the first few hours makes a real difference in how quickly you bounce back.
The First 15 Minutes
Right after vomiting, rinse your mouth with plain water or a baking soda solution (about half a teaspoon of baking soda in a cup of water). This neutralizes the stomach acid coating your teeth and throat. Do not brush your teeth for at least an hour. Stomach acid softens tooth enamel, and scrubbing with a toothbrush while it’s still soft can permanently wear it away.
If you feel like you might vomit again, sit upright or lean slightly forward. Lying flat increases the chance of inhaling vomit into your lungs, especially if you’re drowsy. Once the nausea passes and you want to sleep, avoid lying on your back. Sleeping on your stomach or side reduces the small but real risk of choking if you vomit again during the night. Arranging pillows behind you can keep you from rolling over.
How to Start Drinking Fluids Again
Your stomach needs a break before you put anything back in it. Wait at least 15 to 30 minutes after vomiting before taking your first sip. Then start small: a tablespoon or two of water every 20 minutes. If that stays down, you can gradually increase the amount over the next few hours.
Water is fine for most adults, but vomiting depletes electrolytes like sodium and potassium along with fluid. Oral rehydration solutions, diluted sports drinks, or clear broth all help replace what you’ve lost. Avoid anything carbonated, caffeinated, or high in sugar, as these can irritate your stomach or pull more water into your intestines and make things worse. Sipping is better than gulping. Drinking too much too fast often triggers another round of vomiting.
For young children, the approach is even more cautious. Kids over age one should get about half an ounce to one ounce (one to two tablespoons) every 20 minutes for the first few hours, according to guidelines from Nationwide Children’s Hospital. Infants need even smaller amounts, just one to two teaspoons at a time given by spoon or syringe.
Recognizing Dehydration
Dehydration is the main complication of repeated vomiting, and it looks different depending on age. In adults, watch for extreme thirst, dark yellow urine, dizziness when standing up, and skin that stays “tented” (doesn’t snap back quickly) when you pinch it on the back of your hand. Feeling confused or extremely fatigued are later signs that dehydration is getting serious.
In babies and young children, the warning signs are more subtle: no wet diapers for three or more hours, no tears when crying, a sunken soft spot on top of the skull, sunken eyes, or unusual crankiness. A rapid heart rate and skin that doesn’t flatten back after a gentle pinch also signal that a child needs fluids quickly, possibly through medical intervention.
When and What to Eat
Don’t rush food. Wait until you’ve kept fluids down for several hours and your nausea has genuinely faded. When you’re ready, start with small portions of bland, easy-to-digest foods. The old standby BRAT diet (bananas, rice, applesauce, toast) works fine for a day or two, but it’s more restrictive than it needs to be. Brothy soups, plain oatmeal, boiled potatoes, crackers, and unsweetened dry cereal are equally gentle on the stomach.
Once those stay down comfortably, you can expand to more nutritious options: cooked squash, carrots, skinless chicken or turkey, fish, eggs, and avocado. These foods are still bland enough to avoid triggering nausea but provide the protein and nutrients your body needs to actually recover.
Certain foods and drinks should stay off the menu until you’re feeling solidly better:
- Acidic foods like citrus fruits and tomatoes
- Dairy products including milk and cheese
- Fried or greasy foods
- Spicy foods
- Sugary foods and drinks
- Alcohol and caffeine
Reintroducing heavy or rich foods too soon is one of the most common reasons nausea comes back after it initially seemed to pass.
Over-the-Counter Nausea Medications
Antihistamine-based medications originally designed for motion sickness (like dimenhydrinate and meclizine) can help with nausea from various causes. These are widely available without a prescription. Bismuth subsalicylate, the active ingredient in products like Pepto-Bismol, can also calm an irritated stomach lining.
If you’re pregnant, talk to your provider before taking any over-the-counter nausea medication. Some are considered safe during pregnancy, but the choice depends on how severe your symptoms are and how far along you are. For children, dosing is weight-based, so check the label carefully or call your pediatrician.
Warning Signs That Need Medical Attention
Most vomiting doesn’t require a doctor. But certain symptoms alongside vomiting signal something more serious. Head to an emergency room or urgent care if your vomit contains blood, looks like coffee grounds, or is bright green. These can indicate bleeding in the digestive tract or a bowel obstruction. A severe headache you’ve never experienced before, chest pain, confusion, or blurred vision alongside vomiting also warrant immediate evaluation.
The Mayo Clinic identifies several other red flags: high fever combined with a stiff neck, severe abdominal pain or cramping, and signs of significant dehydration like extreme thirst, very dark urine, dizziness upon standing, or weakness. Rectal bleeding paired with vomiting is another reason to seek emergency care.
For timing alone, adults should see a doctor if vomiting persists beyond two days. For children under two, the threshold is 24 hours. For infants, it’s 12 hours. And if you’ve been dealing with recurring bouts of nausea and vomiting for more than a month, or you’ve noticed unexplained weight loss alongside it, schedule an appointment even if each individual episode seems mild.