Hangover vomiting usually peaks around 14 hours after you started drinking and can linger for up to 12 hours after you wake up. The good news: most of what you can do to stop it works quickly, and the nausea will resolve on its own within that window. Here’s how to speed things along and feel functional again.
Why Alcohol Makes You Vomit
Three things are happening in your body at once, and all of them contribute to nausea. First, alcohol directly irritates and erodes the lining of your stomach. Even a single night of heavy drinking can trigger a form of gastritis, leaving your stomach inflamed and hypersensitive the next morning.
Second, your liver is busy breaking down alcohol into a toxic byproduct called acetaldehyde. This compound is eventually converted into harmless acetic acid, but that conversion takes time. While acetaldehyde circulates in your blood, it drives nausea, flushing, and general misery. Some people, particularly those of East Asian descent, have a genetic variation that makes this conversion even slower, which is why they tend to feel sicker from the same amount of alcohol.
Third, your liver has to choose between detoxifying alcohol and maintaining your blood sugar. It picks alcohol. That means your blood sugar can drop below normal levels, and low blood sugar on its own causes nausea, shakiness, and weakness. So you’re dealing with a triple hit: an inflamed stomach, a toxic byproduct in your blood, and low fuel for your brain and muscles.
Stop the Vomiting First
If you’re actively throwing up, don’t try to eat or drink large amounts. Take very small sips of water or an electrolyte drink, just enough to wet your mouth, every few minutes. Flooding your stomach with liquid when it’s already irritated will make you vomit again.
Lie on your side rather than your back. This keeps your airway clear if you vomit while drowsy. Once the active vomiting slows down (usually after the stomach empties), you can start introducing fluids more steadily. Wait at least 15 to 30 minutes after your last episode of vomiting before drinking a full glass of anything.
Rehydrate With the Right Fluids
Plain water helps, but it doesn’t replace the sodium and potassium you lost. Oral rehydration solutions, the kind sold at pharmacies for stomach bugs, work best because they contain sodium and glucose in a ratio that optimizes absorption through your gut lining. Premixed commercial versions (like Pedialyte) are widely available and effective.
If you don’t have a rehydration solution on hand, a sports drink or diluted fruit juice with a pinch of salt will do. The key is combining some sugar with some sodium, because your intestines absorb water much faster when both are present. Sip slowly. If you can keep down about a cup over 15 to 20 minutes without vomiting, gradually increase.
Raise Your Blood Sugar
Because your liver deprioritized blood sugar regulation while processing alcohol, eating a small amount of simple carbohydrates can make a noticeable difference in how you feel. Crackers, toast, a banana, or a few spoonfuls of rice are all good starting points. You’re aiming for roughly 15 grams of carbohydrates, about the equivalent of a slice of white bread or a single banana.
Don’t force a full meal. Your stomach lining is inflamed and your digestive system is sluggish. Start with bland, easy-to-digest foods: bananas, plain rice, oatmeal, applesauce, or dry toast. These contain soluble fiber, which is gentle on an irritated stomach. Once you can tolerate those without worsening nausea, you can add in more substantial food. Greasy or acidic foods are likely to make things worse, so save the bacon and orange juice for later.
Ginger Works, and Here’s How Much
Ginger is one of the few natural remedies with solid clinical evidence behind it for nausea relief. Studies on nausea and vomiting have tested doses ranging from 500 mg to 1,500 mg per day, typically split into multiple doses. In practical terms, that’s about 250 mg of powdered ginger in capsule form taken four times a day, or roughly a half-inch piece of fresh ginger steeped in hot water as tea.
Ginger ale is a popular choice, but most commercial brands contain very little actual ginger. If you’re using ginger ale, check that ginger extract is listed as an ingredient, not just “natural flavors.” Ginger chews or capsules from a pharmacy are more reliable.
Over-the-Counter Options
Bismuth subsalicylate (the active ingredient in Pepto-Bismol) can help coat your irritated stomach lining and reduce nausea. The standard dose for adults is two tablets or two tablespoons of the liquid, repeated every 30 minutes to an hour as needed. Don’t exceed 16 tablespoons of regular-strength liquid or the equivalent in tablets over 24 hours.
One important caution: bismuth subsalicylate contains a compound related to aspirin. If you’ve taken any aspirin or aspirin-containing pain relievers (which many people reach for during a hangover), combining the two raises your risk of salicylate overdose. Signs include ringing in the ears, confusion, and rapid breathing. Stick to one or the other, not both. Also avoid this medication if you have a history of stomach ulcers, bleeding disorders, or kidney disease.
Avoid ibuprofen and aspirin on an already-irritated stomach, as both can worsen gastritis. Acetaminophen is easier on the stomach but puts additional strain on a liver that’s already working overtime to clear alcohol. If you need pain relief, acetaminophen in a single standard dose is generally the safer option, but less is better while your liver is still recovering.
The Timeline for Feeling Better
Research tracking hangover severity found that symptoms begin climbing about 8 hours after drinking, peak at roughly 14 hours, and last an average of 18.4 hours from when you stopped drinking. From the time you wake up, expect about 12 hours before you feel fully normal. That timeline is an average, and it varies with how much you drank, your body weight, how well you slept, and whether you ate before drinking.
The vomiting itself tends to be worst in the first few hours after waking and usually tapers off well before the headache and fatigue do. If you’re managing fluids and bland food, most people stop vomiting within a few hours of waking up. The lingering nausea that follows can take longer to fully clear.
Signs This Is More Than a Hangover
Most hangover vomiting is unpleasant but not dangerous. However, vomiting that started while you were still heavily intoxicated, or that continues alongside other symptoms, can signal alcohol poisoning, which is a medical emergency. Call for help if you or someone else has any of the following:
- Confusion or stupor beyond normal grogginess
- Inability to stay conscious or difficulty waking up
- Slow breathing (fewer than 8 breaths per minute) or long gaps between breaths (10 seconds or more)
- Seizures
- Clammy, bluish, or very pale skin
- No gag reflex, which raises the risk of choking on vomit
Alcohol poisoning happens because alcohol in the bloodstream can reach levels high enough to suppress the brain areas controlling breathing, heart rate, and temperature. Someone who is vomiting while unconscious or semi-conscious needs emergency care immediately. Don’t assume they’ll “sleep it off.”