If someone who has been drinking is throwing up, keep them upright or turned onto their side, keep their airway clear, and stay with them. Do not let them lie flat on their back. Do not give them food, coffee, or more alcohol. Do not leave them alone to “sleep it off.”
Vomiting after drinking is the body’s response to a toxic load it cannot process fast enough. The main danger is not the vomiting itself. It is choking on vomit or losing consciousness while still impaired. Most of what helps is simple, unglamorous, and about positioning and supervision.
Why Does Alcohol Make People Throw Up?
Alcohol is absorbed through the stomach and small intestine and travels to the brain, where it slows down the central nervous system. That is what produces the relaxed, uncoordinated, slowed-down state people call being drunk.
The body treats alcohol as a toxin and tries to clear it, mostly in the liver. When someone drinks faster than the liver can keep up, blood alcohol keeps rising. The stomach lining becomes irritated, and the brain’s vomiting center can be triggered directly by alcohol in the blood. This is why vomiting can happen even when someone has not eaten anything that upset their stomach.
There is a common belief that throwing up “sobers someone up.” That is only partly true and often overstated. Vomiting may remove some alcohol still sitting in the stomach, which can slow further absorption. But alcohol already in the bloodstream is not removed by vomiting, and the liver still has to process it. A person can vomit and still have a dangerously high blood alcohol level.
What Is the Single Most Important Thing To Do?
Protect the airway. That is the priority above everything else on this page.
When a person vomits while lying on their back, vomit can flow back into the throat and windpipe instead of out of the mouth. If they are too impaired to cough or turn their head, they can inhale it. This is aspiration, and it can cause choking, pneumonia, or death.
Keep the person sitting up if they are awake and can hold themselves upright. If they must lie down, turn them onto their side with the mouth angled toward the floor so anything they bring up drains out. This position is sometimes called the recovery position. Keep the head slightly lower than the rest of the body if possible.
Stay with them. Do not leave the room for long stretches. If you must step away, make sure another sober adult is watching them.
How To Help A Drunk Person Throwing Up: Dos and Don’ts
Most of the practical guidance comes down to a short list. These steps apply to an awake person who is vomiting but responsive.
- Do keep them upright or on their side.
- Do stay with them and keep watching their breathing.
- Do keep their mouth and airway clear of vomit.
- Do offer small sips of water if they are fully alert and want it.
- Do keep them warm with a light blanket.
- Do call 911 if they cannot be woken, have slow or irregular breathing, or have blue lips or skin.
- Don’t let them lie flat on their back.
- Don’t leave them alone to sleep it off.
- Don’t give them more alcohol.
- Don’t give them coffee, energy drinks, or cold showers to “wake them up.”
- Don’t give them food while they are still actively vomiting.
- Don’t put them in a cold shower or make them walk around to sober up.
Coffee does not lower blood alcohol. Cold water does not lower blood alcohol. Neither does fresh air, slapping someone, or making them stand up. These only make a person feel more alert for a moment while their blood alcohol stays the same. In some cases they add risk, like a fall from unsteady standing or a burn from a hot drink.
When Should You Call 911?
Call emergency services if the person shows any sign of serious alcohol poisoning. These signs mean the situation has moved past “let them sleep it off” into a medical emergency.
- They cannot be woken up, or you cannot rouse them by speaking or shaking.
- Their breathing is slow, irregular, or has long gaps between breaths.
- Their skin is cold, clammy, pale, or has a blue or gray tint, especially the lips or fingertips.
- They are vomiting repeatedly and cannot stop.
- They had a seizure or a fall with a head injury.
- Their body temperature feels dangerously low.
Alcohol poisoning can be fatal. The threshold is not the same for everyone. Body weight, how fast someone drank, whether they ate, and their tolerance all affect how much alcohol is dangerous for them. Tolerance does not protect the brain or the airway. A heavy drinker can still reach a fatal blood alcohol level.
If you are unsure whether it is serious, call anyway. Emergency responders would rather check on someone who turns out to be fine than arrive too late.
What Not To Do When Someone Is Vomiting From Drinking
The most dangerous mistake is leaving someone alone because they seem to be “just sleeping.” A person can pass out, vomit while unconscious, and inhale it without anyone noticing.
Do not try to make them throw up. Forcing vomiting does not help and can cause injury or choking. If their body is already vomiting on its own, let it happen while keeping the airway clear.
Do not give them food to “soak up” the alcohol while they are still actively vomiting. There is no evidence that eating stops alcohol absorption in a way that helps in this situation, and food can add to the risk of choking if they are not fully alert. Once they are fully awake and have stopped vomiting, small bland food may be reasonable, but it is not a treatment.
Do not give them any medication to “sober up.” There is no product that reliably lowers blood alcohol. Some over-the-counter remedies marketed for hangovers have not been shown to reduce impairment. Pain relievers like acetaminophen are processed by the liver alongside alcohol and can add strain to the liver, so giving them during heavy drinking is not a good idea.
What About the Next Morning?
A hangover is not the same as still being drunk. By morning, most of the alcohol has usually been cleared, and what remains is the aftereffect: headache, nausea, fatigue, and thirst.
Rehydration helps with the symptoms caused by fluid loss, but it does not “cure” a hangover. There is no proven cure. Time is the main thing that resolves it. Rest, water, and bland food if they can tolerate it are reasonable. If someone is still vomiting the next morning, cannot keep fluids down, or is confused, that is a reason to seek medical care rather than wait it out.
One point worth knowing: the amount of alcohol that causes vomiting is not a fixed number. It depends on the person and the situation. Someone who vomits after a small amount may be more sensitive, or may have other factors at play. Vomiting is not a reliable sign that someone has had “too much” in a way that is safe, and it is not a reliable sign that they are now out of danger.
Frequently Asked Questions
Should you let a drunk person sleep after throwing up?
Only if they are fully awake, breathing normally, and lying on their side with someone checking on them. A person who cannot be woken or who is breathing slowly needs emergency help, not sleep.
Is it safe to give a drunk person water?
Small sips of water are fine if they are fully alert and want it. Do not force fluids into someone who is drowsy or vomiting heavily, because it can be choked on.
Does throwing up sober someone up?
It can slow further alcohol absorption if alcohol is still in the stomach, but it does not remove alcohol already in the bloodstream. A person can vomit and still have a dangerous blood alcohol level.
What position should a drunk person be in if they are vomiting?
Upright if they can stay that way, or on their side with the mouth angled down if they must lie down. Never flat on the back.

