Alcohol poisoning shows up as a cluster of dangerous symptoms: confusion, vomiting, slow or irregular breathing, pale or bluish skin, low body temperature, seizures, and loss of consciousness. If someone has even two or three of these signs after heavy drinking, the situation is an emergency. A blood alcohol concentration (BAC) over 0.31% can be fatal, and a person can reach that level before they ever pass out.
The Warning Signs to Watch For
Normal drunkenness and alcohol poisoning exist on a spectrum, which makes it hard to know exactly when the line has been crossed. The key difference is that a drunk person is impaired but responsive, while someone with alcohol poisoning is shutting down. Here’s what that looks like in practice:
- Confusion or stupor. Not just slurring words or being silly. The person can’t follow a conversation, doesn’t know where they are, or can’t stay conscious.
- Vomiting, especially while unconscious. Alcohol suppresses the gag reflex, so a person who vomits while passed out can choke and stop breathing.
- Slow or irregular breathing. Fewer than eight breaths per minute, or gaps of 10 seconds or more between breaths.
- Pale, bluish, or cold skin. This signals that the body’s circulation is failing to keep up. Skin may feel clammy to the touch.
- Seizures. Alcohol poisoning can cause seizures even in people who have never had one before.
- Unresponsiveness. If you can’t wake someone up by shaking them or shouting, that’s a medical emergency, full stop.
You don’t need to see every symptom on this list to take action. Any combination of these signs after heavy drinking warrants a call to emergency services.
Why Symptoms Can Appear After Someone Stops Drinking
One of the most dangerous things about alcohol poisoning is that it doesn’t always peak while the person is still drinking. The body absorbs alcohol far faster than it processes most nutrients, but there’s still a delay. Alcohol sitting in the stomach and intestines continues entering the bloodstream even after someone has stopped drinking or passed out. That means BAC can keep climbing for a significant period after the last drink.
This is why “sleeping it off” is so risky. A person who seems merely drunk when they lie down may cross into poisoning territory 20 or 30 minutes later, with no one watching. A fatal dose of alcohol can be consumed before someone ever loses consciousness.
How Much Drinking Puts You at Risk
Binge drinking is defined as reaching a BAC of 0.08% or higher, which typically means about five drinks in two hours for men and four for women. Alcohol poisoning usually involves drinking well beyond that threshold, often at what researchers call “high-intensity” levels: 10 or more drinks for men, or eight or more for women, in a single occasion. Younger people reach dangerous BAC levels even faster, with as few as three to five drinks in the same time frame depending on age and body size.
At a BAC between 0.16% and 0.30%, you’ll experience serious difficulty walking and speaking, drowsiness, confusion, nausea, memory blackouts, vomiting, or loss of consciousness. Above 0.31%, the risk of coma, respiratory failure, and death rises sharply. The exact number of drinks that gets you there depends on your weight, sex, how quickly you drank, whether you ate beforehand, and individual metabolism. There is no universal safe number of drinks that guarantees you’ll stay below the danger zone.
What to Do While Waiting for Help
If someone shows signs of alcohol poisoning, call emergency services immediately. While you wait, the NHS recommends these steps:
- Stay with them. The biggest risks are choking on vomit and stopped breathing, both of which can happen suddenly.
- Position them safely. If they’re awake, sit them up. If they’ve passed out, roll them onto their side in the recovery position so vomit can drain out of their mouth rather than blocking their airway. Check that they’re still breathing.
- Offer water only if they can swallow. Small sips, nothing more. Never try to force fluids into someone who isn’t fully conscious.
- Keep them warm. Alcohol poisoning drops body temperature. A blanket or jacket helps.
What Does Not Help
Several popular “remedies” for severe intoxication are not just ineffective but genuinely dangerous. Black coffee and caffeine do nothing to counteract alcohol’s effects on the brain and organs. They can create a false sense of alertness while the poisoning continues. A cold shower can cause the shock of cold to make someone pass out, potentially hitting their head or aspirating water. Walking it off doesn’t speed up alcohol metabolism. And sleeping it off, the most common instinct, is the one most likely to kill someone, because BAC continues rising and no one is monitoring their breathing.
You cannot reverse alcohol poisoning at home. The body processes alcohol at a fixed rate, roughly one standard drink per hour, and nothing speeds that up. The only effective treatment is medical supervision, where professionals can protect the airway, monitor vital signs, and intervene if breathing or heart rate drops.
How Serious the Problem Really Is
About 178,000 people in the United States die each year from excessive alcohol use, a figure that jumped roughly 29% between the 2016-2017 and 2020-2021 periods. Alcohol-related poisonings, either from alcohol alone or combined with other drugs, rank among the leading causes of those deaths alongside liver disease, heart disease, and accidents. These aren’t rare fringe cases. They happen at college parties, backyard barbecues, and holiday gatherings, often to people who didn’t realize how much they’d consumed in a short window of time.