Alcohol poisoning is what happens when so much alcohol enters the bloodstream that the parts of the brain controlling breathing, heart rate, and body temperature start to shut down. The line between “very drunk” and “medical emergency” comes down to a few specific warning signs, and you don’t need to see all of them before taking action. A person who has passed out from drinking can die.
If you’re reading this because you’re worried about someone right now, here’s the fastest way to tell: count their breaths. Fewer than 8 breaths per minute, or gaps of 10 seconds or more between breaths, signals a life-threatening situation. Call 911.
Signs That Point to Alcohol Poisoning
Being drunk and having alcohol poisoning exist on a spectrum, but certain symptoms cross the line from intoxication into overdose. The critical signs include:
- Mental confusion or stupor beyond normal drunkenness
- Inability to wake up or stay conscious
- Slow breathing: fewer than 8 breaths per minute
- Irregular breathing: 10 seconds or more between breaths
- Vomiting, especially while unconscious or semiconscious
- Seizures
- Slow heart rate
- Clammy skin, bluish or pale color
- Extremely low body temperature
- No gag reflex, which means the body can’t protect itself from choking on vomit
That last point is especially dangerous. A person who is drunk enough to lose their gag reflex can inhale their own vomit into their lungs, which can be fatal even if the alcohol itself wouldn’t have killed them. This is one of the most common ways alcohol poisoning turns deadly.
How It Differs From Being Very Drunk
At a blood alcohol concentration (BAC) of 0.08%, you’re legally impaired. At 0.15%, you’re likely dealing with nausea, vomiting, and loss of balance. Between 0.15% and 0.30%, confusion and drowsiness set in. But between 0.30% and 0.40%, you’ve likely crossed into alcohol poisoning territory, with loss of consciousness. Above 0.40%, coma and death from respiratory arrest become real possibilities.
The tricky part is that you can’t measure someone’s BAC by looking at them. What you can do is watch for the shift from “drunk behavior” to “body shutting down.” A drunk person slurs their words and stumbles. A person with alcohol poisoning can’t be woken up, breathes abnormally slowly, or has skin that looks bluish or gray. The distinction isn’t about how much they drank. It’s about whether their body is still managing basic functions.
One important detail: alcohol continues to absorb into the bloodstream even after a person stops drinking. Someone who seems “just really drunk” can deteriorate over the next 30 to 60 minutes as more alcohol reaches their brain. Never assume they’ll just sleep it off.
What to Do Right Now
If you see any of the warning signs above, call 911 immediately. While waiting for help:
If the person is unconscious, turn them on their side. This is the single most important thing you can do. If they vomit in this position, the liquid drains out instead of blocking their airway. Do not leave them lying on their back.
If they’re awake, have them sip water slowly. If they’re unconscious, don’t give them anything to drink, because they could choke. Cover them with a blanket or jacket, since alcohol poisoning can cause dangerously low body temperature. Talk to them calmly and explain what you’re doing, because even confused or semi-alert people can become agitated and combative when they feel out of control.
When paramedics arrive, tell them everything you can: how much the person drank, over what time period, whether they took any other substances, and what symptoms you noticed. That information helps the medical team act faster.
What Happens at the Hospital
Treatment for alcohol poisoning is mostly supportive, meaning the medical team keeps the person alive and stable while their body processes the alcohol. That typically involves monitoring their breathing and preventing choking, giving oxygen if needed, providing fluids through an IV to prevent dehydration, and administering vitamins and glucose to reduce the risk of serious complications. There’s no magic antidote that instantly sobers someone up. The body has to do the work.
In rare cases involving accidental ingestion of methanol or isopropyl alcohol (found in some household products, not standard drinks), a mechanical blood-filtering process may be needed because those substances are far more toxic than the ethanol in beverages.
Who Is Most at Risk
Several factors affect how quickly someone reaches a dangerous blood alcohol level. Smaller body size means alcohol concentrates faster. Drinking on an empty stomach speeds absorption dramatically compared to drinking after a meal. Tolerance can be deceptive: a person who drinks regularly may not “feel” as drunk at the same BAC, but their organs are still taking the same damage. And mixing alcohol with other depressants, including sleep medications and opioids, compounds the effects on breathing and heart rate.
Binge drinking is the most common path to alcohol poisoning. That means roughly 4 drinks within 2 hours for women or 5 for men, though the exact threshold varies by body weight and other factors. Drinking games, shots consumed in rapid succession, and high-alcohol beverages all increase the risk because they deliver large amounts of alcohol before the body has time to metabolize what’s already in the system.
The Bigger Picture
Alcohol poisoning isn’t rare. The CDC reports that excessive alcohol use caused about 178,000 deaths per year in the United States during 2020 and 2021. Roughly 61,000 of those deaths each year resulted from binge drinking or drinking too much on a single occasion, a category that includes alcohol poisoning, alcohol-involved overdoses, and crashes. Men accounted for about twice as many alcohol-related deaths as women. And roughly 4,000 of those annual deaths involved people under 21.
A single episode of alcohol poisoning can cause lasting harm even if the person survives. When the brain is deprived of oxygen from slow or interrupted breathing, permanent damage can result. Severe dehydration can affect the kidneys. Seizures during an overdose carry their own risks of injury. Surviving alcohol poisoning is not the same as walking away unharmed.