If someone is unconscious or semi-conscious, breathing fewer than eight times per minute, having seizures, or showing bluish skin around their lips or fingernails, call 911 immediately. These are signs of alcohol poisoning, and waiting it out can be fatal. A blood alcohol concentration between 0.30% and 0.40% typically causes loss of consciousness, and anything above 0.40% carries a real risk of coma and death from the body simply stopping breathing.
Beyond those extreme situations, there are several other scenarios where a hospital visit is the right call. Knowing what to look for can help you act fast when it matters most.
Signs of Alcohol Poisoning
Alcohol poisoning happens when someone drinks enough to shut down the basic functions that keep them alive: breathing, heart rate, temperature regulation, and the gag reflex. It doesn’t require a lifetime of heavy drinking. A single episode of binge drinking can do it.
The warning signs to watch for:
- Breathing problems: Fewer than eight breaths per minute, or long gaps (10 seconds or more) between breaths
- Loss of consciousness: They pass out and can’t be woken up, or they drift in and out of awareness
- Vomiting while unconscious or semi-conscious: Without a functioning gag reflex, they can choke on their own vomit
- Cold, clammy, or bluish skin: Especially around the lips and fingernails, which signals the body isn’t circulating oxygen properly
- Seizures
- Slow heart rate
- Hypothermia: The body temperature drops dangerously low
Any one of these signs is enough to justify a 911 call. You don’t need to see all of them, and you don’t need to be sure it’s “really” alcohol poisoning before acting.
Why “Sleeping It Off” Can Be Dangerous
The instinct to let someone sleep it off is understandable but potentially deadly. Alcohol continues to absorb into the bloodstream even after a person stops drinking, which means their blood alcohol level can still be rising after they pass out. Someone who seems merely drunk at midnight could be in serious trouble by 1 a.m.
The biggest risk is choking. Alcohol suppresses the gag reflex, the automatic response that keeps vomit out of your airway. A person who vomits while passed out on their back may not cough or turn their head. This is one of the most common ways alcohol poisoning kills. If you’re with someone who’s passed out drunk and you can’t get them to a hospital, at minimum roll them onto their side so vomit can drain out rather than block their airway. But staying home and hoping for the best is not a substitute for emergency care when the signs above are present.
When to Call 911 vs. Drive to the ER
If the person is unconscious, having seizures, or struggling to breathe, call 911 rather than driving them yourself. Paramedics can protect the airway and provide oxygen en route, which you can’t do in the back seat of a car. Someone who is vomiting and barely conscious could stop breathing during a 15-minute drive.
Driving to the ER is reasonable when the person is conscious and responsive but showing concerning signs like persistent vomiting, severe confusion, complaints of chest pain, shortness of breath, or abdominal pain. These don’t always mean alcohol poisoning, but they do signal a medical condition that needs professional evaluation. If you’re unsure whether the situation warrants 911, err on the side of calling. Dispatchers can help you assess the situation over the phone.
What Happens at the Hospital
Hospital treatment for alcohol poisoning focuses on keeping the person alive while their body processes the alcohol. There is no drug that instantly sobers someone up. The first priority is making sure they can breathe, which in severe cases may mean placing a tube in the airway. Staff will monitor heart rate, oxygen levels, and breathing continuously.
Alcohol acts as a powerful diuretic, so dehydration is common. IV fluids help restore hydration and correct blood sugar, which can drop dangerously low during heavy intoxication. If blood sugar has fallen too far, a sugar solution is given intravenously. The hospital stay is largely about supervised waiting: keeping the person safe, warm, and hydrated until the alcohol clears their system.
Alcohol Withdrawal Is a Separate Emergency
Alcohol poisoning isn’t the only alcohol-related reason to go to the hospital. If someone who drinks heavily every day suddenly stops, the withdrawal itself can become life-threatening. This is a different situation from acute intoxication, but it’s equally urgent.
Withdrawal symptoms typically appear one to three days after the last drink. The earliest and most dangerous complication is seizures, which can strike as soon as six hours after stopping and peak within 48 hours. More than 90% of withdrawal seizures happen in that first 48-hour window. Mild withdrawal looks like a racing heart, elevated blood pressure, sweating, and tremors. That alone warrants medical attention.
The most severe form of withdrawal, called delirium tremens, affects roughly 3% to 5% of hospitalized withdrawal patients. It involves extreme confusion, hallucinations, and dangerous spikes in heart rate and blood pressure. Without treatment, delirium tremens has a mortality rate as high as 20%, usually from infection, heart rhythm problems, or respiratory failure. With proper medical care, that rate drops to 1% to 4%. If someone who drinks daily is showing tremors, confusion, or agitation after stopping, they need emergency care. This is not something to manage at home.
Situations People Underestimate
Not every alcohol emergency looks dramatic. Some scenarios that seem manageable are actually more dangerous than they appear.
A person who is very drunk and also took other substances, even over-the-counter sleep aids or prescription medications, faces compounded risks. Multiple depressants working together can slow breathing far more than alcohol alone. If you know or suspect someone mixed alcohol with any other drug, treat the situation as more urgent than the alcohol alone would suggest.
Head injuries are another hidden danger. Someone who fell while drunk, hit their head, and now seems drowsy may be showing signs of a concussion or brain bleed rather than just intoxication. Drowsiness from a head injury and drowsiness from alcohol look nearly identical from the outside. If there’s any possibility of a head injury, get them evaluated.
Finally, pay attention to the person’s drinking history. Someone with no tolerance who drinks an unusually large amount is at higher risk for poisoning than a chronic heavy drinker consuming the same quantity. College students and young adults at parties are particularly vulnerable because binge drinking can push blood alcohol levels to dangerous thresholds before anyone realizes something is wrong.