Alcohol poisoning is happening when someone has drunk so much that the brain starts losing control of basic survival functions like breathing, heart rate, and body temperature. This is not the same as being very drunk. The key differences are specific warning signs that point to a medical emergency, and recognizing them quickly can save a life.
The Warning Signs That Matter Most
The line between “extremely drunk” and “alcohol poisoning” comes down to what the brain can still manage. When blood alcohol levels climb high enough, the parts of the brain responsible for keeping you alive begin to shut down. A blood alcohol concentration over 0.31% is considered especially dangerous and can be fatal. For context, the legal driving limit is 0.08%, so alcohol poisoning territory is roughly four times that level.
The critical signs to watch for are:
- Unconsciousness or inability to be woken up. This is not the same as falling asleep. If someone has passed out from drinking and you cannot rouse them by calling their name, shaking their shoulders, or rubbing their sternum, that is an emergency.
- Slow or irregular breathing. Fewer than eight breaths per minute, or gaps of 10 seconds or more between breaths, signals the brain is losing its ability to regulate respiration.
- Vomiting while unconscious. Alcohol suppresses the gag reflex at high levels. Without that reflex, a person who vomits while passed out can choke, inhaling vomit into the lungs and suffocating.
- Mental confusion or stupor. Not just slurred speech or poor coordination. A person with alcohol poisoning may be conscious but completely unresponsive to their surroundings, unable to answer simple questions or recognize people.
- Seizures. Alcohol poisoning can cause blood sugar to drop dangerously low, which triggers seizures. It can also reduce oxygen flow to the brain, compounding the risk.
- Cold, clammy, or bluish skin. Because alcohol disrupts temperature regulation, the body can lose heat rapidly. Pale or blue-tinged skin, especially around the lips and fingertips, indicates the body is not circulating oxygen properly.
Any one of these signs on its own is reason to call emergency services. You do not need to see all of them at once.
Why It’s More Dangerous Than It Looks
One of the most dangerous aspects of alcohol poisoning is that it can worsen even after a person stops drinking. Alcohol continues to absorb from the stomach and intestines into the bloodstream for some time after the last drink. Someone who seems “just really drunk” at midnight can be in a life-threatening state 30 minutes later as their blood alcohol level continues to climb.
The body can only process roughly one standard drink per hour. When someone consumes large quantities quickly, through binge drinking, shots, drinking games, or chugging, alcohol floods the bloodstream far faster than the liver can clear it. The brain becomes increasingly suppressed in a predictable sequence: first judgment and coordination go, then speech and balance, then consciousness, then the automatic systems that keep you breathing.
Never assume someone who has passed out from drinking is just “sleeping it off.” That assumption is exactly how alcohol poisoning kills. The person may vomit and choke without waking, stop breathing gradually, or develop hypothermia, particularly if they’re outside or on a cold surface.
What Doesn’t Help (and Can Hurt)
Coffee, cold showers, fresh air, food, and walking around will not reverse alcohol poisoning. Time is the only thing that clears alcohol from the body. Coffee might make someone more alert, but it does nothing to lower their blood alcohol level. You end up with a wide-awake person whose brain is still shutting down, which can actually make the situation harder to read because they seem more functional than they are.
Cold showers are particularly risky. Someone with alcohol poisoning is already losing body heat because alcohol impairs the brain’s ability to regulate temperature. Exposing them to cold water accelerates that heat loss and can push them toward hypothermia. Forcing water or food on someone who is semiconscious risks choking, since their gag reflex may already be compromised.
What to Do While Waiting for Help
If someone is unconscious or semiconscious and you’ve called for emergency help, the most important thing you can do is keep their airway clear. Place them on their side in what’s called the recovery position. Raise the arm closest to you above their head, then gently roll them toward you so they’re resting on their side. Tilt their head up slightly to keep the airway open, and tuck their hand under their cheek to keep the face off the floor. This position lets vomit drain out of the mouth rather than pooling in the throat.
Do not move someone if you think they may have fallen and injured their spine. Stay with them and monitor their breathing. If they stop breathing, that changes the situation to a cardiac or respiratory emergency.
Who Is at Higher Risk
Alcohol poisoning can happen to anyone who drinks too much too fast, but certain factors lower the threshold. Smaller body size means less blood volume to dilute the alcohol. People who haven’t eaten recently absorb alcohol faster. Those taking medications that depress the central nervous system, such as sleep aids, anti-anxiety medications, or opioid painkillers, face compounding effects because those drugs slow the same brain functions alcohol targets.
Tolerance is misleading here. Someone who drinks regularly may not feel as drunk at a given blood alcohol level, but their organs are still being poisoned at the same rate. Feeling functional does not mean you are safe. The liver processes alcohol at the same speed regardless of how accustomed your brain is to its effects.
What Happens at the Hospital
If you or someone else ends up in the emergency room for suspected alcohol poisoning, the medical team will check blood alcohol levels along with blood sugar and other indicators of how the body is coping. Low blood sugar is a common complication and can be corrected with intravenous fluids. The main focus is on supporting breathing and preventing choking while the body clears the alcohol on its own.
In cases where someone has accidentally consumed methanol (found in some industrial products) or isopropyl alcohol (rubbing alcohol) rather than ethanol, the treatment is different and more intensive, sometimes requiring a process to mechanically filter toxins from the blood. This is one reason the hospital runs blood tests rather than simply monitoring symptoms.
Recovery time varies depending on how much was consumed, the person’s size, and whether complications like aspiration or seizures occurred. Most people treated promptly for straightforward alcohol poisoning leave the hospital within 24 hours once their blood alcohol has dropped to safe levels and they can breathe, eat, and drink normally.