Alcohol poisoning shows up as a cluster of dangerous symptoms: mental confusion, vomiting, seizures, slow or irregular breathing, clammy skin, bluish or pale skin color, extremely low body temperature, and difficulty staying conscious. If someone has even two or three of these signs after heavy drinking, the situation is a medical emergency. You don’t need all of them to be present.
This isn’t the same as being “really drunk.” Alcohol poisoning means the amount of alcohol in the blood has reached a level that starts shutting down basic body functions like breathing, heart rate, and the gag reflex. It can kill.
The Warning Signs to Watch For
The most reliable signs of alcohol poisoning involve breathing and consciousness. Specifically, watch for:
- Slow breathing: fewer than eight breaths per minute
- Irregular breathing: gaps of 10 seconds or more between breaths
- Inability to stay conscious or wake up
- Mental confusion or stupor beyond normal intoxication
- Vomiting, especially while unconscious or semi-conscious
- Seizures
- Clammy skin
- Bluish, gray, or pale skin color
- Extremely low body temperature
The breathing changes are particularly important because they’re easy to check and they signal the brain is losing control of automatic functions. Count breaths for 30 seconds and double it. If you’re getting under eight per minute, or if you notice long pauses between breaths, that person needs emergency help immediately.
One of the trickiest signs is the loss of the gag reflex. Normally, your body will gag and clear your airway if something blocks it. Alcohol at toxic levels suppresses this reflex. That means if someone vomits while passed out, they can choke to death without ever waking up. This is one of the most common ways alcohol poisoning kills.
How It Differs From Being Very Drunk
There’s a real difference between someone who’s had too much and someone whose body is being poisoned. A very drunk person can still respond when you talk to them, even if they’re slurring. They can walk, however unsteadily. Their skin looks normal. They’re breathing regularly.
With alcohol poisoning, the person may not respond to shouting or shaking. Their skin may feel cold and clammy, or look bluish around the lips and fingertips. Their breathing is noticeably slow or irregular. They may be vomiting without waking up. If you can’t rouse someone who has been drinking heavily, don’t assume they’re “sleeping it off.” That’s the most dangerous assumption you can make.
Why Symptoms Can Appear After Someone Stops Drinking
A critical thing most people don’t realize: blood alcohol levels keep rising after the last drink. Alcohol takes time to move from the stomach into the bloodstream. On an empty stomach, blood alcohol typically peaks within about an hour of drinking, but this varies. Spirits are absorbed faster (peaking around 36 minutes on average) while beer takes longer (closer to an hour). If someone did multiple shots right before stopping, their blood alcohol could still be climbing well after their last drink.
This means someone can seem okay when they stop drinking but deteriorate significantly over the next 30 to 60 minutes. It’s why “putting them to bed” after a night of heavy drinking can be so dangerous. The worst symptoms may not have arrived yet.
The Blood Alcohol Levels That Cause Poisoning
Alcohol poisoning typically occurs at a blood alcohol concentration between 0.30% and 0.40%. For context, the legal driving limit in most U.S. states is 0.08%, so we’re talking about levels roughly four to five times higher than that. Above 0.40%, the risk of coma and death from respiratory arrest becomes very real.
You can’t measure your own blood alcohol at home with any reliability, which is why knowing the physical symptoms matters more than trying to calculate how many drinks someone had. Body weight, tolerance, food intake, speed of drinking, and the type of alcohol all affect how quickly someone reaches dangerous levels.
Why the Body Can’t Regulate Itself
At poisoning levels, alcohol disrupts the brain’s ability to control basic survival functions. Breathing slows because the brainstem, which normally keeps you breathing automatically, is being suppressed. Heart rate drops for the same reason.
Body temperature falls because alcohol dilates blood vessels near the skin’s surface. This actually creates a false sensation of warmth (which is why drunk people often say they feel hot), but it’s rapidly pulling heat out of the body through the skin. Core body temperature can drop below 95°F, which is the clinical threshold for hypothermia. The bluish or pale skin color many sources describe is a visible sign that the body isn’t circulating oxygen effectively.
What to Do While Waiting for Help
If you suspect alcohol poisoning, call emergency services. While waiting, turn the person on their side. This is sometimes called the recovery position, and its entire purpose is to keep the airway clear if they vomit. A person lying on their back who vomits can aspirate the vomit into their lungs, which can cause choking or severe lung damage.
Stay with them. Keep monitoring their breathing. If they stop breathing, tell the 911 dispatcher immediately.
Several common “remedies” are not just useless but actively harmful. Cold showers can cause a dangerous drop in body temperature in someone who is already hypothermic. Coffee does nothing to lower blood alcohol and can worsen dehydration. Walking someone around won’t speed up how fast the liver processes alcohol. There is no home remedy for alcohol poisoning. The liver breaks down alcohol at a fixed rate, and nothing you do will change that.
What Happens at the Hospital
In the emergency room, the focus is on keeping the person alive and stable while the body processes the alcohol. This typically means monitoring breathing and heart rate, maintaining hydration through IV fluids, preventing choking, and keeping body temperature stable. If breathing becomes dangerously slow, the medical team may need to assist with ventilation.
Blood tests can confirm the level of alcohol in the system, though the treatment approach is largely the same regardless of the exact number: support the body’s functions until the alcohol clears. Recovery time depends on how high the blood alcohol level reached and whether any complications occurred, but most people who receive prompt medical care survive without lasting physical damage from a single episode.
Lasting Damage From a Severe Episode
A single severe alcohol poisoning event can cause brain injury if the brain was deprived of oxygen, even briefly. Seizures during the episode can also cause neurological harm. If vomit was aspirated into the lungs, that can lead to a serious lung infection. In extreme cases, the heart can develop irregular rhythms that become life-threatening on their own.
These outcomes are more likely when someone doesn’t receive medical attention in time. The difference between a frightening night and a fatal one often comes down to whether someone nearby recognized the signs and called for help.