Alcohol poisoning happens when you drink enough alcohol in a short period that your body can’t process it safely, and it starts shutting down critical functions like breathing, temperature regulation, and consciousness. A blood alcohol concentration (BAC) between 0.30% and 0.40% typically causes loss of consciousness and life-threatening poisoning. Above 0.40%, you’re at risk of coma and death from respiratory failure.
How Alcohol Poisoning Affects Your Body
Alcohol is a depressant, meaning it slows down your central nervous system. At normal drinking levels, this produces the familiar relaxation and lowered inhibitions. During alcohol poisoning, that slowing becomes dangerous. Your brain begins losing control over basic involuntary functions, the ones you never have to think about: breathing, heart rate, body temperature, and the gag reflex that keeps you from choking.
Breathing slows to fewer than 8 breaths per minute, or becomes irregular with gaps of 10 seconds or more between breaths. Your heart rate drops. Your body temperature can fall low enough to trigger cardiac arrest. Blood sugar plummets, sometimes to levels that cause seizures. Skin turns clammy, pale, or bluish as circulation falters.
One of the most immediately dangerous effects is the loss of your gag reflex. Vomiting is common during alcohol poisoning, and without a functioning gag reflex, vomit can enter the airway and lungs. This can cause choking or lead to aspiration pneumonia, a serious lung infection that develops when foreign material gets trapped in the lungs and bacteria begin to grow. People who are unconscious or semi-conscious from alcohol poisoning are especially vulnerable because they can’t cough the material out or even notice it’s happening.
What It Feels Like as It Progresses
Alcohol poisoning doesn’t hit all at once. It escalates. Early signs include mental confusion and stupor, where the person seems disoriented beyond normal drunkenness. They may struggle to stay conscious, slurring words in a way that goes beyond typical intoxication. Coordination is severely impaired.
As it worsens, the person becomes difficult or impossible to wake up. They may vomit repeatedly while barely conscious. Seizures can occur as blood sugar crashes. Their skin may feel cold and clammy to the touch. At this stage, the body is in crisis. Without medical help, breathing can stop entirely.
It’s worth knowing that BAC can continue rising even after someone stops drinking. Alcohol in the stomach and intestines keeps absorbing into the bloodstream, so a person who seemed “just very drunk” 20 minutes ago can deteriorate rapidly.
Mixing Alcohol With Other Substances
Combining alcohol with other depressants lowers the threshold for a fatal overdose significantly. Opioids (like fentanyl, oxycodone, or heroin) and benzodiazepines (commonly prescribed for anxiety or sleep) both slow breathing on their own. Adding alcohol compounds that effect, and the combination can suppress breathing to dangerous levels at doses that might not be fatal individually.
The CDC lists alcohol-involved drug overdoses among the roughly 61,000 annual deaths linked to binge drinking or drinking too much on a single occasion. These deaths aren’t limited to people with substance use disorders. They include people who mixed a prescribed medication with a night of heavy drinking without understanding the risk.
Who Dies From Alcohol Poisoning
About 178,000 people die from excessive alcohol use each year in the United States, based on 2020 to 2021 data from the CDC. Of those, roughly one-third (about 61,000) are tied to single-occasion heavy drinking, including motor vehicle crashes, alcohol poisonings, drug overdoses involving alcohol, and suicides. Men account for about 119,600 of the total annual deaths, compared to about 58,700 among women. Most deaths occur in adults 35 and older, though approximately 4,000 deaths each year involve people under 21.
What Happens at the Hospital
Emergency treatment for alcohol poisoning focuses on keeping you alive while your body processes the alcohol. That means protecting your airway so you can breathe, monitoring your heart rate and breathing, and restoring fluids. If your blood sugar has dropped dangerously low, that will be corrected. If your body temperature has fallen, warming measures are used.
There’s no way to speed up how fast your liver breaks down alcohol. Coffee, cold showers, and “walking it off” do nothing to lower your BAC. The hospital essentially manages the crisis and prevents the complications (choking, seizures, cardiac arrest, respiratory failure) while your body does the slow work of metabolizing what you drank.
Lasting Damage After Surviving
Surviving alcohol poisoning doesn’t always mean walking away unharmed. The brain is particularly vulnerable during an episode because it’s deprived of adequate oxygen when breathing slows or stops. Even brief periods of oxygen deprivation can damage brain tissue, potentially affecting memory, coordination, or cognitive function permanently. The severity depends on how long the brain went without sufficient oxygen and how quickly treatment was received.
Seizures during alcohol poisoning can also cause lasting neurological effects. Aspiration pneumonia, if it develops, requires its own course of treatment and can lead to serious complications in the lungs. Severe hypothermia and cardiac events during poisoning can cause organ damage that persists long after the alcohol is out of your system.
What to Do if Someone Is in Trouble
If someone shows signs of alcohol poisoning, call 911 immediately. While waiting for help, keep the person awake if possible. If they’re conscious and able to swallow, have them sip water. Never leave them alone, especially if they’re vomiting or drifting in and out of consciousness.
If the person is unconscious, turn them on their side. This reduces the chance of choking on vomit. Do not try to make them vomit. Do not give them coffee or put them in a cold shower. These do not help and can make things worse, particularly the cold shower, which can accelerate hypothermia in someone whose body temperature is already dangerously low.
The signs that matter most: breathing that seems too slow or irregular, skin that looks bluish or feels cold and clammy, inability to wake the person up, or seizures. Any of these means the situation is a medical emergency, not something to sleep off.