Alcohol poisoning is a life-threatening emergency that kills more than 21,000 people per year in the United States. It occurs when the amount of alcohol in your bloodstream rises high enough to shut down basic functions like breathing, temperature regulation, and the gag reflex. At a blood alcohol concentration (BAC) above 0.31%, you risk losing consciousness, stopping breathing, or slipping into a coma. Unlike most hangovers, which feel terrible but resolve on their own, alcohol poisoning can cause permanent damage or death within hours if untreated.
What Happens Inside Your Body
Your liver processes roughly one standard drink per hour: one 12-ounce beer, one 5-ounce glass of wine, or one shot of liquor. When alcohol enters your system faster than your liver can break it down, your BAC climbs. At 0.16% to 0.30%, you’ll experience confusion, severe drowsiness, vomiting, blackouts, and difficulty walking or speaking. Above 0.31%, the alcohol starts interfering with the brain’s ability to control involuntary functions.
The most dangerous of those functions is breathing. Alcohol poisoning can slow your breathing rate to fewer than eight breaths per minute, or create gaps of ten seconds or more between breaths. Your heart rate drops. Your body temperature falls low enough to cause hypothermia, which is why the skin may turn blue, gray, or pale. At the same time, the muscles controlling the small flap of tissue that keeps food and liquid out of your airway become sluggish or completely paralyzed. If you vomit in this state, stomach contents can slide into your lungs. The acidic material is corrosive to lung tissue and triggers a rapid, often fatal form of pneumonia.
This combination of suppressed breathing, choking risk, and dropping body temperature is what makes alcohol poisoning so dangerous. The body has no way to speed up the process of clearing alcohol from the blood. There is no antidote. Once the alcohol is in your system, you have to wait it out, and the question is whether your body can sustain itself in the meantime.
Who Is Most at Risk
Binge drinking is the most common path to alcohol poisoning. For a typical adult, that means five or more drinks in about two hours for men, or four or more for women. Teenagers and young adults reach dangerous BAC levels even faster: as few as three drinks in the same window can push a teenage girl into the danger zone, and three to five drinks can do the same for boys, depending on age and body size.
Body weight, food intake, hydration, tolerance, and how quickly you drink all influence how fast your BAC rises. But tolerance is misleading. A person who drinks heavily may not feel as intoxicated at a given BAC, but their liver isn’t processing alcohol any faster. They can reach lethal concentrations while still appearing functional to people around them. Mixing alcohol with sedatives, opioids, or sleep medications also dramatically increases the risk because these substances compound alcohol’s effect on breathing.
Warning Signs to Recognize
The clearest signs that someone has crossed from severe intoxication into poisoning territory include:
- Breathing changes: fewer than eight breaths per minute, or long pauses (ten-plus seconds) between breaths
- Inability to stay conscious: passing out and not responding to shouting or shaking
- Seizures
- Repeated vomiting, especially while unconscious or semi-conscious
- Skin changes: blue-tinted lips or fingertips, gray or pale skin, clamminess
- No gag reflex: if you gently touch the back of someone’s throat and they don’t react, their protective reflexes are shutting down
- Extremely low body temperature
A person doesn’t need to show every symptom for the situation to be critical. Even one or two of these signs, particularly slow or irregular breathing or an inability to wake up, is enough to call emergency services immediately.
What to Do While Waiting for Help
Stay with the person. The greatest immediate risks are choking on vomit and stopping breathing, both of which can happen silently if no one is watching. If they’ve passed out, roll them onto their side into the recovery position so that if they vomit, it drains out of their mouth instead of pooling in their throat. Check that they’re still breathing.
Keep them warm with a blanket or jacket. Alcohol dilates blood vessels near the skin, which accelerates heat loss. Do not put them in a cold shower or bath. The shock can cause a dangerous drop in body temperature, and there’s a real risk of falling or losing consciousness in the water. Do not try to make them vomit. With a suppressed gag reflex, forced vomiting increases the chance of aspiration into the lungs. Coffee, food, and walking it off do nothing to lower BAC. The liver clears alcohol on a fixed schedule, and no home remedy changes that rate.
What Happens at the Hospital
Treatment for alcohol poisoning is mostly supportive, meaning the medical team keeps you alive and stable while your body processes the alcohol on its own. That typically involves monitoring your airway to prevent choking, providing oxygen if your breathing is too slow, and giving fluids through an IV to counter dehydration. Vitamins and glucose are often administered to prevent complications like dangerously low blood sugar or nutritional deficiencies that heavy drinking can trigger.
In cases involving methanol (found in some industrial products) or isopropyl alcohol (rubbing alcohol) rather than the ethanol in drinks, treatment may include dialysis to mechanically filter the toxic substance out of the blood more quickly.
Lasting Damage From a Single Episode
Surviving alcohol poisoning doesn’t always mean walking away unharmed. The most serious long-term risk comes from oxygen deprivation. When breathing slows or stops for even a few minutes, the brain begins to suffer. Depending on how long oxygen was restricted, this can result in lasting memory problems, difficulty with coordination, or cognitive impairment. Aspiration pneumonia, if it develops, can require weeks of treatment and sometimes causes permanent lung damage.
Seizures triggered during an episode can also cause injury, and repeated episodes of alcohol poisoning compound the risk of lasting neurological harm.
The Scale of the Problem
Alcohol poisoning deaths in the U.S. have risen sharply. CDC data shows that alcohol-related poisoning deaths climbed from roughly 14,900 per year during 2016 to 2017 to nearly 21,800 per year during 2020 to 2021, a 46% increase. Deaths from excessive alcohol use overall rose 29% in the same period, reaching an average of 178,000 per year. The increase hit women especially hard, with a 35% rise in female alcohol-attributable deaths compared to a 27% rise among men. Every age group saw increases.
These numbers include both pure alcohol poisoning and overdose deaths where a high BAC (0.10% or above) was a contributing factor alongside another substance. The trend reflects both rising rates of heavy drinking and the growing danger of alcohol combined with other drugs.