An alcohol overdose, often called alcohol poisoning, happens when you drink enough alcohol to shut down the parts of your brain that control basic life-sustaining functions like breathing, heart rate, and temperature regulation. It is a medical emergency that can be fatal. A blood alcohol concentration (BAC) between 0.30% and 0.40% typically puts a person into alcohol poisoning territory, and a BAC above 0.40% carries a serious risk of coma and death.
How Alcohol Becomes Life-Threatening
Alcohol is a central nervous system depressant. In small amounts, it slows reaction time and lowers inhibitions. In large amounts, it suppresses the brain’s ability to manage involuntary functions you never think about: the rhythm of your breathing, your gag reflex, your body temperature, your heart rate. When enough alcohol accumulates in the bloodstream, these systems can fail one by one.
One critical detail many people don’t realize is that your blood alcohol level can keep rising even after you stop drinking or pass out. Alcohol continues to absorb from the stomach and intestines into the bloodstream well after the last drink. This means someone who seems “just drunk” when they lie down can slide into a medical crisis over the next hour without consuming another drop.
Signs of an Alcohol Overdose
The symptoms exist on a spectrum, and they can escalate quickly. Early warning signs include confusion, repeated vomiting, and extreme drowsiness. As poisoning worsens, a person may become unresponsive, breathe very slowly (fewer than eight breaths per minute), or have long gaps between breaths. Their skin may feel cold and clammy, or take on a bluish or pale tint. Seizures can occur when blood sugar drops dangerously low. Body temperature can fall far enough to trigger cardiac arrest.
The most dangerous scenario is one that looks deceptively calm: a person who has passed out and cannot be woken up. Unconsciousness combined with a suppressed gag reflex creates the risk of choking on vomit, which can block the airway and cause suffocation. This is one of the most common ways alcohol poisoning kills.
What Makes Some People More Vulnerable
Body size, tolerance, food intake, and the speed of drinking all influence how quickly BAC rises. But the single biggest risk multiplier is mixing alcohol with other substances that also depress the central nervous system. Benzodiazepines (commonly prescribed for anxiety and sleep) and opioids (including prescription painkillers and codeine) are especially dangerous. Combining either of these drug classes with alcohol can cause overdose and death at alcohol levels that might otherwise not be fatal on their own. The drugs compound each other’s effects on breathing and consciousness.
Binge drinking is the most direct path to alcohol poisoning for otherwise healthy people. Drinking a large quantity in a short window overwhelms the liver’s ability to process alcohol, which typically clears roughly one standard drink per hour. Shots, drinking games, and chugging raise BAC far faster than the body can compensate.
What to Do If Someone Is in Trouble
If someone is unresponsive or showing signs of alcohol poisoning, call emergency services immediately. While waiting for help, roll the person onto their left side into what’s known as the recovery position: their head supported by their right hand, their right knee bent forward to keep them from rolling onto their stomach. This position keeps the airway clear so that if they vomit, it drains out rather than blocking their breathing. Do not leave them alone.
Try to find out if they took any other substances and how much they drank, so you can relay that information to paramedics. Do not try to make them vomit, give them coffee, or put them in a cold shower. None of these folk remedies address the actual danger, and some can make things worse.
What Happens at the Hospital
Emergency treatment focuses on keeping the person alive while their body processes the alcohol. That typically means ensuring they can breathe, maintaining hydration, correcting electrolyte imbalances, and monitoring for complications like seizures or dangerously low body temperature. In some cases, if someone arrives very shortly after heavy drinking (within 30 to 60 minutes), medical teams may attempt to reduce the amount of alcohol still sitting in the stomach. Beyond that window, the priority shifts to supportive care and close observation until blood alcohol levels drop to a safe range.
The Scope of Alcohol-Related Deaths
Alcohol-induced deaths have been rising sharply. Between 2019 and 2020, the age-adjusted death rate jumped 26%, from 10.4 to 13.1 per 100,000 people. Adults aged 55 to 64 face the highest rates: 59.0 per 100,000 for men and 20.1 per 100,000 for women in that age group. While younger adults often get the most attention in discussions about binge drinking, middle-aged and older adults are dying from alcohol at significantly higher rates. Chronic heavy drinking, combined with the medications more commonly prescribed later in life, likely contributes to this pattern.
Alcohol overdose is not something that only happens to inexperienced drinkers at college parties. It can happen to anyone whose blood alcohol climbs past the body’s ability to cope, whether from a single episode of heavy drinking or from the compounding effect of alcohol mixed with other depressants.