There is no way to speed up sobering. The liver processes alcohol at a fixed rate of roughly one standard drink per hour, and nothing you do, no trick, no remedy, will change that. What you can do is keep the person safe and comfortable while their body does the work. That matters more than most people realize, because a heavily intoxicated person faces real physical risks while they wait.
Why Coffee and Cold Showers Don’t Work
The most common “sobering up” strategies, strong coffee, cold showers, fresh air, exercise, have zero effect on blood alcohol levels. The Hazelden Betty Ford Foundation puts it plainly: the body rids itself of alcohol on a fixed schedule. A cold shower might make someone feel more alert for a few minutes, but that alertness is misleading. Their coordination, judgment, and reaction time remain just as impaired. Caffeine can actually make things worse by masking how drunk the person feels, which may lead them to think they’re fine to drive or make decisions when they’re not.
Water doesn’t speed up alcohol processing either. It helps with dehydration, which is a real concern since alcohol makes you urinate more, but it won’t lower someone’s blood alcohol content any faster. The same goes for eating food after drinking. Food slows alcohol absorption if eaten before or during drinking, but once alcohol is already in the bloodstream, a meal won’t help clear it.
What’s Actually Happening in the Body
After someone stops drinking, alcohol takes 60 to 90 minutes to reach its peak level in the blood. This means a person can actually get drunker after their last drink, which catches a lot of people off guard. From there, the liver breaks down alcohol at that steady one-drink-per-hour pace using specialized enzymes. Men tend to have more of these enzymes in the stomach lining, which is one reason alcohol affects men and women differently even at the same body weight.
A “standard drink” is 12 ounces of regular beer, 5 ounces of wine, or 1.5 ounces of liquor. If someone had six drinks over a couple of hours, you’re looking at roughly five to six hours before they’re close to sober. The math is straightforward but the wait feels long, and there’s no shortcut around it.
What You Can Actually Do to Help
Since you can’t accelerate the process, focus on comfort and safety. Give them water in small sips. This won’t sober them up, but alcohol causes dehydration that contributes to nausea and headaches. If they can eat, simple carbohydrates or a light snack can help settle their stomach and maintain blood sugar, which alcohol tends to lower.
Keep them warm. Alcohol dilates blood vessels near the skin, which makes people feel warm while actually losing body heat faster than normal. A blanket or jacket helps prevent their core temperature from dropping, especially if they’re outside or in a cold room.
Stay with them. The most important thing you can do is simply be present. An intoxicated person’s judgment is unreliable, and they may try to drive, wander into a dangerous situation, or not recognize when something is wrong physically. Your job is to be the judgment they’re temporarily missing.
If They Need to Sleep It Off
Never leave a heavily intoxicated person sleeping on their back. Vomiting while unconscious or semi-conscious is one of the most common ways alcohol kills, because it blocks the airway. At high levels of intoxication, the gag reflex that normally prevents choking can stop working entirely.
Place them in the recovery position instead. With the person on their back, kneel beside them. Extend the arm closest to you out at a right angle with the palm facing up. Take their other arm and fold it so the back of their hand rests against the cheek nearest you, holding it there. With your free hand, bend their far knee to a right angle. Then carefully roll them toward you by pulling on that bent knee. Their head should end up resting on their folded hand, and the bent leg keeps them from rolling onto their stomach. Gently tilt their head back slightly and lift their chin to keep the airway open.
Check on them regularly. Alcohol levels can still be rising if they drank recently, so someone who seemed okay 20 minutes ago can deteriorate.
Signs That Need Emergency Help
Alcohol poisoning is a medical emergency, and it kills. The line between “very drunk” and “dangerously poisoned” isn’t always obvious, so watch for these specific warning signs:
- Slow breathing: fewer than 8 breaths per minute
- Irregular breathing: gaps of 10 seconds or more between breaths
- Skin changes: blue, gray, or unusually pale skin, especially around the lips and fingertips
- Low body temperature: skin that feels cold and clammy to the touch
- Mental confusion beyond typical drunkenness, or inability to stay conscious
- Seizures
- Vomiting while unconscious or semi-conscious
If you see any of these, call emergency services immediately. Don’t wait to see if they improve. Don’t try to “walk it off” or give them coffee. A person with alcohol poisoning needs medical intervention that you cannot provide at home. While waiting for help, place them in the recovery position and stay with them.
How Long Until They’re Actually Sober
The timeline depends entirely on how much they drank. Count back the number of standard drinks, subtract roughly one per hour since they started drinking, and what’s left is approximately how many hours you’re waiting. Someone who had eight drinks over three hours has about five drinks’ worth of alcohol still being processed, which means another five hours or so.
Keep in mind that “sober enough to feel normal” and “back to zero” are different things. Alcohol’s half-life is four to five hours, meaning it takes about that long to cut the remaining alcohol in half. Full clearance of a heavy drinking session can take up to 25 hours, according to the Cleveland Clinic. Coordination and reaction time can remain impaired even when someone feels fine, so err on the side of waiting longer before they drive or do anything requiring sharp reflexes.
A Note on Fructose
There is one substance with some scientific backing for speeding alcohol metabolism: fructose, the sugar found in fruit and honey. Lab studies on liver cells have shown fructose can increase the rate of alcohol breakdown by over 50%. However, this research has been conducted primarily in isolated cells and animals, not in real-world human drinking scenarios. The practical effect in a living person is likely much smaller and not enough to meaningfully shorten your wait. Eating some fruit or having juice certainly won’t hurt and may help with low blood sugar, but don’t count on it as a sobering strategy.