There is no way to speed up sobering up. Your liver breaks down alcohol at a fixed rate of about 0.015 BAC per hour, which works out to roughly one standard drink per hour. No food, no coffee, no cold shower, no supplement will change that rate. The only thing that actually sobers you up is time.
Why Nothing Speeds It Up
Your liver uses a specific enzyme to convert alcohol into a byproduct called acetaldehyde, then breaks that down further so your body can eliminate it. This process runs at a near-constant speed regardless of what you do after drinking. If your BAC is 0.08 (the legal driving limit in most U.S. states), it will take roughly five to six hours to reach 0.00.
That timeline can shift slightly based on your body weight, sex, and how well your liver functions, but the differences are small. A larger person may process alcohol marginally faster than a smaller person, and biological sex affects the concentration of the enzyme involved. None of these factors are things you can change in the moment.
Coffee, Cold Showers, and Exercise Don’t Work
Caffeine does not reduce the effects of alcohol on your body. It can make you feel more alert, which creates the dangerous illusion that you’re less impaired than you actually are. The CDC warns that this false sense of sobriety can lead people to drink more or take risks they otherwise wouldn’t, like driving. Your coordination, reaction time, and judgment remain just as compromised whether or not you’ve had an espresso.
Cold showers and exercise fall into the same category. They may jolt you into feeling more awake, but your BAC stays exactly where it was. The Virginia Department of Forensic Science puts it plainly: only the passage of time will sober someone up.
What You Can Actually Do While You Wait
While you can’t speed up the process, you can make the waiting period more comfortable and safer for your body.
- Drink water. Alcohol is a diuretic, so you’re losing fluids faster than normal. Water won’t lower your BAC, but it helps with dehydration, which is responsible for a lot of the headache and nausea you’ll feel later.
- Eat something. Food eaten after drinking won’t slow absorption the way a meal before drinking can, but it may settle your stomach and help you feel steadier.
- Rest somewhere safe. Your body does continue processing alcohol while you sleep. The catch is that alcohol disrupts your sleep quality significantly, suppressing the deeper, more restorative stages of sleep, especially in the second half of the night. You’ll sleep, but you won’t sleep well. Still, lying down in a safe place is better than trying to push through the night.
- Stop drinking. This sounds obvious, but every additional drink resets the clock. If you stop now, your BAC starts its slow, steady decline.
How Long It Takes at Different BAC Levels
At a rate of 0.015 BAC per hour, here’s roughly how long it takes to reach zero from common levels:
- BAC 0.04 (two drinks for many people): about 2.5 to 3 hours
- BAC 0.08 (legal limit): about 5 to 6 hours
- BAC 0.12 (noticeably drunk): about 8 hours
- BAC 0.16 (heavily intoxicated): about 10 to 11 hours
These are estimates based on averages. Alcohol can also remain detectable in blood tests for up to 12 hours after your last drink, even if you feel fine. If you drank heavily the night before, you may still be over the legal limit the next morning.
What About IV Drips and Hangover Clinics
Hangover IV clinics have become popular in recent years. These drips typically contain fluids, electrolytes, vitamins, and sometimes anti-nausea medication. They can help with dehydration and ease hangover symptoms like headache and nausea. What they do not do is lower your BAC or make your liver work faster. Sports drinks and oral rehydration products offer similar benefits for dehydration at a fraction of the cost. If your main goal is to feel less miserable while you wait, hydration in any form helps. If your goal is to be sober sooner, nothing a clinic offers will accomplish that.
When Someone Needs Emergency Help
If you’re looking up how to sober someone else up, it’s important to know the difference between being drunk and being in danger. Alcohol overdose is a medical emergency, and the signs include:
- Confusion or stupor beyond normal drunkenness
- Inability to wake up or stay conscious
- Vomiting, especially while semiconscious
- Seizures
- Slow breathing (fewer than 8 breaths per minute) or gaps of 10 seconds or more between breaths
- Clammy skin, bluish skin color, or extreme paleness
- Slow heart rate
If you see any of these signs, call 911 immediately. BAC can continue to rise even after a person stops drinking, because alcohol in the stomach is still being absorbed.
While waiting for help, place the person in the recovery position: roll them onto their side with their head tilted slightly back to keep the airway open, and tuck their top hand under their cheek to keep their face off the floor. This prevents choking if they vomit. Check on them frequently. Never leave a severely intoxicated person alone on their back.