There’s no instant cure for a hangover, but you can shorten the misery significantly by targeting what’s actually going wrong in your body: dehydration, inflammation, low blood sugar, and poor sleep. Most hangovers peak about 14 hours after you started drinking and clear within 21 hours, so the goal is to compress that timeline and reduce symptom intensity along the way.
Why You Feel This Bad
A hangover kicks in as your blood alcohol level drops back toward zero. Your liver broke the alcohol down into a toxic byproduct that triggers inflammation throughout your body. Your immune system responds by releasing signaling molecules called cytokines, which interact with your brain and produce that familiar constellation of headache, nausea, fatigue, and brain fog. On top of that, alcohol suppresses a hormone that tells your kidneys to hold onto water, so you’ve been losing fluids all night. And because alcohol disrupts your body’s ability to regulate blood sugar, you may wake up with levels low enough to cause shakiness, weakness, and irritability.
Understanding these mechanisms matters because it tells you exactly what to fix: replace fluids, calm inflammation, restore blood sugar, and give your brain the conditions it needs to recover.
Rehydrate Aggressively
Water alone is fine, but it’s not the fastest option. You’ve lost electrolytes along with all that fluid, so drinks containing sodium and potassium will rehydrate you more effectively. Sports drinks, coconut water, or an oral rehydration solution all work. Broth is another strong choice because it delivers sodium, water, and a small amount of calories in a form that’s easy on a queasy stomach.
Aim to drink 16 to 24 ounces within the first hour of waking up, then keep sipping steadily. You’ll know you’re catching up when your urine lightens from dark yellow to pale straw.
Eat the Right Foods Early
Alcohol interferes with your liver’s ability to release stored glucose, which is why you feel shaky and drained the morning after. Your body needs fast-absorbing carbohydrates to bring blood sugar back up. Juice, toast with honey, crackers, or a banana are good first choices. The CDC recommends about 15 grams of simple carbohydrates as a starting point for low blood sugar recovery, roughly equivalent to half a cup of juice or a tablespoon of honey.
Once the initial nausea passes, eat a more substantial meal. Eggs are a popular hangover food for a reason: they contain an amino acid called L-cysteine that helps your body process alcohol’s toxic byproducts. A randomized trial published in Alcohol and Alcoholism found that 1,200 mg of supplemental L-cysteine significantly reduced hangover nausea and headache. You won’t get that much from a plate of eggs alone, but combining real food with fluids and rest still moves the needle.
Avoid greasy, heavy meals right away. Fat slows digestion and can make nausea worse. Save the burger for later in the day when your stomach has settled.
Choose the Right Pain Reliever
Headache is usually the symptom people want gone first. Your instinct might be to reach for whatever’s in the medicine cabinet, but the choice matters.
Acetaminophen (Tylenol) is risky after heavy drinking. Your liver is already working overtime to clear alcohol byproducts, and acetaminophen adds to that burden. Overdose is the most common cause of acute liver failure, and alcohol lowers the threshold at which acetaminophen becomes dangerous.
Anti-inflammatory pain relievers like ibuprofen (Advil) or naproxen (Aleve) are generally the better option for a hangover headache because they directly target the inflammation driving your symptoms. That said, they can irritate an already-sensitive stomach, so take them with food and water rather than on an empty stomach.
Sleep More If You Can
Alcohol disrupts your sleep architecture. Even if you were “asleep” for eight hours, you likely got far less restorative deep sleep than normal. Your brain didn’t get the recovery time it needed, which is a major reason for the foggy, exhausted feeling. If your schedule allows it, going back to sleep for even 90 minutes (one full sleep cycle) can make a noticeable difference in how you feel for the rest of the day.
What Doesn’t Work
“Hair of the dog,” or drinking more alcohol the next morning, is probably the most persistent hangover myth. It does temporarily suppress symptoms, but only by reintroducing the substance your body is trying to clear. A hangover is not the same as alcohol withdrawal. Withdrawal happens in people with chronic alcohol dependence. For everyone else, another drink just delays recovery and adds to the total toxic load your liver has to process.
Coffee is a mixed bag. Caffeine can relieve a headache and make you feel more alert, but it’s also a mild diuretic that can worsen dehydration. If you’re a regular coffee drinker and skipping it would give you a caffeine withdrawal headache on top of everything else, have a small cup alongside plenty of water. Just don’t rely on it as a cure.
How Long Recovery Actually Takes
In a study tracking 23 men after heavy drinking (about five to six drinks for an average-sized person), hangover severity began rising 8 hours after their first drink, peaked at the 14-hour mark, and dropped rapidly after 16 hours. By 21 hours post-drinking, most subjects reported little to no symptoms. So if you stopped drinking at midnight, expect the worst around 2 p.m. the next day, with meaningful relief by early evening.
The strategies above can compress this timeline, but they won’t eliminate it. Your liver clears alcohol at a fixed rate, and nothing speeds that up. What you’re really doing is managing the downstream damage (dehydration, inflammation, low blood sugar) so you feel functional while your body finishes the job.
Prevent a Worse Hangover Next Time
What you drink matters almost as much as how much. Darker liquors like bourbon, brandy, and whiskey contain high levels of congeners, chemical byproducts of fermentation that intensify hangover symptoms. Bourbon is particularly high in these compounds, with isobutanol concentrations two to three times higher than Scotch whisky. Vodka has the lowest congener content of any spirit, and lighter-colored drinks generally cause less severe hangovers than darker ones.
Eating a full meal before drinking slows alcohol absorption. Alternating alcoholic drinks with water throughout the night reduces total fluid loss. And stopping earlier in the evening gives your body a head start on clearing alcohol before you fall asleep, which means better sleep quality and a shorter hangover window the next day.