The honest answer: there’s no instant cure for a hangover. Your body needs time to break down the toxic byproducts of alcohol, and that process takes roughly 24 hours. But you can meaningfully reduce your misery by addressing the specific things alcohol did to your body overnight: it dehydrated you, drained your electrolytes, dropped your blood sugar, wrecked your sleep quality, and left your liver processing a backlog of toxins.
Why You Feel This Bad
When your liver breaks down alcohol, it produces a compound called acetaldehyde, which is essentially a poison. Your body converts it into a harmless substance and flushes it out, but that conversion takes time. While acetaldehyde is still circulating, it causes nausea, headache, and that general feeling of being hit by a truck. Hangover symptoms actually peak right around when your blood alcohol level drops back to zero, not while you’re still drunk. That’s why you can feel fine going to bed and terrible in the morning.
Darker liquors like bourbon and whiskey contain higher levels of congeners, which are chemical byproducts of fermentation. Research comparing bourbon drinkers to vodka drinkers found that bourbon produced noticeably worse hangovers, even at the same amount of alcohol consumed. If you’re piecing together why last night was particularly rough, what you drank matters alongside how much.
Alcohol also suppresses REM sleep and fragments the second half of your night. Once your body finishes metabolizing the alcohol, your sleep becomes lighter and more disrupted, which is why you might have woken up at 4 a.m. and couldn’t fall back asleep. That poor sleep compounds every other hangover symptom, especially the brain fog and fatigue.
Rehydrate With More Than Water
Alcohol is a diuretic, meaning it makes you urinate more than the volume of fluid you’re taking in. By morning, you’re likely dehydrated and low on sodium and potassium. Plain water helps restore fluid, but it doesn’t replace those lost electrolytes. An electrolyte drink or oral rehydration solution does both, which is why products like Pedialyte have become a popular hangover staple. Even a pinch of salt in water with a squeeze of citrus gets you closer to what your body actually needs.
That said, rehydration only addresses the dehydration piece. Other symptoms like nausea and headache are driven by acetaldehyde toxicity and inflammation, so don’t expect water alone to fix everything. It typically takes the full 24 hours for your body to clear the alcohol byproducts completely.
Eat Something, Especially Eggs
Alcohol interferes with your liver’s ability to release stored glucose, which is why your blood sugar can drop overnight. Low blood sugar contributes to the shakiness, weakness, fatigue, and mood changes that come with a hangover. Eating a meal helps stabilize those levels. Toast, bananas, oatmeal, or anything starchy and easy on your stomach works.
Eggs are a particularly good choice. They’re rich in an amino acid called cysteine, which helps your body neutralize acetaldehyde. In animal studies, cysteine dramatically improved survival rates in subjects given toxic doses of acetaldehyde. You don’t need to think of eggs as a miracle cure, but they give your liver useful raw materials to do its job faster. Pair them with something carb-heavy to cover the blood sugar angle too.
Choose the Right Pain Reliever
If your headache is unbearable, ibuprofen or aspirin can help with the inflammation driving it. Take either with food, since both can irritate an already-sensitive stomach.
Avoid acetaminophen (Tylenol) while your body is still processing alcohol. Your liver handles both acetaminophen and alcohol using the same pathways, and combining them increases the risk of liver damage. Cleveland Clinic advises that people who drink heavily should cap their acetaminophen at half the normal daily maximum. If you had a big night, it’s simpler to just skip it entirely and reach for ibuprofen instead.
Sleep It Off (for Real This Time)
The sleep you got while drunk was low quality. Alcohol initially pushes you into deep sleep but then causes fragmented, light sleep for the rest of the night, with frequent awakenings you may not even remember. Your brain missed out on the restorative stages it needed. A nap during the day, even a short one, lets your body catch up on the sleep architecture it lost. If you can afford to sleep in or nap for an hour in the afternoon, that’s one of the most effective things you can do.
What Doesn’t Work
“Hair of the dog,” or drinking more alcohol the next morning, is the most persistent hangover myth. It does temporarily suppress symptoms, but only by restarting the cycle. You’re delaying the hangover, not curing it. The physiology behind this trick is sometimes confused with alcohol withdrawal, which is a separate condition that only affects people with chronic alcohol dependence. For an ordinary hangover, more alcohol just means more acetaldehyde for your liver to process later.
Coffee is a mixed bag. Caffeine can help with the headache and grogginess, but it’s also a mild diuretic, which works against your rehydration efforts. A small cup is fine if it’s part of your routine. Just drink extra water alongside it.
Supplements That Show Some Promise
Red ginseng has the most interesting data. In a randomized study of 25 men, those who took a red ginseng drink after consuming alcohol reported significantly lower hangover severity scores the next day compared to a placebo group. They felt less tired, less thirsty, had fewer stomachaches, and had an easier time concentrating. The overall symptom score dropped by about 35%. This isn’t a guaranteed fix, but it’s one of the few remedies with controlled trial data behind it.
Prickly pear extract, taken before drinking, has also shown modest effects on nausea and dry mouth in small studies, though results are inconsistent. B vitamins and zinc have appeared in observational research as correlating with milder hangovers, but the evidence is weaker.
A Realistic Recovery Timeline
Most hangovers follow a predictable arc. Symptoms hit hardest in the morning when your blood alcohol reaches zero, peak over the next few hours, and gradually fade over the course of the day. The National Institute on Alcohol Abuse and Alcoholism notes that symptoms can last 24 hours or longer, depending on how much you drank. For a moderate hangover, you’ll likely feel functional by the afternoon if you hydrate, eat, and rest. A severe one from a heavy night can linger into the next day.
The most effective strategy combines several small interventions: electrolytes and water, a meal with protein and carbs, ibuprofen if needed, and rest. None of these is a cure on its own, but together they address the different mechanisms making you miserable while your liver finishes the cleanup.