The most effective hangover remedies target what’s actually going wrong in your body: dehydration, inflammation, low blood sugar, and poor sleep. No single cure exists, but a combination of rehydration, the right pain reliever, food, and rest can cut a hangover significantly shorter. The average hangover lasts about 18 hours after your last drink, with symptoms peaking roughly 14 hours after you stop drinking. That means if you stop at midnight, you’ll likely feel worst around 2 p.m. the next day and may not feel fully normal until evening.
Why Hangovers Feel So Bad
Your liver breaks down alcohol in two steps. First, it converts ethanol into a toxic compound called acetaldehyde. Then a second enzyme converts that into harmless acetic acid. The problem is that second step can’t always keep up, so acetaldehyde builds up in your system. This triggers inflammation throughout your body, and the inflammatory molecules your immune system releases actually slow down both of those liver enzymes even further. It’s a feedback loop: inflammation makes your liver less efficient at clearing the toxin that’s causing the inflammation.
On top of that, alcohol suppresses your deep, restorative sleep during the first half of the night, then causes fragmented, restless sleep in the second half as your body rebounds. The brain wave patterns associated with memory and mental sharpness are disrupted, which is why you wake up foggy and slow even if you technically slept for eight hours. Alcohol also blocks your liver from producing new glucose, causing your blood sugar to drop. That low blood sugar contributes to the dizziness, confusion, shakiness, and fatigue that overlap with feeling drunk itself.
Rehydrate With More Than Water
Alcohol is a diuretic, meaning it pulls fluid and electrolytes out of your body faster than normal. Plain water helps, but it doesn’t replace the sodium, potassium, and other minerals you’ve lost. Sports drinks, coconut water, or oral rehydration solutions work better because they restore electrolytes alongside fluid. Broth or soup serves the same purpose and has the added benefit of being easy on a sensitive stomach.
Start drinking fluids as soon as you wake up and keep sipping throughout the day. If you feel nauseous, take small, frequent sips rather than trying to gulp down a full glass. Cold or room-temperature fluids tend to be easier to tolerate than hot ones when nausea is involved.
Choose the Right Pain Reliever
Headache is usually the most prominent hangover symptom, and reaching for a pain reliever is instinctive. But which one matters. Ibuprofen (Advil, Motrin) or naproxen (Aleve) are anti-inflammatory, which directly addresses the inflammatory cascade driving your hangover. However, these drugs can damage the liver when combined with alcohol, especially with frequent use. If you’re otherwise healthy and use them occasionally, a standard dose the morning after is generally considered acceptable.
Acetaminophen (Tylenol) is a riskier choice. It’s safe at proper doses under normal circumstances, but overdose is the most common cause of acute liver failure. Because your liver is already working overtime to clear alcohol byproducts, adding acetaminophen to the mix increases the strain. If you’ve been drinking heavily, ibuprofen is the safer option for most people.
Eat to Restore Blood Sugar
Your liver normally releases stored glucose to keep your blood sugar stable, but alcohol disrupts that process. Substances formed during alcohol breakdown block the liver from making new glucose, so your levels can drop well below normal. This is responsible for much of the fatigue, lightheadedness, and brain fog you feel the next day.
Eating carbohydrate-rich foods helps correct this. Toast, crackers, bananas, oatmeal, or rice are all good options because they’re gentle on the stomach and raise blood sugar steadily. Adding some protein (eggs, yogurt, peanut butter) helps sustain that blood sugar rise rather than letting it spike and crash. Fructose from fruit or juice may also help your body metabolize alcohol byproducts slightly faster, though the effect is modest.
Sleep Is the Most Underrated Fix
Alcohol wrecks your sleep architecture even when it seems to knock you out quickly. It shortens the time it takes to fall asleep and initially increases deep sleep, but it suppresses REM sleep during the first half of the night. Once your blood alcohol level drops, REM sleep rebounds, causing vivid dreams, frequent awakenings, and lighter sleep overall. The brain activity patterns that support memory and cognitive restoration are disrupted throughout the night.
This means the sleep you got while drinking was low quality, and your brain still needs the restorative cycles it missed. A nap the next day, even 20 to 90 minutes, can partially make up for this deficit. If you can sleep in, do it. Rest is the one intervention that directly addresses the neurological side of a hangover rather than just masking symptoms.
Supplements That Show Promise
Dihydromyricetin (DHM), a compound extracted from the Japanese raisin tree, has gained attention as a hangover supplement. Research from USC found that DHM activates a cascade of mechanisms that speed alcohol clearance: it triggers the liver to produce more of the enzymes that break down both ethanol and its toxic byproduct acetaldehyde, and it boosts the efficiency of those enzymes so they work faster. In practical terms, it helps your body clear alcohol and its damaging metabolites more quickly. DHM is widely available as an over-the-counter supplement, though optimal dosing for humans isn’t firmly established.
B vitamins and zinc have also shown some association with reduced hangover severity in survey-based research. Alcohol depletes both, so replenishing them makes biological sense even if the evidence is less robust than for rehydration or sleep. A standard B-complex vitamin the morning after is unlikely to hurt and may help.
What Doesn’t Work
“Hair of the dog,” or drinking more alcohol the next morning, delays the hangover rather than preventing it. It temporarily raises your blood alcohol level, which masks withdrawal-like symptoms, but those symptoms return once the new alcohol is metabolized. You’re just pushing the timeline back.
Coffee can help with the headache if you’re a regular caffeine drinker (since caffeine withdrawal adds to headache severity), but it’s also a diuretic and can worsen dehydration. If you drink coffee, pair it with extra water. Greasy food is a popular hangover tradition, but there’s no evidence it speeds recovery. Fat slows alcohol absorption when eaten before or during drinking, but the morning after, the alcohol is already in your system. Simple carbohydrates are more useful at that point.
Timing Your Recovery
Most hangovers follow a predictable arc. Symptoms typically begin while you’re still asleep, as your blood alcohol approaches zero. They peak about 14 hours after your last drink and resolve, on average, about 18 hours after you stop drinking, which translates to roughly 12 hours after waking up. For the majority of people, hangovers last between 14 and 23 hours total.
This timeline means that if your last drink was at 1 a.m., you can expect to feel worst around 3 p.m. and start feeling normal somewhere between 3 p.m. and midnight. The severity and exact duration depend on how much you drank, your body weight, how hydrated you were beforehand, and your individual biology. Heavier drinking episodes produce longer, more intense hangovers, and no amount of remedies can fully override that relationship. The interventions above shorten the misery and reduce symptom intensity, but time remains the only complete cure.