The fastest way to get rid of a hangover is to rehydrate, eat the right foods, rest, and manage pain safely. There’s no instant cure, but the right combination of steps can shorten the misery from a full day down to a few hours. Hangover symptoms typically begin six to eight hours after drinking, once your blood alcohol level drops sharply, and ease up over the following eight to 24 hours.
What’s Actually Happening in Your Body
When you drink, your liver processes about 90% of the alcohol. Enzymes break ethanol down into a toxic byproduct called acetaldehyde, which is then converted into harmless acetate and eventually leaves your body through urine and breath. The problem is that heavy drinking overwhelms this system. Your liver activates a backup pathway that generates a flood of harmful molecules (reactive oxygen species) and depletes your body’s natural antioxidant defenses. The result is inflammation, oxidative stress, and the headaches, nausea, fatigue, and stomach pain you’re feeling right now.
Alcohol also wrecks your sleep. On a normal night, your brain cycles through deep and REM sleep six or seven times. After heavy drinking, that drops to two or three cycles. You fall asleep faster, but the second half of the night becomes fragmented, with multiple awakenings and very light sleep. The worse your hangover, the less REM sleep you got. That’s why you can sleep eight hours after drinking and still feel exhausted.
Rehydrate With More Than Water
Alcohol is a diuretic, meaning it pulls fluid out of your body faster than you’re taking it in. By morning, you’re dehydrated, and that accounts for a significant share of the headache and fatigue. Plain water helps, but it doesn’t replace the electrolytes you lost. Drinks with sodium and potassium, like broth, coconut water, or an oral rehydration solution, work faster because they help your body actually absorb and retain the fluid. Sports drinks are fine too, though they tend to be high in sugar.
Sip steadily rather than chugging a liter at once. Your stomach is already irritated, and flooding it can trigger more nausea. Aim to drink at least a few glasses over the first couple of hours after waking.
Eat the Right Foods
Alcohol interferes with your liver’s ability to produce glucose, which is why hangovers often come with shakiness, weakness, and brain fog similar to low blood sugar. The fix is food, but the type matters. Reach for complex carbohydrates like toast, oatmeal, or crackers rather than sugary options. Whole grains, fruits, and vegetables stabilize your blood sugar more gradually and avoid the crash that simple sugars can cause on an empty, irritated stomach.
Eggs are a particularly good choice. They’re rich in an amino acid called L-cysteine, which binds directly to acetaldehyde, the toxic byproduct your liver is struggling to clear. A study in the journal Alcohol and Alcoholism found that L-cysteine supplementation reduced hangover symptoms like nausea, headache, and anxiety. You don’t need a supplement. A couple of eggs on toast gives you the amino acid along with the carbohydrates and protein your body needs to recover. Bananas are another smart pick because they’re easy on the stomach and loaded with potassium.
Choose the Right Pain Reliever
If your headache is unbearable, an anti-inflammatory painkiller like ibuprofen is the safer option after drinking. It reduces the inflammation driving your symptoms. Be aware that it can be hard on your stomach and kidneys, so take it with food and water, and skip it if you have gastrointestinal or kidney problems.
Acetaminophen (Tylenol) is riskier. A single normal dose after one night of drinking is unlikely to cause liver damage for most people. But here’s the concern: heavy drinking depletes the same antioxidant (glutathione) that your liver needs to safely process acetaminophen. If you drink regularly or heavily, combining the two puts real stress on your liver. Acetaminophen toxicity accounts for nearly half of acute liver failure cases in North America. If you have any history of liver disease or drink frequently, avoid it entirely after a night out.
Sleep It Off (Properly)
Your body did not get quality rest last night, even if you were unconscious for hours. The fragmented, REM-deprived sleep you got after drinking left your brain under-recovered. If you can, go back to sleep or nap once you’ve had water and a small meal. This second round of sleep, now that alcohol has cleared your system, will be far more restorative than whatever happened overnight. Even a 90-minute nap can make a noticeable difference in how you feel by the afternoon.
What Won’t Help
“Hair of the dog,” or drinking more alcohol in the morning, delays the hangover rather than curing it. You’re simply re-introducing the substance your body is trying to clear, which pushes the same cycle of dehydration, inflammation, and poor sleep further down the road. Coffee is a mixed bag. Caffeine can temporarily ease a headache and make you feel more alert, but it’s also a diuretic and can worsen dehydration and stomach irritation. If you drink coffee, have it alongside water and food, not instead of them.
How to 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 make hangovers measurably worse. Red wine is also high in these compounds. Studies have shown that people drinking bourbon report significantly more severe hangovers than those drinking the same amount of vodka, which has the lowest congener content. Beer also tends to produce milder hangovers than dark spirits.
Eating before and during drinking slows alcohol absorption, giving your liver more time to process each dose. Alternating alcoholic drinks with water throughout the night reduces total alcohol intake and keeps dehydration from compounding. These two habits alone, eating with your drinks and pacing with water, do more to prevent a hangover than any morning-after remedy.