There’s no instant cure for a hangover, but the right combination of rehydration, food, rest, and careful pain relief can cut your misery significantly shorter. Hangover symptoms peak once your blood alcohol level drops back to zero and typically last about 24 hours. Everything you do in that window is about helping your body clear toxic byproducts, replace lost fluids, and calm inflammation.
Why You Feel This Bad
Understanding what’s happening inside your body helps explain why certain remedies work and others don’t. When your liver processes alcohol, it first converts it into a toxic intermediate compound called acetaldehyde. At higher concentrations, acetaldehyde causes a rapid pulse, sweating, nausea, and vomiting. Even after your blood alcohol hits zero, the lingering effects of that toxic processing can persist into the hangover period.
Alcohol also suppresses a hormone that tells your kidneys to hold onto water. Without that signal, your kidneys dump fluid. Drinking roughly four standard drinks causes your body to eliminate 600 to 1,000 mL of water beyond what you took in. That’s up to a full quart of extra fluid loss, which explains the thirst, dizziness, weakness, and lightheadedness that define the morning after.
Rehydrate Before Anything Else
Replacing lost fluid is the single most effective thing you can do. Water works, but you also lost electrolytes (sodium, potassium, magnesium) through all that extra urination. An oral rehydration solution, coconut water, or a sports drink with electrolytes will restore your fluid balance faster than plain water alone. Aim to drink steadily rather than chugging a liter at once, which can trigger more nausea.
If you’re vomiting and can’t keep fluids down, take small sips every few minutes. Broth is especially useful here because it delivers sodium and is gentle on the stomach.
What to Eat (and Why It Helps)
Your body is still working to break down alcohol byproducts, and certain foods can support that process. Lab research has tested dozens of food items for their ability to boost the two liver enzymes responsible for clearing alcohol and acetaldehyde. The standouts are surprisingly specific.
Pear showed the strongest effect on the enzyme that clears acetaldehyde, boosting its activity by about 91%. Cucumber and tomato also performed well, enhancing that same enzyme by 87% and 41% respectively. Watermelon increased the activity of the first-step enzyme by 67%. These are in-vitro findings, meaning they were measured in a lab rather than in hungover humans, but they offer a reasonable basis for choosing what to eat.
On the protein and dairy side, eggs and cheese both showed meaningful enzyme-boosting activity. Buttermilk and probiotic drinks helped modestly with the acetaldehyde-clearing enzyme. Simple sugars like glucose and fructose have been observed to ease hangover symptoms through a separate mechanism that helps your body detoxify alcohol, even though they don’t work through the same liver enzymes.
A practical hangover meal might look like eggs with toast (for protein and glucose), a glass of pear or orange juice, and some sliced tomato or cucumber on the side. You’re not just eating for comfort. You’re giving your liver the raw materials it needs.
Pain Relief: Choose Carefully
A headache is one of the most common hangover symptoms, and reaching for a painkiller is instinctive. But not all over-the-counter options are equally safe after drinking.
Acetaminophen (Tylenol) is the riskiest choice. Your liver is already working hard to process alcohol byproducts, and combining acetaminophen with alcohol can cause serious liver damage. This applies even after you’ve stopped drinking, because your liver is still metabolically stressed during a hangover.
Ibuprofen (Advil, Motrin) or aspirin are generally safer options, though both can irritate an already sensitive stomach. If you have any history of stomach ulcers or gastritis, proceed with extra caution. Taking ibuprofen with food helps reduce that stomach irritation.
Your Drink Choice Matters
If you’re reading this for next time, what you drink affects how bad the hangover gets. Darker spirits like whiskey, bourbon, and red wine contain far higher levels of congeners, which are chemical byproducts of fermentation. Whiskey contains up to 1,247 mg/L of certain congeners, while vodka contains as little as zero for some of those same compounds. Across the board, vodka’s congener concentrations are a fraction of whiskey’s.
Congeners give dark liquors their flavor and color, but they also give your liver extra work. Sticking to lighter-colored spirits like vodka or gin, or clear mixers, tends to produce milder hangovers at equivalent alcohol doses. This doesn’t make those drinks hangover-proof. It just removes one compounding factor.
Supplements That Show Promise
Prickly pear extract is one of the few supplements tested in a proper clinical trial. In a double-blind, placebo-controlled study of 64 volunteers, taking prickly pear extract five hours before drinking significantly reduced nausea, dry mouth, and loss of appetite the next day. The risk of a severe hangover was cut by about 62% compared to placebo. The catch: you need to take it before you drink, not after.
Dihydromyricetin (DHM), a compound from the Japanese raisin tree, has shown strong results in animal studies, where it reduced signs of alcohol intoxication and withdrawal and appeared to lower alcohol consumption over time. Human clinical data is still limited, but DHM has become a popular ingredient in commercial hangover supplements.
What Won’t Work
“Hair of the dog,” or drinking more alcohol the next morning, delays your hangover rather than fixing it. You’re simply restarting the cycle and pushing the inevitable crash further down the road. Coffee can help with grogginess but worsens dehydration if you don’t drink water alongside it.
IV drip bars have become trendy in some cities, offering intravenous fluids and vitamins for hangover relief. They do rehydrate you quickly, but for a standard hangover, oral rehydration achieves the same result at a fraction of the cost. Your gut absorbs fluids efficiently when you’re mildly to moderately dehydrated.
When a Hangover Isn’t Just a Hangover
Most hangovers are deeply unpleasant but not dangerous. Alcohol poisoning, however, is a medical emergency, and the symptoms can overlap with a bad hangover in the early stages. The key warning signs are confusion, slow or irregular breathing, repeated vomiting, pale or cold skin, seizures, and unconsciousness. If someone shows any of these symptoms, especially irregular breathing or inability to stay conscious, call emergency services. A person who has passed out from drinking can still die from alcohol already in their system as it continues to absorb.