The fastest way to help a hangover is to rehydrate with an electrolyte-containing drink, eat something, and take ibuprofen (not acetaminophen) for headache and body aches. Hangover symptoms peak right as your blood alcohol level drops back to zero and can last 24 hours or longer, so the sooner you start these steps, the shorter your misery window.
There’s no instant cure, but understanding what’s actually happening in your body helps you pick the strategies that work and skip the ones that don’t.
Why You Feel This Bad
A hangover isn’t just dehydration, though that’s part of it. When your liver breaks down alcohol, it produces a toxic byproduct called acetaldehyde. Your body normally clears this quickly, but after heavy drinking, the cleanup system gets overwhelmed. The backup process your liver uses to handle the overflow also generates free radicals, which are unstable molecules that damage cells and trigger inflammation throughout your body.
That inflammation is measurable. Your body ramps up the same immune signals it uses to fight infections, which is why a hangover can feel like coming down with the flu: headache, nausea, fatigue, muscle aches, brain fog. Alcohol also depletes key nutrients your body needs to function, particularly B vitamins. Ethanol directly accelerates the breakdown of vitamin B6 inside liver cells, even in people who get enough B6 in their diet. This depletion compounds the fatigue and cognitive sluggishness you’re already feeling.
Rehydrate With More Than Water
Alcohol is a diuretic, meaning it makes you urinate far more fluid than you’re taking in. By the time you wake up hungover, you’ve lost significant water and electrolytes, particularly sodium and potassium. Plain water replaces the fluid but not the electrolytes, which is why chugging a glass of water often doesn’t make you feel much better on its own.
Oral rehydration solutions like Pedialyte are formulated with a specific balance of sugar, salt, and water that helps your intestines absorb fluid more efficiently. Sports drinks work too, though they tend to have more sugar and less sodium. If you don’t have either on hand, a glass of water with a pinch of salt and a splash of juice gets you closer to what your body needs. Coconut water is another reasonable option since it’s naturally high in potassium.
Drink steadily rather than all at once. Your stomach is already irritated, and flooding it with liquid can make nausea worse.
What to Eat (and Why It Matters)
Eating might be the last thing you want to do, but food helps in several ways. It stabilizes blood sugar, which alcohol disrupts overnight. It provides amino acids your body uses to process leftover toxins. And it physically settles your stomach by absorbing acid.
Eggs are one of the best hangover foods for a specific reason: they’re rich in an amino acid called L-cysteine, which helps your body break down acetaldehyde. A clinical trial found that supplemental L-cysteine at 1,200 mg reduced hangover severity, nausea, and headache compared to placebo. You won’t get a full supplement dose from breakfast, but eggs, yogurt, oats, and chicken all contribute meaningful amounts. Toast or crackers help if your stomach can’t handle much else. Bananas add potassium. A simple breakfast of eggs, toast, and a banana covers a surprising number of bases.
B vitamins are worth restoring too. A standard B-complex vitamin won’t reverse a hangover on its own, but since alcohol actively depletes your B6 stores, replenishing them supports the energy production and brain function that feel so sluggish the morning after.
Pain Relief: Choose Carefully
Ibuprofen or aspirin can help with headache and body aches. Take them with food to avoid further irritating your stomach lining, which alcohol has already inflamed.
Avoid acetaminophen (Tylenol). Your liver uses the same enzyme pathway to process both alcohol and acetaminophen. After heavy drinking, that pathway is already revved up, and it converts acetaminophen into a toxic byproduct that can damage liver cells. This risk is particularly elevated in regular drinkers, but even occasional drinkers should skip it on hangover mornings. The increased risk of liver toxicity persists even after alcohol has cleared your system.
What Actually Helps vs. What Doesn’t
“Hair of the dog,” or drinking more alcohol the next morning, delays your hangover rather than treating it. You’re simply restarting the cycle. Your body still has to process the new alcohol eventually, and you end up extending the timeline of misery.
Coffee is a mixed bag. Caffeine can relieve headache and improve alertness, but it’s also a mild diuretic that can worsen dehydration. If you’re a regular coffee drinker, a small cup with plenty of water alongside it is reasonable. If you’re not, skip it.
One supplement with some clinical backing is prickly pear extract (from the Opuntia ficus-indica cactus). In a randomized trial with 64 volunteers, taking it five hours before drinking cut the risk of a severe hangover roughly in half and reduced nausea, dry mouth, and loss of appetite. It also lowered a key marker of inflammation by about 40% compared to placebo. The catch: you have to take it before you drink, so it’s a prevention tool, not a morning-after fix.
Why Dark Liquors Make It Worse
Not all alcohol produces equal hangovers. Dark spirits like bourbon, whiskey, and red wine contain higher levels of congeners, which are chemical byproducts of fermentation that give these drinks their color and flavor. Clear spirits like vodka and gin have almost none.
Research comparing bourbon to vodka at the same alcohol dose found that bourbon consistently produced more severe hangover ratings. That said, the amount of alcohol you drink matters far more than the type. Congeners make a bad situation worse, but they’re not the primary driver. Six vodka sodas will still leave you miserable.
A Practical Hangover Timeline
Symptoms typically peak right as your blood alcohol concentration returns to zero, which for most people is sometime in the early-to-mid morning after a night of drinking. From that peak, expect 12 to 24 hours before you feel fully normal, though milder hangovers may clear in 6 to 8 hours with good self-care.
Here’s a reasonable recovery plan in order of priority:
- Immediately: Drink an electrolyte solution or salted water. Take ibuprofen with a few crackers if your headache is bad.
- Within the first hour: Eat a real meal, ideally something with eggs, carbs, and potassium-rich fruit.
- Throughout the day: Keep sipping fluids. A B-complex vitamin can help restore what alcohol depleted overnight.
- If you can manage it: Light movement like a walk helps circulation and can improve your mood, but don’t push into intense exercise while dehydrated.
Sleep is also genuinely restorative. Alcohol fragments your sleep cycles, cutting into the deep and REM stages your brain needs to recover. If you can nap, even 20 to 30 minutes helps your body catch up on the repair work it missed overnight.