There’s no instant cure for a hangover, but you can meaningfully shorten how long you feel terrible by targeting the specific things alcohol does to your body. A hangover isn’t one problem; it’s several happening at once: dehydration, low blood sugar, inflammation, and a buildup of toxic byproducts your liver is still processing. Addressing each of these individually is the fastest path back to feeling human.
Why Hangovers Happen in the First Place
When you drink, your liver breaks alcohol down into a compound called acetaldehyde, which is significantly more toxic than alcohol itself. Acetaldehyde is then converted into harmless acetate, but that second step takes time. While acetaldehyde lingers, it drives many of the worst hangover symptoms. Research published in 2025 found that acetaldehyde slows energy production in brain cells by roughly 50% and cuts oxygen use by 30%, which helps explain the brain fog, fatigue, and sluggish thinking that define a hangover morning.
Your liver processes alcohol at a fixed rate, about one standard drink per hour, and there’s no way to speed that up once you’ve already been drinking. But what you can do is support the other systems that are struggling alongside it: your hydration, your blood sugar, your inflamed stomach lining, and your depleted electrolytes.
Rehydrate With Electrolytes, Not Just Water
Alcohol suppresses the hormone that tells your kidneys to retain water, which is why you urinate so much more when drinking. By the time you wake up hungover, you’ve likely lost a significant amount of fluid and the electrolytes (sodium, potassium, magnesium) that went with it. Plain water helps, but it doesn’t replace those electrolytes. A sports drink, coconut water, or an oral rehydration solution will restore fluid balance faster than water alone.
Start drinking fluids as soon as you wake up, and keep sipping throughout the morning rather than gulping a large amount at once. Your stomach is already irritated, and flooding it with liquid can trigger nausea. Small, steady sips every 10 to 15 minutes work better.
Eat the Right Foods Early
Alcohol disrupts your body’s ability to maintain blood sugar levels, and by morning, your blood sugar may be genuinely low. This contributes to shakiness, weakness, irritability, and difficulty concentrating. The fix is eating, but what you eat matters.
Simple carbohydrates that absorb quickly are your best first move: toast, crackers, a small glass of juice, or a banana. These raise blood sugar fast. High-fiber foods like beans or lentils, and high-fat foods like greasy breakfasts, actually slow sugar absorption and won’t stabilize you as quickly. Once you’ve gotten some quick carbs in and your stomach feels more settled, a more balanced meal with protein and complex carbs will help sustain your energy for the rest of the day. Eggs are a popular choice because they contain an amino acid that supports your liver’s detoxification process.
Choose Your Pain Reliever Carefully
A headache is often the most immediate complaint, and a pain reliever can help, but your choice matters more than usual when alcohol is still clearing your system.
Ibuprofen works well for hangover headaches, but it can irritate an already inflamed stomach lining. If your hangover leans more toward nausea and stomach pain than headache, it may make things worse. Aspirin carries the same stomach risk. Take either one with food, not on an empty stomach.
Acetaminophen (Tylenol) is the one to be most cautious with. Your liver is already working hard to process alcohol, and acetaminophen is also processed by the liver. For people who drink heavily or frequently, the Cleveland Clinic recommends keeping acetaminophen under 2,000 mg per day, which is half the normal daily maximum of 4,000 mg. If you had a particularly heavy night, ibuprofen with food is generally the safer option.
What About Supplements and Natural Remedies
A few natural remedies have actual clinical data behind them, though none are miracle cures.
- Prickly pear extract: In a controlled trial published in JAMA Internal Medicine, taking prickly pear extract before drinking reduced inflammation markers by about 40% compared to placebo. Overall hangover symptoms improved modestly, though the effect was strongest for nausea, dry mouth, and loss of appetite rather than headache.
- Korean pear juice: Drinking Korean pear juice before alcohol appears to boost the activity of the enzymes your liver uses to break down alcohol. In laboratory studies, it increased the activity of the primary alcohol-processing enzyme by two to three times and the enzyme that clears acetaldehyde by about 30%. The key detail: it needs to be consumed before you start drinking, not the morning after.
Neither of these will erase a hangover, but they may take the edge off, particularly if used preventively.
Sleep, Then Move
Alcohol fragments your sleep architecture, reducing the amount of deep, restorative sleep you get even if you’re unconscious for eight hours. Poor sleep quality is a major reason hangovers feel so crushing. If your schedule allows it, going back to sleep after your first round of water and food is one of the most effective things you can do. Your body clears acetaldehyde and repairs cellular damage faster during rest.
Once you’re past the worst of it, light movement like a short walk can help. It improves circulation, which supports your liver and kidneys in clearing metabolic waste. This doesn’t mean a hard workout. Intense exercise while dehydrated and depleted can make you feel significantly worse and puts unnecessary stress on your cardiovascular system.
What Doesn’t Work
A few popular hangover “cures” are worth debunking because they waste your time or actively make things worse.
“Hair of the dog,” or drinking more alcohol, delays your hangover rather than curing it. You’re adding more acetaldehyde to a system that hasn’t finished processing the first round. Coffee can help with the headache if you’re a regular caffeine drinker (since caffeine withdrawal compounds the problem), but it’s also a diuretic that can worsen dehydration. If you drink coffee, match each cup with an equal amount of water or electrolyte fluid.
Activated charcoal, IV drip bars, and most “hangover pills” sold online have little to no clinical evidence supporting their use. By the time you’re hungover, alcohol has already been absorbed into your bloodstream, so binding agents like charcoal have nothing left to bind.
The Fastest Timeline You Can Expect
Most hangovers resolve within 24 hours, but the severity depends on how much you drank, how quickly, whether you ate beforehand, and your individual genetics (particularly how efficiently your liver produces the enzymes that clear acetaldehyde). With aggressive hydration, food, rest, and appropriate pain management, most people feel substantially better within 8 to 12 hours of waking up. You can’t eliminate the hangover entirely, but you can compress the window of misery by addressing dehydration, blood sugar, and inflammation simultaneously rather than just waiting it out.