Most hangovers last about 12 hours from the time you wake up, though the full cycle from your last drink to feeling normal again averages around 18 hours. There’s no instant cure, but several strategies can meaningfully shorten that window and reduce how miserable you feel. Here’s what actually works, what doesn’t, and why.
Why You Feel This Bad
A hangover isn’t just dehydration, though that’s part of it. Alcohol triggers a cascade of problems: your immune system mounts an inflammatory response, your blood sugar drops, your sleep quality tanks even if you were unconscious for eight hours, and your body is still processing toxic byproducts of alcohol breakdown. The worst symptoms tend to peak about 14 hours after you started drinking, which for most people lands squarely in the morning.
Alcohol also acts as a diuretic, making your kidneys flush out extra water. Interestingly, this initial flush mostly pulls free water rather than electrolytes. But if you’ve been vomiting or had diarrhea, you lose potassium, magnesium, and sodium on top of the fluid loss, which compounds the fatigue, headaches, and muscle weakness.
Fluids and Electrolytes First
Start drinking water or an electrolyte beverage as soon as you wake up. Plain water helps, but if your hangover involved vomiting or diarrhea, you need to replace minerals too. A sports drink, coconut water, or even broth will cover the basics: sodium, potassium, and a small amount of sugar to help absorption. Sip steadily rather than chugging a liter at once, which can upset an already irritated stomach.
Eat Something, Even If You Don’t Want To
Alcohol suppresses your body’s ability to maintain blood sugar overnight. By morning, your glucose levels can be noticeably low, contributing to shakiness, fatigue, brain fog, and irritability. Research on evening alcohol consumption shows that next-morning blood sugar drops significantly, partly because alcohol reduces growth hormone release during the night, a hormone that normally helps keep glucose stable while you sleep.
You don’t need a greasy diner breakfast specifically, but you do need carbohydrates and protein. Toast with eggs, oatmeal with banana, or rice with some kind of protein all work. The carbohydrates bring your blood sugar back up, and protein provides your body with amino acids it can use to support recovery. Foods high in the amino acid cysteine, including eggs, yogurt, chicken, and legumes, help your body produce a compound that neutralizes the toxic byproducts of alcohol metabolism. Bland, simple foods are fine if your stomach is sensitive.
Pain Relief: Choose Carefully
If your headache is unbearable, ibuprofen or naproxen are safer choices than acetaminophen (Tylenol) after drinking. Acetaminophen and alcohol are both processed by the liver, and combining them increases the risk of liver damage. Cleveland Clinic notes that people who regularly drink heavily should keep acetaminophen doses under 2,000 mg per day, half the normal maximum. Even occasional drinkers are better off reaching for an anti-inflammatory painkiller instead.
That said, ibuprofen and similar drugs are harder on the stomach and kidneys. If your hangover already has you nauseated, take ibuprofen with food to reduce the chance of stomach irritation. Don’t take it on an empty stomach.
What Your Drink Choice Had to Do With It
Not all alcohol punishes you equally. Darker spirits like brandy and whiskey contain far higher levels of congeners, chemical byproducts of fermentation that your body has to process alongside the alcohol itself. Brandy can contain several thousand milligrams per liter of methanol alone, while vodka contains almost none. Whiskey carries high levels of several other congeners as well. Red wine and dark rum fall somewhere in the middle.
This doesn’t mean clear spirits are hangover-proof. Drink enough of anything and you’ll feel terrible. But if you consistently notice worse hangovers from bourbon or red wine than from vodka or white wine, congeners are a likely reason. For your next outing, lighter-colored drinks will generally produce milder aftereffects at the same amount of alcohol.
Skip the “Hair of the Dog”
Drinking more alcohol the next morning is one of the most persistent hangover myths. It does temporarily mask symptoms by putting alcohol back into your system, but it doesn’t resolve anything. As Laura Veach, a researcher at Wake Forest Baptist Medical Center, puts it: the hangover isn’t cured, just postponed. Your body still has to process all of that alcohol eventually, and adding more just extends the timeline and increases the total burden on your liver.
Hangover Supplements Lack Evidence
The supplement industry sells dozens of hangover pills and powders containing ingredients like DHM (from the Japanese raisin tree), NAC, B vitamins, and various herbal extracts. A review of 82 commercially available hangover products found no peer-reviewed human data supporting the safety or efficacy of any of them. Many products don’t even disclose the doses of their active ingredients, and some contain B vitamins at levels that exceed safe upper limits.
This doesn’t mean every ingredient in these products is useless, just that nobody has proven they work in the real-world doses being sold. Save your money and stick with water, food, and time.
Sleep, Rest, and Time
Alcohol wrecks sleep quality. Even if you slept a full eight hours, you likely spent less time in the deep, restorative stages your body needs. One of the most effective things you can do is go back to sleep or at least rest quietly. Your body clears the remaining byproducts of alcohol breakdown on its own timeline, and there’s no way to meaningfully speed that up.
For most people, hangover symptoms resolve within 14 to 23 hours of the last drink. From the time you wake up, expect roughly 12 hours before you feel fully normal. Light activity like a short walk can help with circulation and mood, but intense exercise while dehydrated and low on fuel will make things worse.
A Practical Recovery Checklist
- Immediately on waking: Drink 16 to 24 ounces of water or an electrolyte drink. Sip, don’t chug.
- Within the first hour: Eat a meal with carbohydrates and protein. Eggs, toast, bananas, and oatmeal are all good options.
- For headache: Ibuprofen with food. Avoid acetaminophen.
- For nausea: Ginger tea or small bites of bland food like crackers or rice. Let your stomach settle before eating a full meal.
- Throughout the day: Keep drinking fluids. Rest or nap if possible. Avoid intense exercise and skip the “hair of the dog.”
There’s no magic cure for a hangover. Your liver processes alcohol at a fixed rate, and the inflammatory response and blood sugar disruption take time to resolve. But replacing fluids, eating well, managing pain safely, and resting will get you through the worst of it faster and with less suffering than white-knuckling it on an empty stomach.