Ibuprofen or naproxen are the best over-the-counter options for a headache after drinking. Both are anti-inflammatory pain relievers that target the specific processes behind alcohol-related headaches, and they work within 30 to 60 minutes for most people. What you should avoid matters just as much as what you take, though, because one common pain reliever can cause serious harm when your liver is still processing alcohol.
Why Alcohol Gives You a Headache
Alcohol causes headaches through several overlapping mechanisms. It widens blood vessels in the brain, which directly triggers head pain. It also affects histamine, serotonin, and prostaglandins, all chemical messengers involved in headache pathways. On top of that, your liver breaks alcohol down into a toxic intermediate called acetaldehyde before converting it into a harmless substance. Acetaldehyde is reactive and damaging, and even after your blood alcohol level returns to zero, its effects can linger into the next morning.
Dehydration plays a role too. Alcohol suppresses a hormone that helps your kidneys retain water, so you lose fluid faster than normal. That fluid loss concentrates your blood, reduces the cushioning around your brain, and contributes to that throbbing, pressure-like pain. Inflammation is the final piece: your body mounts an immune response to the byproducts of alcohol metabolism, raising levels of the same inflammatory markers seen in illness and injury.
Best OTC Pain Relievers for a Hangover Headache
Ibuprofen (Advil, Motrin) and naproxen (Aleve) are anti-inflammatory drugs that work well here because they block prostaglandins, one of the key drivers of alcohol-related headaches. A standard dose of either one is appropriate. Naproxen lasts longer per dose, which can be useful if your headache tends to drag on for hours.
Aspirin also reduces inflammation and can help, but like ibuprofen, it irritates the stomach lining. Since alcohol has already irritated your stomach, taking any of these on an empty stomach can make nausea worse. Eating something first, even just toast or crackers, helps protect your gut and improves absorption.
Why You Should Skip Acetaminophen
Acetaminophen (Tylenol) is the one pain reliever to avoid after drinking. Your liver uses the same detoxification pathway to process both alcohol and acetaminophen. Normally, your liver neutralizes acetaminophen’s toxic byproduct using a protective molecule called glutathione. But alcohol depletes those glutathione stores, which means more of that toxic byproduct builds up and damages liver cells.
For occasional, light drinkers, a single normal dose the morning after is unlikely to cause harm. But if you drank heavily, or if you drink regularly, the risk increases significantly. Acetaminophen toxicity accounts for nearly half of acute liver failure cases in North America and roughly a fifth of liver transplants in the U.S. If you’re a regular or heavy drinker, keeping daily acetaminophen below 2,000 mg is the safer threshold. For a hangover, though, an anti-inflammatory like ibuprofen is simply the better choice.
Caffeine: Helpful but Limited
A cup of coffee or tea can take the edge off a hangover headache. Caffeine narrows blood vessels in the brain, counteracting the dilation that alcohol caused. Studies show it reduces blood flow to the brain by about 20 to 33%, depending on your usual caffeine habits, which is part of why it helps with headaches generally.
There’s a catch, though. If you’re a regular coffee drinker and you slept past your usual morning cup, some of your headache may actually be caffeine withdrawal rather than the hangover itself. Withdrawal symptoms, including headache and fatigue, start 12 to 24 hours after your last dose. In that case, caffeine isn’t just treating the hangover; it’s resolving a second, overlapping problem. Just keep in mind that caffeine is a mild diuretic, so pair it with water rather than relying on it alone.
Water, Electrolytes, and Food
Rehydrating is essential but not instant. Drinking water steadily over the course of the morning works better than chugging a large amount at once, which can make nausea worse. Sports drinks or electrolyte solutions replace the sodium and potassium lost from alcohol’s diuretic effect, and they help your body retain fluid more efficiently than plain water.
Eating a meal matters more than most people realize. Food raises your blood sugar, which drops during heavy drinking, and gives your body the raw materials it needs to finish clearing alcohol’s byproducts. Bland, carbohydrate-rich foods are easiest to tolerate. Eggs are a particularly good choice because they contain an amino acid your liver uses to produce glutathione, the same protective molecule that alcohol depletes.
Supplements and Natural Remedies
The supplement market for hangovers is enormous, but the evidence behind most products is thin. A controlled trial of prickly pear cactus extract found that 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. Its benefit appeared to come from lowering inflammation: participants who took it had lower levels of C-reactive protein, a standard marker of inflammation, the following morning. However, this means taking it before you drink, not after.
Vitamin B6 has modest evidence from one older clinical trial suggesting it can reduce hangover severity, but no other vitamin has shown reliable effects in controlled human studies. Despite the popularity of B-complex vitamins, vitamin C, and magnesium in hangover products, none have been proven effective. No product currently on the U.S. hangover market has demonstrated efficacy in rigorous trials.
Why Some Drinks Cause Worse Headaches
The type of alcohol you drank the night before affects how bad your headache is the next day. Darker liquors like bourbon, whiskey, and brandy contain compounds called congeners, which are toxic byproducts of fermentation. Bourbon contains roughly 37 times more congeners than vodka. In a controlled study comparing the two, participants who drank bourbon reported significantly worse hangovers than those who drank the same amount of alcohol as vodka, even though intoxication levels were matched.
Red wine is a separate case. It raises blood levels of histamine and serotonin more than white wine or vodka, both of which trigger headaches in susceptible people. Recent research has identified a more specific culprit: quercetin, a natural compound found at much higher levels in red wine than other alcoholic drinks. When your liver processes quercetin, it produces a metabolite that blocks the enzyme responsible for clearing acetaldehyde. The result is a buildup of that toxic intermediate, even from relatively modest amounts of wine. This may explain why some people get headaches from just a glass or two of red wine while tolerating other drinks fine.
A Practical Morning-After Plan
When you wake up with a pounding head, this sequence covers the basics. Start with a glass of water or an electrolyte drink. Take a standard dose of ibuprofen or naproxen with a small amount of food to protect your stomach. Have your usual coffee or tea if you’re a regular caffeine drinker. Then eat a real meal when you’re able to. Most hangover headaches peak in the morning and resolve within 24 hours as your body finishes metabolizing alcohol’s byproducts.
If your headache persists well beyond 24 hours, comes with a high fever, confusion, or repeated vomiting, those symptoms point to something beyond a typical hangover and warrant medical attention.