The most effective hangover relief comes from a combination of fluids, the right pain reliever, food, and time. There’s no single cure, but several options can meaningfully reduce symptoms like headache, nausea, and fatigue. Here’s what actually works, what doesn’t, and what to avoid.
Start With Fluids, Not Just Water
Alcohol is a diuretic, meaning it forces your kidneys to flush out more fluid than you’re taking in, carrying minerals like sodium and potassium along with it. That fluid and mineral loss is a major driver of hangover headaches, dizziness, and fatigue. Drinking water helps, but adding some salt and sugar speeds up absorption.
A simple homemade electrolyte drink from Harvard’s nutrition department calls for 3½ cups of water, half a teaspoon of salt, 2 to 3 tablespoons of honey or sugar, and about 4 ounces of orange juice or coconut water. This gives your body what it needs to actually retain the fluid instead of just passing it through. Sports drinks work too, though they tend to contain more sugar than necessary. Coconut water and broth are other solid options.
You don’t need to chug. Sipping steadily over the first few hours after waking is more effective and easier on a queasy stomach.
Choosing the Right Pain Reliever
A standard over-the-counter pain reliever can take the edge off a hangover headache, but your choice matters. Ibuprofen (Advil, Motrin) and aspirin both work well for headache relief, though they can irritate your stomach lining, which alcohol has already inflamed. If your hangover leans more toward nausea and stomach pain than headache, these may make things worse.
Acetaminophen (Tylenol) is the one to avoid. Alcohol and acetaminophen are both processed by the same liver enzyme. Drinking ramps up production of that enzyme, which converts acetaminophen into a toxic byproduct at a higher rate than normal. This combination can cause serious liver damage, even at doses that would otherwise be safe. If you’ve been drinking heavily, skip the Tylenol entirely.
Eat Something With Carbs and Protein
When your liver is busy breaking down alcohol, it can’t do its other job of releasing stored glucose into your bloodstream. That’s why hangovers often come with shakiness, weakness, and brain fog, all classic signs of low blood sugar. Drinking on an empty stomach makes this worse, but even people who ate before drinking can wake up with depleted glucose stores.
Toast, crackers, oatmeal, eggs, or bananas are all good morning-after choices. The carbohydrates help restore blood sugar, while bland foods are gentle on an irritated stomach. Bananas also provide potassium, which helps replace what alcohol flushed out. If you can tolerate it, a meal with both carbs and protein (like eggs on toast) gives your body more sustained fuel for recovery.
Supplements That Show Some Promise
Most hangover supplements on the market haven’t held up well in clinical testing. A randomized, placebo-controlled study published in BMJ Nutrition found that a supplement containing magnesium, potassium, sodium, zinc, thiamine, riboflavin, and folic acid produced no statistically significant improvement in hangover symptoms compared to a placebo. The researchers concluded that the mineral and electrolyte disruption caused by alcohol may be smaller than commonly believed, at least in the context of a single drinking session.
Two compounds have shown more interesting results:
Dihydromyricetin (DHM), extracted from the Japanese raisin tree, appears to speed up alcohol metabolism. Research from USC found that DHM triggers the liver to produce more of the enzymes responsible for breaking down ethanol and its toxic byproduct, acetaldehyde. It also boosts the efficiency of those enzymes, helping the body clear alcohol faster. DHM supplements are widely available, though most of the research so far has been done in animal models or lab settings.
L-cysteine, an amino acid, showed more direct evidence in humans. A double-blind study from the University of Helsinki gave participants either a placebo, 600 mg, or 1,200 mg of L-cysteine alongside alcohol. The amino acid significantly reduced headache, nausea, stress, and anxiety. L-cysteine works by binding directly to acetaldehyde, the toxic compound your liver produces as it breaks down alcohol. Acetaldehyde is responsible for a significant share of hangover misery, and L-cysteine essentially helps neutralize it.
N-acetyl cysteine (NAC), a supplement form of cysteine that’s popular in hangover prevention kits, didn’t fare as well. A randomized, double-blind study giving participants 1.2 grams of NAC before drinking and another 1.2 grams after found no effect on hangover symptoms. No safety concerns were noted, but it simply didn’t help.
Prickly Pear: Take It Before, Not After
One botanical remedy with clinical backing is prickly pear cactus extract. In a study led by researchers at Tulane, 55 volunteers took either prickly pear extract or a placebo five hours before drinking. Those who received the extract had lower levels of C-reactive protein, an inflammatory marker produced by the liver, and reported milder hangover symptoms. The researchers attributed this to the extract dampening the body’s inflammatory response to alcohol.
The catch is the timing. Prickly pear worked as a preventive measure taken hours before drinking, not as a morning-after remedy. If you’re reading this while already hungover, this one’s for next time.
What Won’t Help
“Hair of the dog,” or drinking more alcohol the next morning, delays your hangover rather than curing it. It temporarily suppresses withdrawal-like symptoms, but your liver still has to process the additional alcohol eventually, often making the eventual crash worse.
Coffee can help with grogginess and caffeine-withdrawal headaches, but it’s also a mild diuretic. If you drink it, match each cup with an equal amount of water. It won’t speed up alcohol metabolism.
Vitamin B supplements, despite being a staple of hangover advice, haven’t demonstrated measurable benefits in controlled studies. The clinical evidence consistently shows no significant symptom improvement from B-vitamin supplementation after drinking.
A Practical Morning-After Plan
If you’re looking for a simple protocol: start with a large glass of water or an electrolyte drink as soon as you wake up. Eat something starchy and easy on the stomach within the first hour. If your headache is severe, take ibuprofen with food (never acetaminophen). Continue sipping fluids throughout the morning. Rest when you can, because your body is doing real metabolic work to clear the remaining alcohol byproducts, and that process simply takes time.
Most hangovers resolve within 24 hours. The severity depends largely on how much you drank, how hydrated you were during the night, whether you ate beforehand, and your individual biology. People who produce acetaldehyde faster than they can break it down (common in people of East Asian descent due to a genetic enzyme variation) tend to experience worse symptoms at lower amounts of alcohol.