The best medicine to take after drinking depends on which symptoms are bothering you most. A standard dose of ibuprofen can help with headaches, an antacid can calm your stomach, and electrolyte drinks restore what alcohol flushed out. But some common painkillers carry real risks when combined with alcohol, so choosing the right one matters.
For Headaches: Ibuprofen Over Acetaminophen
Ibuprofen (Advil, Motrin) is the most commonly recommended painkiller for a post-drinking headache. It reduces inflammation, which is a core driver of hangover symptoms. A standard over-the-counter dose is appropriate, but take it with food or water, since ibuprofen can irritate a stomach that’s already inflamed from alcohol. Aspirin works similarly but is slightly harsher on the stomach lining.
Acetaminophen (Tylenol) is the one to avoid. Your liver processes both alcohol and acetaminophen using the same enzyme pathway. Normally, a small amount of acetaminophen gets converted into a toxic byproduct called NAPQI, which your liver neutralizes almost instantly using its stores of a protective molecule called glutathione. The problem is that heavy or regular drinking depletes those glutathione stores and ramps up the enzyme that produces the toxic byproduct. This means more NAPQI is created while less of it gets safely cleared, and the excess binds to liver cells and damages them. A single therapeutic dose after one night of drinking is unlikely to cause liver failure, but the margin of safety shrinks considerably if you drink regularly or take more than the recommended amount. When a safer alternative exists, there’s no reason to take the risk.
For Nausea and Upset Stomach
Alcohol increases acid production and irritates your stomach lining directly, which is why nausea and heartburn are such common morning-after symptoms. A basic antacid containing calcium carbonate (Tums) neutralizes acid quickly and provides short-term relief. For more persistent stomach discomfort, an acid-reducing medication like famotidine (Pepcid) is a better choice. Among the acid-blocking drugs in its class, famotidine has a negligible effect on how your body processes remaining alcohol, making it the safest option. Other acid blockers like cimetidine and ranitidine can actually slow alcohol metabolism and keep blood alcohol levels elevated longer.
If the main issue is nausea or dizziness rather than heartburn, meclizine (Dramamine Less Drowsy, Bonine) can help. It’s an over-the-counter antihistamine originally designed for motion sickness that works by blocking the signals in your inner ear and brain that trigger nausea and vomiting. A 25 to 50 mg dose is typical. It does cause some drowsiness, which on a hungover morning you may not mind.
Rehydration Is as Important as Any Pill
Alcohol suppresses the hormone that tells your kidneys to hold onto water, so you lose fluids and electrolytes far faster than normal while drinking. Much of what feels like a hangover, including fatigue, brain fog, and headache, is partly dehydration. Plain water helps, but it doesn’t replace the sodium and potassium you’ve lost.
An electrolyte drink with a sodium-to-potassium ratio of roughly 2:1 closely matches what your body needs to restore cellular hydration. Pedialyte and WHO-standard oral rehydration salts are designed around this balance. If you’re choosing a sports drink or electrolyte powder, look for something with 200 to 500 mg of sodium per serving and no more than about 12 grams of sugar. High-sugar drinks can actually slow water absorption in your gut, which is the opposite of what you want.
B Vitamins and What Alcohol Depletes
Alcohol interferes with your body’s ability to absorb and use B vitamins, particularly B1 (thiamine), B6, B12, and folate. These vitamins are involved in energy production, nerve function, and clearing toxic byproducts of metabolism. A single night of heavy drinking won’t cause a clinical deficiency, but it does temporarily lower your levels, and a B-complex supplement the morning after can support the recovery process. If you drink regularly, B vitamin depletion becomes a more serious concern. Chronic thiamine deficiency in particular can cause lasting brain damage.
Supplements That Show Promise
Two supplements have attracted research attention for hangover relief specifically. The first is prickly pear extract, derived from the Opuntia ficus indica cactus. In a controlled study of 55 people, those who took prickly pear extract before drinking had 40% lower levels of C-reactive protein, an inflammation marker, the following morning compared to those who took a placebo. Since inflammation appears to drive hangover severity (people with higher C-reactive protein consistently reported worse symptoms), the extract’s anti-inflammatory effect translated into moderate symptom relief. The catch is that it works best when taken before drinking, not after.
The second is dihydromyricetin (DHM), a flavonoid found in the Japanese raisin tree and sold widely as a hangover supplement. In animal studies, DHM counteracted alcohol’s effects on brain receptors involved in sedation and motor impairment, and it reduced anxiety and seizure susceptibility during withdrawal. Its direct effect on clearing alcohol from the blood was relatively weak, though. DHM likely works more by protecting your brain’s signaling systems from alcohol’s disruption than by speeding up metabolism. Human clinical trials are still limited, so its real-world effectiveness remains uncertain.
N-acetylcysteine (NAC) is another supplement sometimes recommended for hangovers. It’s a precursor to glutathione, the same protective molecule your liver uses to neutralize toxic byproducts of both alcohol and acetaminophen. Animal studies show that NAC given before alcohol exposure reduced oxidative stress on the liver. It reaches peak levels in your blood within about 45 to 60 minutes and has a short half-life of around 1.3 hours, so timing matters. Low doses of 600 to 1,800 mg have a relatively safe side effect profile, though mild gastrointestinal symptoms are the most common complaint.
Timing Your Recovery
Hangover symptoms typically peak 12 to 24 hours after your blood alcohol level drops to zero, not immediately after your last drink. This means waking up feeling rough and then feeling worse by midday is completely normal. Planning your recovery around this timeline helps: take a pain reliever and start rehydrating as soon as you wake up, eat something bland to settle your stomach and give ibuprofen a buffer, and keep sipping electrolytes throughout the day rather than chugging water all at once.
If your symptoms include vomiting that won’t stop, confusion, irregular breathing, or seizures, that’s not a hangover. Those are signs of alcohol poisoning or severe withdrawal, both of which require emergency medical attention.