The standard adult dose of Advil for a headache is 200 mg (one tablet), with the option to take 400 mg (two tablets) if one doesn’t provide relief. Each over-the-counter Advil tablet contains 200 mg of ibuprofen, and you can repeat a dose every four to six hours as needed, up to a maximum of 1,200 mg (six tablets) in 24 hours.
Standard Adult Dosage
For most adults and anyone 12 or older, the starting dose is one 200 mg tablet. If that doesn’t ease your headache, you can take two tablets (400 mg) for your next dose. The label says to wait four to six hours between doses and not to exceed six tablets in a 24-hour period without a doctor’s guidance.
That 400 mg dose is worth knowing about, because clinical trials consistently show it outperforms a single 200 mg tablet for headaches. In one study of 65 people with tension headaches, 200 mg of ibuprofen beat both aspirin and placebo, but research published through the International Headache Society suggests that 400 mg is the more effective starting point for most episodic tension headaches. In a trial of over 150 patients, 400 mg of ibuprofen provided faster and better pain relief than 1,000 mg of acetaminophen (Tylenol). If your headache is moderate to severe, two tablets is a reasonable first dose.
How Quickly It Works
Expect pain relief to begin within 30 to 60 minutes of taking a dose. Solubilized (liquid gel) formulations tend to kick in slightly faster, with some studies showing meaningful relief around 39 minutes compared to about 47 minutes for standard tablets. The effects typically last four to six hours before wearing off, which lines up with the recommended dosing interval.
One tip that can make a real difference: pairing ibuprofen with caffeine. A large randomized trial of 301 patients found that 400 mg of ibuprofen combined with 200 mg of caffeine (roughly one strong cup of coffee) provided significantly better headache relief than either ibuprofen or caffeine alone.
Taking It on a Full or Empty Stomach
Ibuprofen can irritate the lining of your stomach, especially if you take it without food. Eating something before your dose, even a small snack, reduces the chance of nausea or stomach discomfort. If you’re prone to an upset stomach or you’ll be taking multiple doses throughout the day, food becomes more important with each one.
Dosing for Children
Children’s Advil uses a different formulation and is dosed by weight, not by age alone. Ibuprofen should not be given to babies younger than six months. For children six months and older, liquid ibuprofen comes with a measuring syringe, and doses can be repeated every six to eight hours. The weight-based dosing chart on the package is essential here, since a child’s weight matters far more than their age for getting the right amount.
How Often Is Too Often
Taking Advil for the occasional headache is straightforward. The concern starts when headaches become frequent and you’re reaching for it regularly. If you use ibuprofen (or any simple pain reliever) on 15 or more days per month, you risk developing what’s called medication overuse headache. This is a cycle where the pain reliever itself starts triggering headaches, which leads to taking more of it, which makes the problem worse. The National Headache Foundation identifies 15 days per month as the threshold. If you’re approaching that number, the frequency of your headaches is the problem to address, not the dose of your medication.
Who Should Be Cautious
Ibuprofen isn’t safe for everyone. You should avoid it if you’ve recently had a heart attack, have heart failure, or are about to have heart surgery. People with a history of stomach ulcers, kidney disease, or liver disease need to talk to a doctor before using it. The same goes for anyone with asthma combined with nasal polyps, or lupus. Ibuprofen should not be taken at or after 20 weeks of pregnancy.
If you’re allergic to aspirin or other anti-inflammatory pain relievers like naproxen (Aleve), you should avoid ibuprofen as well, since these drugs belong to the same class and cross-reactions are common.
Ibuprofen and Alcohol
Mixing ibuprofen with alcohol raises the risk of stomach bleeding. Both substances irritate the digestive tract on their own, and together the risk is more than additive. One study found that ibuprofen use alone roughly doubled the risk of serious gastrointestinal problems, and alcohol abuse alone increased risk by about 2.4 times. But using both together pushed the risk to 6.5 times baseline, which is higher than you’d expect from simply adding the two risks together. The FDA requires an alcohol warning on all over-the-counter ibuprofen products, specifically cautioning anyone who has three or more drinks a day to get medical advice before using it.