The standard adult dose of Advil (ibuprofen) is 200 to 400 mg at a time, with a maximum of 1,200 mg in 24 hours when using it over the counter. Each regular-strength Advil tablet contains 200 mg, so that means 1 to 2 tablets per dose and no more than 6 tablets in a day.
Standard Adult Dosing
For general pain relief, the recommended dose is 200 to 400 mg every 4 to 6 hours as needed. In practical terms, that’s 1 or 2 regular Advil tablets at a time. Most people start with one tablet and move to two if one isn’t enough. For menstrual cramps specifically, the recommended dose is 400 mg (2 tablets) every 4 hours as needed, because that type of pain tends to respond better to a slightly more aggressive approach.
The key rule: wait at least 4 to 6 hours between doses, and don’t exceed 3 doses of 400 mg (6 tablets total) in a 24-hour period. Taking it with food or a glass of water helps reduce stomach irritation.
How Long You Can Keep Taking It
Over-the-counter Advil is meant for short-term use. The Cleveland Clinic recommends no more than 10 consecutive days for pain, or 3 consecutive days if you’re using it for fever. If you still need it after that window, something else is going on that deserves a closer look from a healthcare provider.
People sometimes fall into the habit of taking ibuprofen daily for weeks or months for chronic aches. This significantly raises the risk of stomach ulcers, kidney strain, and cardiovascular problems. The drug works by blocking inflammation, but that same mechanism also reduces the protective lining in your stomach and affects blood flow to your kidneys over time.
Prescription Doses Are Higher
Under a doctor’s supervision, ibuprofen doses can go well above the OTC ceiling. Prescription-strength ibuprofen can reach 800 mg per dose and up to 3,200 mg per day for conditions like rheumatoid arthritis. But those higher doses come with regular monitoring of kidney function and blood pressure. The 1,200 mg daily OTC limit exists specifically because you’re managing the dose yourself without that monitoring.
Who Should Take Less (or None)
Several conditions change the math on what’s safe. If you have existing kidney problems, ibuprofen can push already-stressed kidneys further toward damage, even at standard doses. People with liver disease should generally avoid it entirely. The Mayo Clinic notes that ibuprofen can damage the liver, particularly with frequent use or when combined with alcohol, and that people with liver disease or a liver transplant should usually steer clear.
You should also be cautious or avoid Advil if you have a history of stomach ulcers or GI bleeding, heart disease or high blood pressure, or if you’re in the third trimester of pregnancy. Adults over 65 are more vulnerable to stomach and kidney side effects and may need lower doses.
Advil and Alcohol
Combining ibuprofen with alcohol raises the risk of upper gastrointestinal bleeding. Research published by the American Academy of Family Physicians found that regular ibuprofen use in people who drink alcohol significantly increases the risk of major upper GI bleeding compared to either one alone. Occasional ibuprofen use with alcohol didn’t show the same elevated risk, so a single dose with a glass of wine at dinner is a different situation than taking Advil daily while drinking regularly. Still, the combination is worth being aware of, especially if you tend to reach for ibuprofen the morning after drinking, when your stomach lining is already irritated.
Signs You’ve Taken Too Much
Ibuprofen overdoses below 100 mg per kilogram of body weight generally cause minimal symptoms. For a 150-pound adult, that’s roughly 6,800 mg, or about 34 tablets. Mild overdoses typically show up as nausea, vomiting, stomach pain, and headache, usually within 4 hours of ingestion. At higher levels, drowsiness, dizziness, and ringing in the ears can develop.
Life-threatening toxicity generally doesn’t occur until doses reach around 400 mg per kilogram, which is far beyond what most accidental overdoses involve. At that level, seizures, dangerously low blood pressure, and organ damage become risks. The fact that serious toxicity requires such high amounts doesn’t mean casual overuse is harmless. Taking even moderately elevated doses regularly can quietly damage your stomach lining and kidneys without dramatic warning signs.
Dosing for Children
Children’s ibuprofen dosing is based on weight, not age (though age can be used as a backup if you don’t know the weight). Ibuprofen should not be given to babies under 6 months old. For older children, doses are given every 6 to 8 hours as needed, with longer intervals than adults. Children’s formulations come in liquid concentrations and chewable tablets designed for smaller doses. The adult dose of 400 mg applies once a child is large enough, typically around 72 pounds or more. Always use the measuring device that comes with liquid formulations rather than a kitchen spoon.