For adults, the standard single dose is 1 or 2 ibuprofen tablets (200 to 400 mg), taken up to 3 times a day. The maximum in 24 hours is 6 tablets, or 1,200 mg total, when using over-the-counter ibuprofen without a doctor’s guidance.
Single Dose and Daily Limits
Each over-the-counter ibuprofen tablet contains 200 mg. You can take 1 tablet (200 mg) for mild pain or 2 tablets (400 mg) for stronger relief. A 400 mg dose is the standard recommendation for moderate pain and menstrual cramps.
Wait at least 4 to 6 hours between doses. You can take up to 3 doses per day, which means a maximum of 6 tablets in any 24-hour period. Going beyond 1,200 mg per day without medical supervision increases your risk of side effects, particularly stomach and kidney problems.
Doctors sometimes prescribe ibuprofen at higher doses for conditions like arthritis, but those doses are monitored with regular check-ups. The 1,200 mg OTC ceiling exists because it’s considered safe for most adults to manage on their own for short periods.
How to Take It Safely
Swallow the tablets whole with water, ideally with or after food. Taking ibuprofen on an empty stomach increases the chance of heartburn, nausea, and stomach irritation. Even a small snack or glass of milk helps.
Stick to the lowest dose that controls your symptoms. If one tablet handles your headache, there’s no benefit to taking two. And if you find yourself reaching for ibuprofen daily for more than a few days, that’s a sign the underlying issue needs attention rather than repeated doses.
Dosing for Children and Teens
Children 12 and older follow the same dosing as adults: 1 to 2 tablets every 4 to 6 hours, no more than 6 tablets in 24 hours. For children under 12, dosing is based on body weight, typically 10 mg per kilogram of body weight given every 6 to 8 hours, with no more than 4 doses in a day. Ibuprofen is not recommended for infants under 6 months old.
Who Should Take Less or Avoid It
Some people need to reduce the dose or skip ibuprofen entirely. If you have a history of stomach ulcers, kidney disease, or heart problems, ibuprofen can worsen those conditions even at standard doses. People over 65 are more vulnerable to stomach bleeding and kidney strain from ibuprofen and generally do better with lower doses or shorter courses.
Ibuprofen also interacts with blood thinners, blood pressure medications, and other anti-inflammatory drugs. If you’re already taking aspirin for heart protection, ibuprofen can interfere with aspirin’s effect when taken around the same time. Taking multiple over-the-counter pain relievers together is a common and risky mistake, since several cold and flu products already contain ibuprofen or similar drugs.
Signs You’ve Taken Too Much
An ibuprofen overdose can range from mild stomach upset to serious complications. Early warning signs include nausea, vomiting, stomach pain, and severe heartburn. More concerning symptoms include ringing in the ears, blurred vision, confusion, difficulty breathing, and little to no urine output. In severe cases, overdose can cause seizures, dangerously low blood pressure, or loss of consciousness.
If you accidentally take more than the recommended amount and feel fine, monitor yourself closely for stomach pain or any of the symptoms above. If you or someone else has taken a large amount, contact Poison Control (1-800-222-1222 in the U.S.) or seek emergency care, even if no symptoms have appeared yet. Kidney damage from ibuprofen overdose can develop without obvious early warning signs.