The standard limit for over-the-counter Advil (ibuprofen) is 1,200 mg per day, which works out to 6 regular-strength tablets in 24 hours. Each standard Advil tablet contains 200 mg of ibuprofen, and you can take 1 or 2 tablets at a time, up to 3 times a day, with at least 4 hours between doses.
Dosing by Tablet Strength
Regular Advil comes in 200 mg tablets. The recommended dose for general pain relief is 200 to 400 mg every 4 to 6 hours as needed. In practical terms, that means 1 or 2 tablets per dose, taken no more than 3 times a day. The hard ceiling is 6 tablets (1,200 mg) in a 24-hour period for self-treated pain.
Advil also comes in higher-strength formulations. If you’re taking 400 mg tablets, stick to 1 tablet per dose, up to 3 times a day, with the same 4-hour minimum between doses. The daily cap stays at 1,200 mg regardless of which tablet size you use.
For menstrual cramps specifically, the recommended dose is 400 mg every 4 hours as needed, which is on the higher end of the dosing range but still within the daily maximum.
Why the Limit Matters
Higher doses significantly increase the risk of stomach bleeding, heart problems, and kidney damage. Your kidneys are especially vulnerable if you’re dehydrated or already have reduced kidney function. The FDA label also warns that long-term continuous use may increase the risk of heart attack or stroke, even in people without prior heart disease.
The full list of risks from excessive ibuprofen use includes heart attack, heart failure, high blood pressure, stroke, stomach ulcers and bleeding, low sodium levels, and, more rarely, liver toxicity. These risks climb with both dose and duration, which is why OTC packaging generally recommends not using ibuprofen for more than 10 consecutive days for pain without medical guidance.
How to Take It Safely
Take Advil with water, ideally with or after food. Eating something beforehand helps protect your stomach lining, which ibuprofen can irritate. You don’t need a full meal, but taking it on a completely empty stomach increases the chance of nausea or heartburn.
Use the lowest effective dose for the shortest time you need it. If one tablet handles your headache, there’s no benefit to taking two. Space doses at least 4 hours apart, and if your pain is manageable, stretching to every 6 hours reduces total exposure over the course of a day.
Children’s Dosing Is Different
Ibuprofen should not be given to infants under 6 months old. For children 6 months and older, dosing is based on weight rather than age. Children can take ibuprofen every 6 to 8 hours as needed, which is a longer gap than the adult minimum of 4 hours. The adult dose of 400 mg applies to teenagers, but younger children need significantly less. Always use a weight-based chart rather than guessing.
Signs You’ve Taken Too Much
An ibuprofen overdose can affect multiple body systems. Early warning signs include severe stomach pain, nausea, vomiting, and heartburn. More serious symptoms include ringing in the ears, blurred vision, confusion, severe headache, difficulty breathing, and seizures. Low blood pressure and very little urine output signal that the kidneys and cardiovascular system are involved.
If you or someone else has taken significantly more than the recommended dose, contact Poison Control at 1-800-222-1222 or call 911. Even if symptoms seem mild at first, ibuprofen toxicity can worsen over several hours.
Prescription Doses Go Higher
Doctors sometimes prescribe ibuprofen at doses above the OTC limit for conditions like rheumatoid arthritis or severe inflammation. Prescription-strength ibuprofen can go up to 3,200 mg per day (typically 800 mg four times daily), but this requires medical supervision with periodic blood work to monitor kidney and liver function. That higher ceiling is not safe to self-prescribe. If 1,200 mg a day isn’t controlling your pain, that’s a signal to talk to a provider rather than take more on your own.