For over-the-counter use, adults can take 1 to 2 Advil (200mg) tablets at a time, with a maximum of 6 tablets (1,200mg) in 24 hours. Each dose should be spaced at least 4 to 6 hours apart, and you should use the lowest effective dose for the shortest time needed.
Single Dose and Daily Limits
Each Advil tablet contains 200mg of ibuprofen. The standard adult dose is 200mg to 400mg at a time, meaning 1 or 2 tablets per dose. For most types of pain, including headaches, muscle aches, and menstrual cramps, 400mg (2 tablets) every 4 to 6 hours works well. You should not exceed 6 tablets (1,200mg total) within a 24-hour period when using OTC ibuprofen without a doctor’s guidance.
Prescription-strength ibuprofen can go higher, but those doses carry more risk of side effects and require medical supervision. If 2 tablets aren’t relieving your pain, that’s a reason to talk to a doctor rather than take more on your own.
Timing Between Doses
Wait at least 4 hours between doses, though 6 hours is better if your pain is manageable. A common mistake is re-dosing too early because the pain hasn’t fully subsided. Ibuprofen typically takes 20 to 30 minutes to start working, and its effects last 4 to 6 hours. If you’re watching the clock waiting to take your next dose, that’s another signal the underlying problem may need a different approach.
How Long You Can Keep Taking It
OTC ibuprofen is meant for short-term use. If you’re still reaching for it after 10 days for pain (or 3 days for fever), stop and check in with a doctor. Longer use raises the risk of stomach irritation, ulcers, and kidney strain, even at standard doses.
Take each dose with food or a glass of water to reduce the chance of stomach upset. Swallow tablets whole rather than chewing or crushing them.
How Ibuprofen Works
Ibuprofen blocks your body’s production of prostaglandins, chemicals that trigger inflammation, pain, and fever. It does this by shutting down two enzymes involved in prostaglandin production. This is why it works well for pain that involves swelling, like a twisted ankle or a sore tooth, and not just for dulling pain signals the way some other painkillers do. The same mechanism that reduces inflammation in your joints, though, also reduces the protective lining of your stomach, which is the main reason higher doses and longer use cause digestive problems.
Who Should Be Careful With Advil
Ibuprofen isn’t safe for everyone at any dose. You should avoid it or talk to a doctor first if you have kidney disease, liver disease, a history of stomach ulcers or digestive bleeding, heart failure, or high blood pressure. People with asthma, especially those who also have nasal polyps, can have serious reactions to ibuprofen.
Several common medications interact with ibuprofen in ways that increase bleeding risk or reduce effectiveness. These include blood thinners, aspirin, oral steroids, and certain antidepressants (both SSRIs and SNRIs). If you take any of these regularly, check with your pharmacist before adding Advil.
Ibuprofen also carries a slightly elevated risk of heart attack and stroke compared to not taking it, particularly with long-term use. This risk is small for occasional, short-term use in otherwise healthy people, but it’s worth knowing about if you have cardiovascular risk factors.
Advil and Alcohol
A single drink while taking a standard dose of ibuprofen is generally fine for most people. Beyond that, the risks climb. Both alcohol and ibuprofen irritate the stomach lining, so combining moderate or heavy drinking with ibuprofen significantly raises the chance of stomach ulcers, digestive bleeding, and kidney damage. If you drink regularly, ibuprofen may not be the best choice for pain relief.
Dosing for Children and Teens
Children under 6 months should not take ibuprofen. For older children, dosing is based on weight, not age, and liquid formulations with a measured syringe are the safest way to get accurate doses. Kitchen spoons are unreliable. Children can take ibuprofen every 6 to 8 hours (longer intervals than adults). If your child is old enough for 200mg tablets, use their weight to confirm the right amount rather than guessing.
Signs You’ve Taken Too Much
Ibuprofen overdose symptoms range from nausea, stomach pain, and vomiting to more serious signs like ringing in the ears, blurred vision, confusion, difficulty breathing, and very little urine output. Severe overdose can cause seizures or loss of consciousness. If you suspect someone has taken too much ibuprofen, call Poison Control at 1-800-222-1222, which is free, confidential, and available 24/7. For serious symptoms, call 911.