Standard Adult Dosage for Ibuprofen Tablets

The standard dose of ibuprofen (the active ingredient in Advil) for adults is one tablet every 4 to 6 hours, with a maximum of 3 to 4 tablets in a 24-hour period. Most over-the-counter Advil tablets contain 200 mg of ibuprofen. If your pain or fever is not relieved after the first dose, you can take another tablet after 4 hours, but do not exceed the daily limit without talking to a doctor or pharmacist.

The exact number of tablets you should take depends on the strength of the tablet you have. Check the label on your bottle — it will tell you the milligrams per tablet and the recommended dose. If you have prescription-strength ibuprofen (which is usually 600 mg or 800 mg per tablet), the dosing is different and your doctor or pharmacist will have given you specific instructions.

Taking more than the recommended dose will not make the medication work faster or better, and it increases your risk of side effects like stomach upset, ulcers, and kidney problems. If over-the-counter doses are not controlling your pain, that is a sign to see a doctor rather than to increase the dose on your own.

Key Takeaways

  • Adults should take one 200 mg tablet of Advil every 4 to 6 hours, with a maximum of 3 to 4 tablets in 24 hours.
  • Always check your bottle label for the exact strength and recommended dose, because different products vary.
  • Do not take ibuprofen on an empty stomach if you have a history of stomach problems — food or milk can reduce irritation.
  • Children's dosing is based on weight, not age, and you should use a children's formulation and follow the label or ask a pharmacist.
  • Stop taking ibuprofen and call a doctor if you have signs of an allergic reaction, severe stomach pain, or black or bloody stools.

Taking Ibuprofen Safely With Food and Other Medications

Ibuprofen works best when taken with food or milk if you have a sensitive stomach, because it can irritate the stomach lining. You do not need to wait for food to take it, but eating something beforehand or at the same time reduces the chance of heartburn or nausea. If you have a history of ulcers or stomach problems, always take it with food and talk to your doctor before using it regularly.

Ibuprofen can interact with other medications, including blood thinners, certain blood pressure drugs, and some heart medications. If you take any prescription medications, ask your pharmacist or doctor whether it is safe to use ibuprofen before you start taking it. Do not combine ibuprofen with other pain relievers like acetaminophen (Tylenol) or naproxen (Aleve) unless a doctor tells you to.

Who Should Not Take Ibuprofen or Should Use It With Caution

Ibuprofen is not recommended for people with a history of ulcers, severe kidney disease, heart disease, or high blood pressure without a doctor's approval. Pregnant women, especially in the third trimester, should not take ibuprofen without talking to their doctor first. If you are over 65, have liver or kidney problems, or take blood thinners, talk to a pharmacist before using ibuprofen regularly.

People with asthma or aspirin sensitivity may have a reaction to ibuprofen. If you have ever had an allergic reaction to aspirin or other pain relievers, do not take ibuprofen without checking with a doctor first. Signs of an allergic reaction include rash, difficulty breathing, or swelling of the face or throat — if you experience any of these, stop taking the medication and seek medical attention right away.

Dosing for Children and Teenagers

Children's ibuprofen dosing is based on weight, not age, and you should always use a children's formulation rather than adult tablets. Children's Advil and similar products come in lower strengths (usually 100 mg per 5 mL of liquid or per chewable tablet) specifically designed for smaller bodies. The label on the bottle will show the correct dose for your child's weight — follow it exactly, or ask a pharmacist if you are unsure.

Do not give ibuprofen to a child under 6 months old without a doctor's approval. For children 6 months and older, the dose is typically 5 to 10 mg per kilogram of body weight every 6 to 8 hours, with a maximum daily dose that depends on the child's weight. If your child weighs less than 50 pounds or you are not sure of the correct dose, ask a pharmacist — they can calculate it for you based on your child's weight.

When to Stop Taking Ibuprofen and See a Doctor

Stop taking ibuprofen and contact a doctor if you have severe stomach pain, black or bloody stools, vomit that looks like coffee grounds, or signs of an allergic reaction like rash or difficulty breathing. If you have been taking ibuprofen regularly for more than 10 days and your pain has not improved, or if your fever lasts more than 3 days, see a doctor — these can be signs that you need a different treatment or that something else is going on.

If you take ibuprofen and develop dizziness, unusual bruising, swelling in your legs, or shortness of breath, stop taking it and call a doctor. These can be signs of a serious side effect. Do not wait for the symptoms to go away on their own — call your doctor or poison control if you think you have taken too much ibuprofen.

Frequently Asked Questions

Can I take ibuprofen every day?

Over-the-counter ibuprofen is meant for short-term use only — typically no more than 10 days for pain or 3 days for fever without a doctor's approval. Taking it every day for weeks or months increases your risk of stomach ulcers, kidney damage, and heart problems. If you need pain relief every day, talk to a doctor about what is causing the pain and what safer options might work for you.

Is it okay to take ibuprofen on an empty stomach?

Ibuprofen can irritate your stomach lining, especially if you take it without food. If you have a sensitive stomach or a history of ulcers, always take it with food or milk. Even if you do not usually have stomach problems, eating something beforehand can reduce the chance of heartburn or nausea.

What should I do if I accidentally took too much ibuprofen?

If you took more than the recommended dose, call Poison Control at 1-800-222-1222 (in the United States) or your local emergency number. Have the bottle in front of you so you can tell them the strength and how many tablets you took. Do not wait for symptoms to appear — it is better to call and be told you are fine than to wait and have a serious problem develop.

Can I take ibuprofen with alcohol?

No. Combining ibuprofen with alcohol increases your risk of stomach bleeding and liver damage. If you drink alcohol regularly or have had more than one or two drinks, wait at least several hours before taking ibuprofen, or choose a different pain reliever and talk to a doctor about what is safe for you.

How long does it take for ibuprofen to work?

Ibuprofen usually starts to work within 30 minutes to an hour, though it may take up to 2 hours to feel the full effect. Taking it with food may slow absorption slightly. If you do not feel relief after 2 hours, do not take another dose right away — wait the full 4 to 6 hours before your next dose.