Advil is a brand name for the drug ibuprofen, which is a nonsteroidal anti-inflammatory drug (NSAID) used to relieve pain, fever, and inflammation. According to the Advil website [2], Advil can be taken every 4 to 6 hours as needed, but it is important to not exceed 6 tablets in 24 hours unless directed by a doctor. It is also recommended to take the lowest effective dose for the shortest duration necessary to relieve symptoms.

The duration of Advil use can vary depending on the condition being treated and individual factors such as age, weight, and medical history. In general, Advil should not be taken for more than 10 days unless directed by a doctor [3]. Long-term use of NSAIDs can increase the risk of side effects such as stomach bleeding, kidney damage, and heart attack.

It is important to follow the instructions on the label and to talk to a doctor or pharmacist before taking Advil if you have any medical conditions or are taking other medications. Pregnant women should also consult with their healthcare provider before taking Advil, as it may harm the fetus [2].

In conclusion, Advil can be taken every 4 to 6 hours as needed, but the lowest effective dose for the shortest duration necessary to relieve symptoms should be used. Advil should not be taken for more than 10 days unless directed by a doctor. It is important to follow the instructions on the label and to talk to a doctor or pharmacist before taking Advil if you have any medical conditions or are taking other medications.

Sources:
[2] https://www.advil.com/faqs-en/advil-pain/
[3] https://www.usatoday.com/story/news/2023/03/11/how-often-can-you-take-advil/11230106002/
[1] https://www.drugpatentwatch.com/p/tradename/ADVIL