Advil is a nonsteroidal anti-inflammatory drug (NSAID) that is commonly used to relieve pain, reduce fever, and alleviate inflammation. The active ingredient in Advil is ibuprofen, which works by blocking the production of certain chemicals in the body that cause pain and inflammation [1].

According to the Advil website, the recommended dose for adults is one or two tablets every four to six hours as needed, up to a maximum of six tablets in 24 hours [2]. It is important to follow the recommended dosage and not exceed the maximum daily dose, as taking too much Advil can increase the risk of side effects such as stomach bleeding, kidney damage, and heart problems [3].

However, it is important to note that the frequency and duration of Advil use should be determined by a healthcare professional based on individual needs and medical history. People with certain medical conditions, such as liver or kidney disease, high blood pressure, or a history of stomach ulcers, may need to take a lower dose or avoid Advil altogether [3].

In summary, Advil can be taken every four to six hours as needed, up to a maximum of six tablets in 24 hours, but it is important to follow the recommended dosage and consult a healthcare professional before using Advil regularly or for an extended period of time [1][2][3].

Sources:
[1] https://www.drugpatentwatch.com/p/tradename/ADVIL
[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/