Advil is a brand name for the generic drug ibuprofen, which is a nonsteroidal anti-inflammatory drug (NSAID) used to relieve pain and reduce fever [1]. According to the Advil website, the recommended dosage for adults is one or two tablets every four to six hours, but no more than six tablets in 24 hours, unless directed by a doctor [2]. It is also recommended to take Advil with food or milk to reduce the risk of stomach irritation [2].

However, it is important to note that taking Advil too frequently or in high doses can lead to serious side effects, such as stomach bleeding, kidney damage, and heart attack or stroke [3]. Therefore, it is important to follow the recommended dosage and consult with a doctor before taking Advil regularly or for an extended period of time.

In summary, Advil can be taken with food every four to six hours, but no more than six tablets in 24 hours, unless directed by a doctor. It is important to use Advil responsibly and to consult with a doctor if you have any concerns about its use.

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/