Advil is a brand name for the drug ibuprofen, which is a nonsteroidal anti-inflammatory drug (NSAID) used to treat pain, fever, and inflammation. According to the official Advil website [2], the recommended dose for adults is one or two tablets every four to six hours, not to exceed six tablets in 24 hours. However, the recommended dosage may vary depending on the severity of the pain and the individual's medical history. It is essential to follow the instructions on the label or as directed by a healthcare provider.

It is crucial to note that taking too much ibuprofen can lead to adverse effects such as stomach ulcers, bleeding, and kidney damage [3]. Therefore, it is recommended to take the lowest effective dose for the shortest duration possible. In addition, the American Academy of Pediatrics recommends that parents consult with their child's healthcare provider before giving ibuprofen to children under six months of age and to follow the dosage instructions on the label [3].

It is essential to speak with a healthcare provider before taking Advil or any other medication to ensure that it is safe and effective for the individual's specific needs. In summary, the recommended frequency of taking Advil is every four to six hours, not to exceed six tablets in 24 hours, but the dosage may vary depending on the individual's medical history and the severity of the pain. It is crucial to follow the label instructions and consult with a healthcare provider before taking Advil or any other medication [2][3].

Sources:
[1] https://www.drugpatentwatch.com/p/tradename/ADVIL
[2] https://www.advil.com/faqs-en/advil-pain/
[3] https://www.healthychildren.org/English/safety-prevention/at-home/medication-safety/Pages/Ibuprofen-for-Fever-and-Pain.aspx