Advil is a brand name for ibuprofen, which is a nonsteroidal anti-inflammatory drug (NSAID) used to relieve pain, reduce fever, and reduce inflammation [3]. According to MercyCare [2], Advil is best used for headaches, menstrual cramps, toothaches, muscle aches, and arthritis. Advil can be taken every four to six hours, but no more than six tablets should be taken in a 24-hour period. The duration of use should not exceed ten days unless directed by a physician [3]. Advil should not be taken if you have stomach problems, are allergic to aspirin or other NSAIDs, or are taking blood thinners [3]. It is important to follow the recommended dosage and consult with a healthcare professional before taking Advil to avoid potential side effects and drug interactions [2].

Sources:
[2] https://www.mercycare.org/healthy-living/health-education/tylenol--advil--when-to-use-which/
[3] https://www.advil.com/faqs-en/advil-pain/
[1] https://www.drugpatentwatch.com/p/tradename/ADVIL