Advil is a brand name for the generic drug ibuprofen, which is a nonsteroidal anti-inflammatory drug (NSAID) used to relieve pain, fever, and inflammation. While Advil is generally safe for most people to use, it is still important to consult a doctor before taking it, especially if you have pre-existing health conditions or are taking other medications.

According to the Advil website [2], people with pre-existing health conditions such as high blood pressure, heart disease, liver or kidney disease, asthma, stomach ulcers, or a history of bleeding problems should consult a doctor before taking Advil. Additionally, pregnant women should consult their doctor before taking Advil, especially during the third trimester.

WebMD [3] also notes that ibuprofen can interact with other medications, including blood thinners, corticosteroids, and certain antidepressants. Therefore, it is important to inform your doctor of all medications you are taking before starting to take Advil.

The Drug Patent Watch [1] provides information about the patent status of Advil and its active ingredient, ibuprofen, but does not provide information about its safety or whether one should consult a doctor before taking it.

In conclusion, while Advil is generally safe for most people to use, it is important to consult a doctor before taking it if you have pre-existing health conditions or are taking other medications. Pregnant women should also consult their doctor before taking Advil, especially during the third trimester. It is also important to inform your doctor of all medications you are taking before starting to take Advil.

Sources:
[1] https://www.drugpatentwatch.com/p/tradename/ADVIL
[2] https://www.advil.com/advil-safety/pre-existing-health-conditions/
[3] https://www.webmd.com/drugs/2/drug-5166-3186/ibuprofen-oral/ibuprofen-suspension-oral/details