Unfortunately, the sources provided do not directly answer the question of when Advil was taken. The first source, Drug Patent Watch, provides information about the patent status of Advil but does not mention specific dates of when the medication was taken. The second source, Advil's official website, offers information about the history and development of Advil but does not provide specific dates either. The third source, Wikipedia's page on ibuprofen, provides general information about the drug but does not mention specific dates of when Advil was taken.

Therefore, based on the provided sources, it is not possible to determine when Advil was taken. It is important to consult a healthcare professional or refer to the instructions on the Advil packaging for guidance on when to take the medication.

Sources:
[1] Drug Patent Watch - https://www.drugpatentwatch.com/p/tradename/ADVIL
[2] Advil's official website - https://www.advil.com/advil-story/
[3] Wikipedia - https://en.wikipedia.org/wiki/Ibuprofen