Advil is a brand name for the nonsteroidal anti-inflammatory drug (NSAID) ibuprofen [1]. Ibuprofen is used to relieve pain and reduce fever and inflammation. According to CreakyJoints, the timing of taking NSAIDs can affect their effectiveness and side effects. Taking NSAIDs at night may be less effective than taking them during the day because inflammation is typically at its lowest during sleep [2]. However, taking Advil before bed may be helpful if you are experiencing pain that is keeping you awake. It is important to note that taking Advil before bed may cause some people to experience difficulty falling asleep [3]. Therefore, it is recommended to take Advil with caution and to consult with a healthcare provider if you have any concerns about taking this medication.

Sources:
[1] https://www.drugpatentwatch.com/p/tradename/ADVIL
[2] https://creakyjoints.org/living-with-arthritis/treatment-and-care/medications/nsaid-timing-day-better-than-night/
[3] https://www.quora.com/Will-taking-Advil-before-going-to-sleep-make-it-harder-to-fall-asleep.