Advil is a nonsteroidal anti-inflammatory drug (NSAID) used to treat pain and inflammation [1]. It is important to note that NSAIDs like Advil can cause stomach problems, including heartburn, indigestion, and stomach ulcers [2]. These side effects can be worsened if taken with antibiotics, particularly those in the tetracycline family [3]. Tetracyclines can bind to the metal ions in Advil, reducing its effectiveness and potentially increasing the risk of side effects [3]. Additionally, both Advil and tetracyclines can cause ringing in the ears as a side effect [3]. Therefore, it is important to talk to a healthcare provider before taking Advil with antibiotics, especially tetracyclines, to avoid worsening side effects.

Sources:
[1] https://www.drugpatentwatch.com/p/tradename/ADVIL
[2] https://www.mayoclinic.org/diseases-conditions/gerd/expert-answers/heartburn-gerd/faq-20058535
[3] https://www.goodrx.com/drugs/side-effects/these-11-prescriptions-may-cause-ringing-in-the-ears