Advil is a brand name for ibuprofen, a nonsteroidal anti-inflammatory drug (NSAID) used to relieve pain and reduce fever [3]. Like any other medication, Advil can cause side effects, some of which can be serious.

Common side effects of Advil include stomach pain, heartburn, nausea, and vomiting [2]. It can also cause dizziness, headache, and nervousness [3]. If these side effects persist or worsen, patients are advised to contact their healthcare provider immediately.

Advil can also cause more severe side effects such as gastrointestinal bleeding, which can lead to hospitalization or even death [1]. It can also cause kidney damage, especially in patients who already have kidney problems [2]. In rare cases, Advil can cause an allergic reaction, which can be life-threatening [3].

It is important to note that Advil should not be taken by patients who have had an allergic reaction to aspirin or other NSAIDs [3]. Patients who have a history of stomach ulcers, bleeding problems, or heart disease should also consult their healthcare provider before taking Advil.

In conclusion, Advil can cause a range of side effects, some of which can be serious. Patients should always consult their healthcare provider before taking any medication and report any side effects immediately.

Sources:
[1] https://www.drugpatentwatch.com/p/tradename/ADVIL
[2] https://www.goodrx.com/advil/advil-side-effects
[3] https://www.mayoclinic.org/drugs-supplements/ibuprofen-oral-route/side-effects/drg-20070602?p=1