Advil is a brand name for ibuprofen, a nonsteroidal anti-inflammatory drug (NSAID) used to relieve pain and reduce fever. According to the sources provided, Advil can cause several side effects. The most common side effects of Advil are stomach pain, nausea, vomiting, and indigestion. These side effects can be reduced by taking Advil with food or milk. Advil can also cause dizziness, headache, and drowsiness.

In rare cases, Advil can cause serious side effects, such as stomach bleeding, kidney problems, and allergic reactions. These side effects can be life-threatening and require immediate medical attention. People who have a history of stomach ulcers, liver or kidney disease, high blood pressure, heart disease, or asthma should consult their doctor before taking Advil.

It is essential to follow the recommended dosage and not exceed the maximum daily dose of Advil. Taking more than the recommended dose can increase the risk of side effects. Advil should not be taken with other NSAIDs, such as aspirin or naproxen, as this can increase the risk of stomach bleeding.

In conclusion, Advil can cause several side effects, ranging from mild to severe. It is essential to follow the recommended dosage and not exceed the maximum daily dose. People who have a history of certain medical conditions should consult their doctor before taking Advil. If you experience any side effects while taking Advil, you should contact your doctor immediately.

Sources:
[1] https://www.drugpatentwatch.com/p/tradename/ADVIL
[2] https://www.goodrx.com/advil/advil-side-effects
[3] https://medlineplus.gov/druginfo/meds/a682159.html