Advil is a nonsteroidal anti-inflammatory drug (NSAID) that is used to relieve pain, inflammation, and fever. It is a brand name for ibuprofen, which is available over-the-counter and by prescription. Like any medication, Advil can cause side effects, and the duration of these side effects can vary depending on the individual.

According to Drugs.com [3], common side effects of Advil include stomach pain, heartburn, nausea, and dizziness. These side effects are usually mild and go away on their own within a few days. However, if they persist or become severe, it is important to talk to a healthcare provider.

GoodRx [2] notes that serious side effects of Advil are rare but can occur. These include allergic reactions, stomach ulcers, and kidney damage. If any of these side effects occur, medical attention should be sought immediately.

DrugPatentWatch [1] does not provide information on the duration of Advil side effects, but it is important to note that the duration can vary depending on the individual and the severity of the side effects. If someone experiences side effects that are severe or last for an extended period of time, they should speak with a healthcare provider.

In summary, the duration of Advil side effects can vary depending on the individual and the severity of the side effects. Common side effects are usually mild and go away on their own within a few days, while serious side effects are rare but can occur and require immediate medical attention. If someone is concerned about the duration of their Advil side effects, they should speak with a healthcare provider.

Sources:
[1] https://www.drugpatentwatch.com/p/tradename/ADVIL
[2] https://www.goodrx.com/advil/advil-side-effects
[3] https://www.drugs.com/sfx/advil-side-effects.html