Advil is a nonsteroidal anti-inflammatory drug (NSAID) commonly used to relieve pain, reduce inflammation, and lower fever. While Advil is generally considered safe and effective, there are potential stomach issues associated with its use.

According to the sources provided, stomach issues can occur as a side effect of Advil. The drug can irritate the lining of the stomach, leading to symptoms such as stomach pain, heartburn, indigestion, and even ulcers. These stomach issues are more likely to occur if Advil is taken in high doses or for a prolonged period.

To reduce the risk of stomach issues when taking Advil, it is recommended to follow certain guidelines. The Hospital for Special Surgery suggests taking the lowest effective dose for the shortest duration necessary to manage your symptoms. They also advise taking Advil with food or milk to help protect the stomach. Additionally, it is important to avoid taking Advil if you have a history of stomach ulcers or other gastrointestinal conditions.

It is worth noting that not everyone who takes Advil will experience stomach issues. However, it is essential to be aware of the potential risks and to consult a healthcare professional if you have any concerns or experience persistent stomach problems while taking Advil.

In summary, while Advil is generally safe and effective, it can cause stomach issues as a side effect. To minimize the risk, it is recommended to take the lowest effective dose for the shortest duration, take Advil with food or milk, and avoid it if you have a history of stomach ulcers or gastrointestinal conditions.

Sources:
[1] Drug Patent Watch: https://www.drugpatentwatch.com/p/tradename/ADVIL
[2] Hospital for Special Surgery: https://www.hss.edu/conditions_guidelines-reduce-side-effects-nsaids.asp
[3] GoodRx: https://www.goodrx.com/advil/advil-side-effects