Advil is a brand name for the drug ibuprofen, which is a nonsteroidal anti-inflammatory drug (NSAID) used to relieve pain, reduce fever, and decrease inflammation. As with any medication, Advil may cause side effects. According to MedlinePlus [2], common side effects of Advil include upset stomach, nausea, vomiting, bloating, gas, constipation, diarrhea, dizziness, headache, nervousness, and skin rash. These side effects are usually mild and go away on their own. However, some people may experience more serious side effects, such as stomach bleeding, kidney damage, and allergic reactions. It is important to seek medical attention immediately if you experience any of these serious side effects.

Drugpatentwatch [1] mentions that Advil has been on the market for over 30 years and has a long history of safe and effective use when taken as directed. However, it is important to follow the recommended dosage and not exceed the maximum daily dose of 1200 mg for adults. Taking too much Advil can increase the risk of side effects and may cause serious health problems.

GoodRx [3] also mentions that Advil may interact with other medications, such as blood thinners, steroids, and antidepressants. It is important to inform your doctor or pharmacist of all the medications you are taking before using Advil to avoid any potential interactions.

In conclusion, while Advil is generally safe and effective for relieving pain and reducing inflammation, it may cause side effects, particularly if taken in excess or in combination with other medications. It is important to follow the recommended dosage and seek medical attention if you experience any serious side effects. Always consult with your doctor or pharmacist before taking any medication.

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