Advil is a brand name for ibuprofen, a nonsteroidal anti-inflammatory drug (NSAID) used to relieve pain and reduce fever. It is not typically used to treat acid reflux. However, people who suffer from acid reflux may also experience pain and inflammation in their throat and esophagus, which can be relieved with NSAIDs like Advil.

It is important to note that NSAIDs can increase the risk of developing acid reflux or worsen existing acid reflux symptoms. Therefore, it is recommended to take the lowest effective dose of NSAIDs for the shortest possible duration to avoid potential side effects.

If you need to take Advil for pain relief while also taking medication for acid reflux, it is recommended to consult with your healthcare provider. Some acid reflux medications, such as proton pump inhibitors (PPIs) and H2 blockers, can interact with NSAIDs and increase the risk of gastrointestinal bleeding and other side effects. Your healthcare provider can help you determine the best course of treatment and advise you on any potential drug interactions.

Sources:
[1] https://www.drugpatentwatch.com/p/tradename/ADVIL
[2] https://www.mayoclinic.org/diseases-conditions/gerd/expert-answers/heartburn-gerd/faq-20058535
[3] https://medlineplus.gov/ency/patientinstructions/000197.htm