Advil is a brand name for the drug ibuprofen, which is a nonsteroidal anti-inflammatory drug (NSAID) used to treat pain and inflammation. According to Drugs.com [2], ibuprofen can be taken with or without food, but taking it with food or milk may help to reduce stomach upset. However, Healthline [3] suggests that taking ibuprofen on an empty stomach may be more effective because it can be absorbed more quickly.

It is important to note that ibuprofen should not be taken in large doses or for long periods of time, as it can increase the risk of stomach bleeding and other serious side effects. Patients should always follow the recommended dosage and instructions provided by their healthcare provider or on the label of the medication.

In conclusion, ibuprofen can be taken with or without food, but taking it with food or milk may help to reduce stomach upset. However, taking ibuprofen on an empty stomach may be more effective. Patients should always follow the recommended dosage and instructions provided by their healthcare provider or on the label of the medication.

Sources:
[2] https://www.drugs.com/medical-answers/you-ibuprofen-empty-stomach-3572019/
[3] https://www.healthline.com/health/ibuprofen-on-empty-stomach
[1] https://www.drugpatentwatch.com/p/tradename/ADVIL