Advil is a nonsteroidal anti-inflammatory drug (NSAID) that is commonly used to relieve pain and reduce inflammation. According to the Advil website [2], it is generally safe to take Advil with food or milk if you experience stomach upset after taking it. However, it is important to note that dairy products do not affect the absorption of Advil in the body [2].

The Drug Patent Watch website [1] provides information about the active ingredient in Advil, which is ibuprofen. According to the website, ibuprofen is a weak acid that is rapidly absorbed in the stomach and small intestine, regardless of the presence of food or milk. Therefore, it is unlikely that taking Advil with dairy products would have any significant effect on its absorption or effectiveness [1].

A study published in the Journal of Pharmaceutical and Biomedical Analysis [3] investigated the effect of food on the bioavailability of ibuprofen. The study found that the presence of food in the stomach did not significantly affect the absorption of ibuprofen, and that the drug was rapidly absorbed regardless of whether it was taken with or without food. The study did not specifically investigate the effect of dairy products on the absorption of ibuprofen, but it is likely that the results would be similar to those observed with other types of food [3].

In conclusion, based on the provided sources, there is no evidence to suggest that taking Advil with dairy products would have any significant effect on its absorption or effectiveness. However, if you experience stomach upset after taking Advil, it may be helpful to take it with food or milk. As with any medication, it is important to follow the instructions on the label and consult with a healthcare provider if you have any questions or concerns.

Sources:
[1] https://www.drugpatentwatch.com/p/tradename/ADVIL
[2] https://www.advil.com/faqs-en/advil-pain/
[3] https://www.ncbi.nlm.nih.gov/pmc/articles/PMC3603579/