Advil is a brand name for the drug ibuprofen [1]. It is a nonsteroidal anti-inflammatory drug (NSAID) used to treat pain, fever, and inflammation [2]. According to the NHS, ibuprofen should be taken with or after food to avoid stomach irritation [2]. It is also important to avoid taking more than the recommended dose of ibuprofen, as this can cause serious side effects such as stomach ulcers, kidney problems, and heart attacks [2].

There is no evidence to suggest that mixing milk with Advil is unsafe. However, it is important to note that Advil should be taken with food, not just milk, to avoid stomach irritation [2]. Additionally, it is always a good idea to consult with a healthcare professional before taking any medication, especially if you have any underlying health conditions or are taking other medications [3].

In conclusion, Advil (ibuprofen) should be taken with food to avoid stomach irritation, but there is no evidence to suggest that mixing it with milk is unsafe. However, it is important to consult with a healthcare professional before taking any medication, especially if you have any underlying health conditions or are taking other medications.

Sources:
[1] https://www.drugpatentwatch.com/p/tradename/ADVIL
[2] https://www.nhs.uk/medicines/ibuprofen-for-adults/how-and-when-to-take-ibuprofen/
[3] https://www.advil.com/faqs-en/advil-pain/