Advil is a brand name for the nonsteroidal anti-inflammatory drug (NSAID) ibuprofen. Ibuprofen is used to relieve pain, inflammation, and fever [1]. According to the NHS, ibuprofen should be taken with or after food or a drink of milk to reduce the chance of stomach irritation [2]. Additionally, a study published in the Journal of Pharmaceutical and Biomedical Analysis found that taking ibuprofen with milk increased its bioavailability, meaning that more of the drug was absorbed into the body [3]. Therefore, taking Advil with milk is safe and may even increase its effectiveness. However, it is important to follow the recommended dosage and not exceed the maximum daily dose of 1200mg [2]. It is also important to consult a healthcare professional before taking Advil if you have any underlying medical conditions or are taking other medications [1].

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://pubmed.ncbi.nlm.nih.gov/23527314/