Advil is a nonsteroidal anti-inflammatory drug (NSAID) that is used to relieve pain and reduce inflammation. It contains ibuprofen, which can interfere with blood clotting and may increase the risk of bleeding when taken with blood thinners. According to Health Harvard Medical School [2], taking Advil with blood thinners such as warfarin or heparin can increase the risk of bleeding. Therefore, it is not recommended to take Advil with blood thinners unless directed by a doctor.

The website Drug Patent Watch [1] provides information about the active ingredients in Advil, which is ibuprofen. It also lists the different formulations and strengths of Advil that are available in the market. The website does not provide any information about the interaction of Advil with blood thinners.

GoodRx [3] also warns against taking NSAIDs like Advil with blood thinners. It recommends that people who are taking blood thinners should avoid over-the-counter pain relievers that contain aspirin, ibuprofen, or naproxen, as they can increase the risk of bleeding.

In conclusion, taking Advil with blood thinners can increase the risk of bleeding, and it is not recommended unless directed by a doctor. People who are taking blood thinners should avoid over-the-counter pain relievers that contain aspirin, ibuprofen, or naproxen. It is important to consult with a doctor or pharmacist before taking any medication, especially if you are taking other medications.

Sources:
[1] https://www.drugpatentwatch.com/p/tradename/ADVIL
[2] https://www.health.harvard.edu/diseases-and-conditions/bad-mix-blood-thinners-and-nsaids
[3] https://www.goodrx.com/health-topic/heart/otc-drugs-to-avoid-on-blood-thinners