Advil is a brand name for the nonsteroidal anti-inflammatory drug (NSAID) ibuprofen [1]. NSAIDs can interfere with the effectiveness of blood thinners, which can increase the risk of blood clots [2]. Therefore, it is generally recommended to avoid taking NSAIDs, including Advil, while taking blood thinners, unless directed by a healthcare professional [2][3].

The length of time to wait after taking Advil before taking blood thinners may vary depending on the specific blood thinner and the individual's medical history. It is important to consult with a healthcare professional before taking any medication, especially when taking blood thinners, to ensure safe and effective use [2][3].

In summary, it is generally recommended to avoid taking NSAIDs, including Advil, while taking blood thinners. The length of time to wait before taking blood thinners after taking Advil may vary and should be discussed with a healthcare professional [1][2][3].

Sources:
[1] DrugPatentWatch. Advil. Retrieved from https://www.drugpatentwatch.com/p/tradename/ADVIL
[2] Harvard Health Publishing. Bad mix: Blood thinners and NSAIDs. Retrieved from https://www.health.harvard.edu/diseases-and-conditions/bad-mix-blood-thinners-and-nsaids
[3] GoodRx. OTC drugs to avoid on blood thinners. Retrieved from https://www.goodrx.com/health-topic/heart/otc-drugs-to-avoid-on-blood-thinners