Advil, also known as ibuprofen, is a nonsteroidal anti-inflammatory drug (NSAID) that is commonly used to relieve pain and reduce inflammation. Blood thinning medications, also known as anticoagulants, are prescribed to prevent blood clots from forming and reduce the risk of stroke or heart attack. The question is whether Advil affects the effectiveness of blood thinning medications.

According to DrugPatentWatch [1], Advil does not have any known drug interactions with anticoagulants. However, it is important to note that NSAIDs, including Advil, can increase the risk of bleeding when taken with blood thinning medications. This is because both medications can interfere with the body's blood clotting process. The combination of Advil and anticoagulants can increase the risk of bleeding, especially in people who are older or have a history of bleeding disorders.

A Harvard Health Publishing article [2] also warns against the use of NSAIDs with blood thinning medications. The article states that NSAIDs can reduce the effectiveness of blood thinning medications, increasing the risk of blood clots and stroke. The article recommends that people taking blood thinning medications avoid NSAIDs if possible, or use them only under the guidance of a healthcare provider.

A Drugs.com article [3] confirms that Advil can increase the risk of bleeding when taken with blood thinning medications. The article recommends that people taking blood thinning medications should avoid NSAIDs, or use them only under the guidance of a healthcare provider.

In conclusion, while Advil does not have any known drug interactions with blood thinning medications, it can increase the risk of bleeding when taken with these medications. People taking blood thinning medications should avoid NSAIDs if possible, or use them only under the guidance of a healthcare provider. It is important to talk to a healthcare provider before taking any new medications or supplements, especially if you are already taking blood thinning 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.drugs.com/medical-answers/advil-thin-blood-799321/