Advil is a brand name for the drug ibuprofen, which belongs to a class of medications called nonsteroidal anti-inflammatory drugs (NSAIDs) [1]. Advil is used to relieve pain, fever, and inflammation. However, according to GoodRx, ibuprofen, the active ingredient in Advil, may raise blood pressure [2]. The increase in blood pressure can be a result of the medication's effect on the kidneys, which can lead to fluid retention and an increase in blood pressure [3]. In addition, WebMD states that NSAIDs like ibuprofen can interfere with the effectiveness of blood pressure-lowering medications [3]. It is important to note that not everyone who takes Advil will experience an increase in blood pressure, and the risk may be higher for people with pre-existing high blood pressure or heart disease. It is recommended that individuals with high blood pressure or heart disease consult their healthcare provider before taking Advil or any other NSAID [3].

In conclusion, Advil, which contains ibuprofen, may increase blood pressure, particularly in individuals with pre-existing high blood pressure or heart disease. The medication's effect on the kidneys can lead to fluid retention and an increase in blood pressure. Individuals with high blood pressure or heart disease should consult their healthcare provider before taking Advil or any other NSAID [2][3].

Sources:
[1] https://www.drugpatentwatch.com/p/tradename/ADVIL
[2] https://www.goodrx.com/ibuprofen/ibuprofen-advil-raise-blood-pressure
[3] https://www.webmd.com/hypertension-high-blood-pressure/guide/medications-cause