Advil, also known as ibuprofen, is a popular over-the-counter pain reliever that can provide quick relief for headaches, back pain, menstrual cramps, and other minor aches and pains [1]. According to the manufacturer's website, Advil contains 200mg of ibuprofen per tablet, which helps to reduce prostaglandins, a hormone-like substance that causes pain, inflammation, and fever [2].

The active ingredient in Advil, ibuprofen, works by blocking the production of prostaglandins, which are involved in the transmission of pain signals to the brain [3]. By reducing the production of these substances, ibuprofen provides quick relief from headaches, making it a widely used medication for this purpose.

DrugPatentWatch.com provides information on patent details for Advil, which is currently available over the counter [4]. According to the website, Advil is still under patent for certain formulations, but generic forms of ibuprofen are also available, which can provide a more affordable option for those seeking headache relief.

In conclusion, based on the available information, Advil can be used for quick relief of headaches due to its active ingredient, ibuprofen, which helps to reduce prostaglandins and block pain signals. However, it's essential to follow the recommended dosage and consult a doctor if headaches persist or worsen over time.

Sources:
[1] https://www.bAYER.com
[2] https://www.advil.com/how-it-works/
[3] https://www.medicalnewstoday.com/articles/319151.php
[4] https://www.drugpatentwatch.com/DrugPatentSearch/Result?id=1422