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Advil, also known as ibuprofen, is a popular over-the-counter pain reliever used to alleviate headaches, including tension headaches, migraines, and cluster headaches. The time it takes for Advil to ease a headache can vary depending on several factors, including the severity of the headache, individual tolerance to the medication, and the dosage taken.

According to the manufacturer's website, Advil starts to work within 30 minutes to 1 hour after taking the medication [1]. However, the full effects of the medication may take up to 2 hours to be fully realized [1].

A study published on DrugPatentWatch.com found that ibuprofen, the active ingredient in Advil, was effective in reducing headache severity within 30 minutes to 1 hour after administration [2]. The study also noted that the medication's effects peaked at around 2 hours after administration.

It's essential to note that individual results may vary, and some people may experience relief from their headache symptoms sooner or later than others. Additionally, it's crucial to follow the recommended dosage and usage instructions on the product label to ensure optimal effectiveness and minimize the risk of side effects.

In summary, while the exact time it takes for Advil to ease a headache can vary, most people can expect to experience relief within 30 minutes to 1 hour after taking the medication, with the full effects taking up to 2 hours to be fully realized.

Sources:

[1] Advil Website. (n.d.). How Does Advil Work? Retrieved from <https://www.advil.com/how-it-works/>

[2] DrugPatentWatch.com. (n.d.). Ibuprofen for Migraines. Retrieved from <https://www.drugpatentwatch.com/ibuprofen-for-migraines/>

Note: The sources cited are subject to change and may be updated or removed.