See the DrugPatentWatch profile for advil

According to the information provided, I found on DrugPatentWatch.com, Advil is a brand-name for Ibuprofen, which is a non-prescription, non-steroidal anti-inflammatory drug (NSAID) used to treat pain, reduce inflammation, and lower fever [1].

Regarding the time it takes for Advil to provide pain relief, the drug's effect varies from person to person, depending on factors such as the individual's metabolism, the type and severity of pain, and the dosage taken [2]. Generally, it is reported that Advil starts working within 20 to 30 minutes after ingestion [3]. However, it may take up to two hours to experience the full effects of the medication [4].

It is essential to follow the recommended dosage on the package or as directed by a healthcare professional to ensure safe and effective use of Advil [5].

In summary, Advil typically starts providing pain relief within 20 to 30 minutes, but it may take up to two hours for the full effect to kick in.

Sources:
[1] <https://www.drugpatentwatch.com/drugs/advil>
[2] <https://www.mayoclinic.org/drugs-supplements/ibuprofen-oral-route/side-effects/drg-20068884>
[3] <https://www.webmd.com/pain-management/what-to-know-about-ibuprofen-and-other-nsaids#1>
[4] <https://www.healthline.com/health/pain-relief/how-long-does-ibuprofen-take-to-work>
[5] <https://www.drugs.com/advil.html>