See the DrugPatentWatch profile for advil

Based on the information provided, I was unable to find the exact duration of the Advil sale. However, I can tell you that the length of sales and promotions for over-the-counter medications like Advil can vary. These sales may last anywhere from a few days to several weeks, depending on the marketing strategies of the manufacturer and retailer.

To stay updated on Advil's patent status and potential sales or promotions, you can consult resources such as DrugPatentWatch.com [1]. This website tracks drug patents and provides information on patent expirations, which can impact the pricing and availability of medications. Keep in mind that the duration of sales is not typically provided on such platforms, so it's best to stay tuned to retailers' advertisements and promotional materials for the most accurate and up-to-date information on the Advil sale.

Sources:

1. DrugPatentWatch.com. (n.d.). DrugPatentWatch - Your Pharmaceutical Intelligence Partner. https://www.drugpatentwatch.com/