Advil is a brand name for ibuprofen, which is a nonsteroidal anti-inflammatory drug (NSAID) used to relieve pain and reduce fever. The duration of use for Advil depends on the individual's condition and the advice of their healthcare provider.

According to Drug Patent Watch [1], the patent for Advil expired in 1984, which means that generic versions of ibuprofen are available. This allows for multiple manufacturers to produce ibuprofen under different brand names, including Advil.

Advil's official website states that adults and children 12 years and older can take one to two tablets or capsules every four to six hours as needed, but should not exceed six tablets or capsules in 24 hours [2]. However, the website advises consulting with a healthcare provider before using Advil for more than 10 days.

GoodRx [3] notes that taking too much Advil can lead to serious health problems, such as stomach bleeding, kidney damage, and increased risk of heart attack or stroke. The maximum daily dose of ibuprofen for adults is 3200 mg, which is equivalent to 16 tablets of Advil 200 mg. However, it is recommended to take the lowest effective dose for the shortest duration possible to minimize the risk of side effects.

In conclusion, the duration of use for Advil depends on the individual's condition and the advice of their healthcare provider. Adults and children 12 years and older can take one to two tablets or capsules every four to six hours as needed, but should not exceed six tablets or capsules in 24 hours. It is recommended to consult with a healthcare provider before using Advil for more than 10 days and to take the lowest effective dose for the shortest duration possible to minimize the risk of side effects.

Sources:
[1] https://www.drugpatentwatch.com/p/tradename/ADVIL
[2] https://www.advil.com/faqs-en/advil-pain/
[3] https://www.goodrx.com/ibuprofen/how-much-is-too-much-advil-ibuprofen