There is no information available in the provided sources about how often one can use Advil coupons. However, Advil is an over-the-counter medication that contains ibuprofen and is used to relieve pain and reduce fever [2]. According to the Advil website, the recommended dosage for adults is 1-2 tablets every 4-6 hours as needed, with a maximum daily dose of 6 tablets in 24 hours [2]. It is important to follow the recommended dosage instructions to avoid potential side effects such as stomach bleeding or kidney damage [3].

As for taking Advil with other pain relievers, such as Tylenol (acetaminophen), it is generally safe to do so as long as you follow the recommended dosages and do not exceed the maximum daily dose of either medication [3]. However, it is always best to consult with a healthcare professional before combining medications.

In conclusion, the provided sources do not offer information about how often one can use Advil coupons. It is important to follow the recommended dosage instructions and consult with a healthcare professional before combining medications.

Sources:
[1] https://www.drugpatentwatch.com/p/tradename/ADVIL
[2] https://www.advil.com/faqs-en/advil-pain/
[3] https://www.goodrx.com/classes/nsaids/is-it-safe-to-take-tylenol-acetaminophen-with-advil-or-motrin-ibuprofen