Advil and aspirin are both nonsteroidal anti-inflammatory drugs (NSAIDs) that are used to relieve pain and reduce inflammation. However, taking both drugs together can increase the risk of side effects such as stomach bleeding and ulcers [2]. Therefore, it is important to consult with a healthcare provider before taking both drugs together.

Advil (ibuprofen) is a brand name for the drug ibuprofen, which is available over-the-counter and in prescription form. It is typically taken every 4-6 hours, but the maximum daily dose should not exceed 3200mg [1].

Aspirin is also available over-the-counter and in prescription form. It is typically taken every 4-6 hours, but the maximum daily dose should not exceed 4000mg [2].

According to the FDA, taking aspirin and ibuprofen together is generally not recommended unless directed by a healthcare provider. If a healthcare provider does recommend taking both drugs together, they may recommend taking them at different times to reduce the risk of side effects [2].

In summary, Advil can be taken every 4-6 hours, but the maximum daily dose should not exceed 3200mg. Aspirin can also be taken every 4-6 hours, but the maximum daily dose should not exceed 4000mg. Taking both drugs together is generally not recommended unless directed by a healthcare provider. It is important to consult with a healthcare provider before taking both drugs together to reduce the risk of side effects [1][2][3].

Sources:
[1] https://www.drugpatentwatch.com/p/tradename/ADVIL
[2] https://www.fda.gov/drugs/postmarket-drug-safety-information-patients-and-providers/information-about-taking-ibuprofen-and-aspirin-together
[3] https://www.medicalnewstoday.com/articles/322793