Advil is a brand name for the drug ibuprofen, which is a nonsteroidal anti-inflammatory drug (NSAID) used to relieve pain and reduce fever. According to the official Advil website [3], the recommended dosage for adults and children 12 years and older is 1 or 2 tablets every 4 to 6 hours as needed, not to exceed 6 tablets in 24 hours. The maximum daily dose of Advil for adults is 3200 mg, while for children it depends on their weight and age.

Medscape [2] recommends a similar dosage for Advil, stating that the usual adult dose is 200-400 mg orally every 4-6 hours as needed, not to exceed 1.2 g/day. The maximum dose for children is 10 mg/kg/dose every 6-8 hours, not to exceed 40 mg/kg/day.

Drug Patent Watch [1] lists the various forms and strengths of Advil available on the market, including Advil tablets, Advil liqui-gels, Advil migraine, and Advil PM. The website also provides information on the expiration date of the patent for each product.

It is important to note that the recommended dosage of Advil may vary depending on the individual's age, weight, medical history, and other factors. It is always advisable to consult a healthcare provider before taking any medication, especially if you have any underlying health conditions or are taking other medications.

Sources:
[1] https://www.drugpatentwatch.com/p/tradename/ADVIL
[2] https://reference.medscape.com/drug/advil-motrin-ibuprofen-343289
[3] https://www.advil.com/our-products/advil-pain/advil-tablets/