Advil is a brand name for ibuprofen, a nonsteroidal anti-inflammatory drug (NSAID) used to relieve pain and reduce fever. The recommended dosage of Advil depends on the age, weight, and medical condition of the patient.

For adults and children 12 years and older, the recommended dose of Advil is 200-400 mg every 4-6 hours as needed, not to exceed 1200 mg in 24 hours [2][3]. It is important to follow the dosage instructions on the label and not exceed the recommended dose, as taking too much Advil can cause serious side effects such as stomach bleeding, kidney damage, and heart attack [3].

For children under 12 years of age, it is important to consult with a doctor before giving Advil, as the dosage will depend on the child's age and weight [2]. Advil should not be given to infants under 6 months of age without a doctor's approval [3].

It is also important to note that Advil should be taken with food or milk to help prevent stomach upset, and should not be taken with other NSAIDs or blood thinners without a doctor's approval [3].

In summary, the recommended dosage of Advil for adults and children 12 years and older is 200-400 mg every 4-6 hours as needed, not to exceed 1200 mg in 24 hours. However, it is important to consult with a doctor before giving Advil to children under 12 years of age, and to follow the dosage instructions on the label to avoid serious side effects.

Sources:
[2] https://www.advil.com/our-products/advil-pain/advil-tablets/
[3] https://www.drugs.com/advil.html