Advil is a brand name for the drug ibuprofen, which is a nonsteroidal anti-inflammatory drug (NSAID) used to relieve pain, fever, and inflammation. According to Drug Patent Watch [1], Advil comes in various forms and dosages, ranging from 200 mg to 800 mg per tablet. However, the recommended dose of Advil depends on the severity of the condition being treated, age, and other factors. It is important to follow the instructions on the label or as directed by a healthcare professional.

As for whether you should take ibuprofen on an empty stomach, Drugs.com [2] and Healthline [3] both suggest that it is generally safe to take ibuprofen with or without food. However, taking ibuprofen with food or milk may help reduce stomach upset, which is a common side effect of NSAIDs. Additionally, taking ibuprofen with a full glass of water can also help prevent stomach irritation.

In conclusion, the recommended dose of Advil depends on the condition being treated, age, and other factors. It is important to follow the instructions on the label or as directed by a healthcare professional. While it is generally safe to take ibuprofen with or without food, taking it with food or milk may help reduce stomach upset. Drinking a full glass of water with ibuprofen can also help prevent stomach irritation.

Sources:
[1] https://www.drugpatentwatch.com/p/tradename/ADVIL
[2] https://www.drugs.com/medical-answers/you-ibuprofen-empty-stomach-3572019/
[3] https://www.healthline.com/health/ibuprofen-on-empty-stomach