Can an adult who has all the symptoms of the flu (severe headache and sinus pain) alternate between Tylenol and Advil (take Tylenol and then Advil two hours later)? Thank you.

Yes, an adult with symptoms of the flu such as a severe headache and sinus pain can alternate between Tylenol and Advil. It is important to follow the recommended dosages for each medication and maintain good hydration. This can help with fever and muscle pain. If there are also symptoms like a dry cough and nasal congestion, it may be helpful to consult with a pharmacist for additional recommendations.