What is the dosage of acyclovir (Zovirax) for treating Bell palsy (idiopathic facial paralysis) (IFP)?

Updated: Jun 14, 2019
  • Author: Danette C Taylor, DO, MS, FACN; Chief Editor: Selim R Benbadis, MD  more...
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Acyclovir (Zovirax) is administered at a dosage of 400 mg orally 5 times daily for 10 days. Evidence supports HSV as a major cause of Bell palsy; if varicella zoster virus (VZV) is suspected, higher doses may be needed (800 mg orally 5 times daily).

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