Antiviral Agents Added to Corticosteroids for Early Treatment of Adults With Acute Idiopathic Facial Nerve Paralysis (Bell Palsy).

CLINICAL QUESTION Compared with oral corticosteroids alone, are oral antiviral drugs associated with improved outcomes when combined with oral corticosteroids in patients presenting within 72 hours of the onset of Bell palsy? BOTTOM LINE Compared with oral corticosteroids alone, the addition of acyclovir, valacyclovir, or famcyclovir to oral corticosteroids for treatment of Bell palsy was associated with a higher proportion of people who recovered at 3- to 12- month follow-up. The quality of evidence is limited by heterogeneity, imprecision of the result estimates, and risk of bias.