There are no medications specifically approved to treat Bell's palsy. Underlying medical conditions that lead to facial nerve disorder are treated specifically according to the specific condition that is responsible for the damage to the nerve. Steroid medications ( corticosteroids ) are the best treatment for Bell's palsy, and it is recommended that all patients be treated. The usual amount is one milligram per kilogram body weight of prednisone (or steroid alternative) per day for 7 to 14 days. Recently, antiviral medications like acyclovir ( Zovirax ) given in conjunction with steroids have been demonstrated to increase recovery. Doses of the antiviral agent will vary with the drug chosen.