Antiviral medicines
As most cases of Bell's palsy are probably due to a viral infection, it seems logical that antiviral medicines may help. Some medicines can stop the chickenpox and cold sore virus from multiplying. It is possible that taking a course of steroids plus a course of antiviral medicine may work a little better than taking a course of steroids alone. However, the research trials give conflicting results about this. If there is any benefit from this combination, it is likely to be small.