Famvir (famciclovir) is an antiviral drug. It slows the growth and spread of the herpes virus so that the body can fight off the infection. Famciclovir will not cure herpes, but it can lessen the symptoms of the infections.
Famvir is used to treat infections caused by herpes viruses, including genital herpes, cold sores, and shingles.
There is no cure for herpes and Famvir will not prevent you from developing symptoms in the future.
Famvir may also be used for purposes not listed in this medication guide.