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. Famciclovir is used to treat infections caused by herpes viruses, including genital herpes, cold sores, and shingles. There is no cure for herpes and famciclovir will not prevent you from developing symptoms in the future. Famciclovir may also be used for purposes not listed in this medication guide.
Famciclovir is a drug used in the treatment of infections caused by the herpes family of viruses. As an antiviral drug, famciclovir works by disrupting viral DNA synthesis. This does not mean, however, that famciclovir cures the viral infection, but what it does do is reduce the viral load present in the body. Common side effects include stomach upset and headache.