What is acyclovir topical?
Acyclovir is an antiviral drug. It slows the growth and spread of the herpes virus so that the body can fight off the infection. Acyclovir will not cure herpes, but it can lessen the symptoms of the infection. Acyclovir topical is used to treat cold sores and genital herpes. Acyclovir topical may also be used for purposes other than those listed in this medication guide.