How is Acyclovir different from Tamiflu? Acyclovir, an antiviral medication, is one of them. The herpes virus is prevented from replicating and spreading in the body. It won't cure herpes, but it will help manage the symptoms. Herpes virus illnesses such as genital herpes, cold sores, shingles, and chickenpox are treated with acyclovir. In patients with low protection, acyclovir is also used to...