Prescription
Antiviral
Aciclovir
Last reviewed April 2026
Who is this for?
What is this drug?
Aciclovir is an antiviral medicine that works by stopping viruses from multiplying in your body, especially the herpes virus that causes cold sores, genital herpes, and chickenpox.
What is it used for?
Cold sores (fever blisters on the lips)genital herpeschickenpoxshingles (painful rash that comes from the chickenpox virus)herpes eye infections
Prescription Required
A doctor's prescription is required to obtain this drug legally.