what is medicine acyclovir used for
- A: Acyclovir (Zovirax) is an antiviral medication that can be used in the treatment of the herpes virus, including genital herpes, cold sores, and shingles. Acyclovir can also be used to help with the chicken pox virus. The most frequently reported adverse reactions differed among clinical trials of acyclovir depending on the indication for use.