Acyclovir

Acyclovir is used to decrease pain and speed the healing of sores or blisters in people who have varicella (chickenpox), herpes zoster (shingles; a rash that can occur in people who have had chickenpox in the past), and first-time or repeat outbreaks of genital herpes ... Acyclovir is also sometimes used to prevent outbreaks of genital herpes in people who are infected ...