Valaciclovir is a guanine analogue antiviral, at an STD clinic for the treatment of herpes simplex and herpes zoster infection.It is the first drug acyclovir, which can be converted in vivo to aciclovir.
Treatment of initial episodes of genital herpes in immunocompetent or HIV-infected adults and adolescents.

Treatment of herpes labialis (perioral herpes, cold sores, fever blisters) in adults and adolescents.

Treatment of recurrent mucocutaneous HSV infections in HIV-infected adults.