Valtrex (valacyclovir) are Zovirax (acyclovir) are very similar, but have different FDA approved indications.
Indications and Usage for Valtrex see https://www.drugs.com/pro/valtrex.html
Valtrex is indicated for the treatment of herpes zoster (shingles).
Valtrex is indicated for the treatment or suppression of genital herpes in immunocompetent individuals and for the suppression of recurrent genital herpes in HIV-infected individuals.
*Cold Sores (Herpes Labialis)
Valtrex is indicated for the treatment of cold sores (herpes labialis).
Indications and Usage for Zovirax https://www.drugs.com/pro/zovirax.html
*Herpes Zoster Infections
Zovirax is indicated for the acute treatment of herpes zoster (shingles).
Zovirax is indicated for the treatment of initial episodes and the management of recurrent episodes of genital herpes.
Zovirax is indicated for the treatment of chickenpox (varicella).
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