Valtrex (Valacyclovir)
Purpose of Medication and Method of Action
Valtrex is an antiviral drug which is used to treat infections due to the herpes simplex virus (Types 1 and 2) and herpes zoster. When converted into its active metabolite, acyclovir, it prevents viral replication by interfering with DNA mediated reproduction.
Side Effects
The most significant side effects are: nausea (15%), headache (14%) and vomiting (6%).
Drug Interactions
None of significance reported.
Cautions and Contraindications
None known
Usual Dose
Herpes Zoster - 1 Gm. every 8 hours. Genital Herpes -Initial 1 Gm. every 8 hours; Recurrence, 500 mg every 12 hours; Suppression - 1 Gm. every 24 hours.
Patient Medication Information
These information sheets do not list all known side effects of the medications, only the most common side effects. For a complete list of side effects please contact your local pharmacy or the actual drug manufacturing company.