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  • Title: Valacyclovir. New indication: for genital herpes, simpler administration.
    Journal: Can Fam Physician; 1999 Jul; 45():1698-700, 1703-5. PubMed ID: 10424269.
    Abstract:
    Valacyclovir, the metabolic precursor of acyclovir, is now approved for treatment and prevention of genital infection with herpes simplex viruses. The clinical file is bulky and methodologically sound. For treatment of a first episode of genital herpes, a large comparative trial has shown that valacyclovir (1 g twice a day) is as effective as acyclovir (200 mg five times a day) when given for 10 days. For treating recurrences, two trials show that valacyclovir is as effective as acyclovir (200 mg five times a day) with a treatment period of 5 days. A daily dose of 1 g of valacyclovir is as effective as 2 g daily. Valacyclovir can be administered once a day. For prevention among patients with frequent recurrences, the efficacy of valacyclovir (500 mg/d in a single dose) has been proven in a placebo-controlled trial lasting 4 months. In these trials, valacyclovir and acyclovir were both well tolerated, with no major differences between the two drugs.
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