Valtrex showed no effects on the fetus in animal studies; however, there has been no adequate evaluation of Valtrex or in pregnant women. Valtrex should only be used during pregnancy when the benefits to the mother outweigh risks to the fetus. The safety of Valtrex in breastfeeding infants has not been established. Methods other than breastfeeding should be considered if Valtrex must be taken. Valtrex 500mg comprimé Ce médicament est habituellement utilisé pour l'herpès génital ou pour le zona. On l'emploie aussi pour les feux sauvages, ainsi que pour d'autres indications. Il produit son plein effet après quelques jours. Mode d’emploi En règle générale, on utilise ce produit trois fois par jour. Il est possible que votre pharmacien vous ait indiqué un horaire différent. Valacyclovir comes as a tablet to take by mouth. It is usually taken every 8 hours (three times a day) for 7 days to treat shingles. To treat genital herpes it is usually taken twice a day for 5 days. VALTREX (1 gram) was unchanged by coadministration of digoxin (2 doses of 0.75 mg), single doses of antacids (Al3+ or Mg++), or multiple doses of thiazide diuretics. Acyclovir C max and AUC following a single dose of VALTREX (1 gram) increased by 8% and 32%, respectively, after a single dose of cimetidine (800 mg), or by 22% and 49%, respectively, after probenecid (1 gram), or by 30% and 78%. Om du tar Valtrex för att behandla eller förebygga genital herpes, eller om du tidigare har haft genital herpes, ska du ändå tillämpa säker sex vilket innebär användning av kondom. Det är viktigt för att förhindra att du smittar andra. Du bör inte ha sex om du har genitala sår eller blåsor. Andra läkemedel och Valtrex. Tala om för läkare eller apotekspersonal om du tar eller. Valtrex can be harmful to the kidneys, and these effects are increased when it is used together with other medicines that can harm the kidneys. Tell your doctor about all other medications you are using. You may need dose adjustments or special tests when taking certain medications together with Valtrex. Find patient medical information for Valtrex oral on WebMD including its uses, side effects and safety, interactions, pictures, warnings and user ratings. Valtrex is offered in 500 mg and 1 gram tablets, with the active ingredient valacyclovir hydrochloride. The inactive ingredients include carnauba wax , colloidal silicon dioxide, crospovidone , FD&C Blue No. 2 Lake , hypromellose , magnesium stearate , microcrystalline cellulose , polyethylene glycol , polysorbate 80 , povidone , and titanium dioxide. Valacyclovir (Valtrex) is an antiviral medicine. It is used to treat or prevent infections caused by certain kinds of viruses. Examples of these infections include herpes and shingles.This medicine will not cure herpes.It is more popular than comparable drugs. Valtrex works by preventing the herpes virus from growing and spreading. Your doctor may also prescribe Valtrex to help prevent future cold sores, which is an off-label use. In that case, you and.