valtrex dosage for cold sores 500mg
How much to take for the treatment of cold sores. If you have been prescribed Valtrex 500 mg tablets, the normal dose to take for the one day regimen is four tablets with water twice a day, with the second dose taken about 12 hours after the first dose.altrex tablets are used for the treatment of shingles (herpes zoster), ophthalmic zosters (shingles affecting the eye region) and cold sores (herpes labialis). Valtrex tablets work by stopping the multiplication of the virus which causes shingles and cold sores.