Valacyclovir hydrochloride generally needs to be taken for 6~12 months to control no recurrence, but the specific situation varies from person to person. Vasiclovir Hydrochloride is mainly used for the treatment of chickenpox, herpes zoster type I, type II herpes simplex virus infection, generally 7 to 10 days of continuous use can be cured, if you need to control the non-recurrence of the need to take 6 to 12 months of continuous use. Prolonged use of the product may result in adverse reactions such as acne, menstrual disorders, insomnia, etc. It is recommended to stop taking the product and go to the hospital for examination. In most cases, 6 to 12 months of continuous use will not lead to recurrence, but special circumstances cannot be ruled out. During the period of taking the drug, you should follow the doctor’s instructions, regular checkups, and pay attention to hydration. The drug is contraindicated in people who are allergic to vasiclovir, in cases of dehydration or liver or kidney insufficiency, and should be used with caution by pregnant and lactating women. Vasiclovir Hydrochloride should be used under the supervision of a doctor and should not be used on its own.