There is no accumulation of vaxilovir tablets after oral administration, so patients can take it for a long time, and there is no absolute deadline for stopping it. Patients are advised to monitor liver and kidney function regularly while taking the drug. Valacyclovir is a precursor drug to acyclovir, which is converted into acyclovir when taken orally into the body and exerts an antiviral effect. There is no accumulation of acyclovir, and excess drug is excreted from the kidneys, so patients will not be poisoned by accumulation of the drug due to long-term use. Vaciclovir mainly treats chickenpox, herpes zoster, herpes simplex, and genital herpes. Generally only patients with recurrent genital herpes need to take it orally for a long time, and the specific duration and dosage should be used under the guidance of a dermatologist. Vaxilovir is metabolized in the liver after conversion to acyclovir in the body and excreted via the kidneys, so consult a dermatologist or nephrologist when using it in people with hepatic or renal insufficiency or in the elderly.