Ribavirin is useful for herpes labialis because herpes labialis is due to herpes virus infection and ribavirin is an antiviral drug. 1. Herpes on the lips, also known as herpes orofacialis, is mainly caused by herpes simplex virus infection, which may be transmitted by direct contact or indirectly through objects, and can occur especially when the immune system is weak. 2. Patients with herpes orofacialis may have clustered blisters at the corners of the mouth and lip margins, with occasional recurrences in the oral cavity. Since this is a viral infection, most of the cases will clear up on their own, but of course, antiviral medications can be given in conjunction with the doctor. 3. Ribavirin is a broad-spectrum antiviral drug, and patients can shorten the course of the disease by using ribavirin. Therefore, ribavirin is useful for oral and labial herpes. If the effect of a single drug treatment for herpes on the lips and mouth is not particularly obvious, it is recommended that the patient can go to the hospital, if necessary, with the doctor to take other antiviral drugs, the specific use of drugs need to follow the doctor’s instructions, do not unauthorized use of medication, in order to avoid adverse effects.