Antiviral medication for shingles usually works in 7 to 10 days. Herpes zoster is usually treated with antiviral medications such as acyclovir, which usually works within 7 to 10 days after taking the medication, depending on factors such as the severity of the patient’s condition and his or her own physical fitness. Herpes zoster is a disease caused by varicella zoster virus infection, and antiviral treatment is usually started within 48 to 72 hours after the onset of the rash. Antiviral drugs such as acyclovir and valacyclovir are available. The effect is usually seen within 7 to 10 days after taking the medication, but if the patient has an immune deficiency, this may lead to a prolonged onset of action. If you want the treatment to be effective, early treatment, early and adequate antiviral treatment, especially for patients over 50 years old, is beneficial to reduce neuralgia and shorten the course of the disease. It is recommended that when shingles appear, you should pay attention to timely medical treatment, under the guidance of the doctor, avoid unauthorized use of medication, to prevent the triggering of adverse consequences.