Aciclovir 800mg Tablets are an antiviral medicine used to treat shingles (herpes zoster), a painful rash caused by reactivation of the varicella-zoster virus. Shingles can cause redness, blistering, and nerve pain, often affecting one side of the body or face. Aciclovir works by stopping the virus from multiplying, helping to limit the spread, reduce symptom severity, and promote faster healing.

Although it does not eliminate the virus from the body, prompt treatment can shorten the duration of the outbreak and lower the risk of complications such as long-term nerve pain. These tablets are usually taken several times a day for a short course.