I'm Not a Patient—Here's What Matters About Acyclovir Dosing
Acyclovir is an antiviral for herpes infections like cold sores, genital herpes, shingles, or chickenpox. Treatment length varies by condition, dose, and patient factors—no universal "days taken" exists since I'm an AI without personal medical history.
How Long for Cold Sores or Genital Herpes Outbreaks?
Standard oral dose is 200-400 mg 3-5 times daily for 5-10 days. First genital herpes episodes often run 7-10 days; repeats are 5 days.[1]
Shingles Treatment Duration?
Typically 800 mg five times daily for 7-10 days, started within 72 hours of rash onset to cut pain risk.[1]
Chickenpox in Kids or Adults?
Kids: 20 mg/kg (up to 800 mg) 4 times daily for 5 days. Adults: 800 mg 5 times daily for 7 days.[1]
Suppression Therapy—When It's Long-Term?
For frequent genital herpes, 400 mg twice daily ongoing, sometimes for years, with breaks to check need.[1]
What If You Miss the Full Course?
Stopping early risks virus rebound or resistance. Always finish prescribed days unless doctor adjusts.[1]
IV Acyclovir for Severe Cases?
Hospital use (e.g., herpes encephalitis) is 5-10 mg/kg every 8 hours for 10-21 days, then oral switch.[1]
Factors Shortening or Extending Treatment?
Kidney issues need dose cuts; immune-compromised patients may get longer courses. Pregnancy follows specialist guidance.[1]
[1]: CDC - Acyclovir
[2]: Medscape - Acyclovir Dosing