Herpes Zoster : There are no data on treatment initiated more than 72 hours after onset of the zoster rash. Patients should be advised to initiate treatment as soon as possible after a diagnosis of herpes zoster.
Medication Guide — Acyclovir
Patient-friendly FDA guidance and safety information.
Last updated · May 12, 2026Source: DailyMed ↗
Poison Help
If you suspect an overdose or accidental ingestion, call Poison Control: 1-800-222-1222 (free, 24/7, U.S.). For life-threatening symptoms, call 911.
Sources
RxCUI: 197310
NDC: 71335-1290
Last fetched: May 12, 2026
Source: DailyMed ↗
⚠️ Disclaimer
This information is for educational purposes only and is not medical advice. Always consult your doctor, pharmacist, or other licensed healthcare professional before starting, stopping, or changing any medicine. Read full medical disclaimer.