Acyclovir (Aciclovir): uses, side effects & brands
Written & medically reviewed by Dr. Sanjay Anbu, MBBS· Last reviewed
Acyclovir treats cold sores, genital herpes, shingles and chickenpox. It belongs to the Antiviral group. Antivirals treat specific viral infections such as herpes, shingles or influenza.
Not a prescription — no dose shown. The right dose of acyclovir depends on age, weight, kidney/liver function and the condition, so MedDroid does not show a dose here. Always get your dose from a doctor or pharmacist and the leaflet inside the pack. General educational information only.
Frequently asked questions
Do antivirals cure herpes?
They do not remove the virus for good, but they shorten outbreaks, ease symptoms and can reduce how often attacks happen.
Why start antivirals early?
They work best in the first day or two of symptoms, before the virus multiplies, so starting promptly matters.
Reviewed by Dr. Sanjay Anbu, MBBS. MedDroid is an AI medical assistant and can make mistakes. It provides general health information, not a diagnosis or medical advice — always consult a qualified clinician. In an emergency, contact your local emergency number immediately.