Acyclovir

Acyclovir is an antiviral medication used to manage infections caused by certain viruses. It is commonly used to treat conditions related to the herpes virus.

This medication helps reduce the severity and length of outbreaks, but it is not a cure for these infections.

Information about Acyclovir

Acyclovir Uses

Acyclovir is typically used for managing viral infections. Here are some common uses:

  • Treatment of herpes simplex virus infections
  • Management of shingles (herpes zoster)
  • Control of genital herpes outbreaks
  • Prevention of recurrent herpes infections
  • Treatment of chickenpox (varicella)

How Acyclovir Works

Acyclovir works by interfering with the virus’s ability to reproduce in the body. It targets the viral DNA, preventing it from multiplying.

This action helps to control the infection and reduce symptoms, although it does not eliminate the virus from the body.

Common side effects of Acyclovir

Not everyone experiences side effects with Acyclovir, and many are mild and temporary. Here are some common side effects:

  • Nausea
  • Diarrhea
  • Headache
  • Fatigue
  • Dizziness
  • Abdominal pain
  • Skin rash

If you experience serious or persistent symptoms, contact your doctor.

CONTENT DETAILS

Written By
Douglas C. Goldberg, MD
Reviewed By
Philip Schein, MD
Last updated
28 Nov 2025 | 03:00 PM (UTC)

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Expert advice for Acyclovir

  • Take Acyclovir as directed by your healthcare provider.
  • Avoid mixing with heavy alcohol consumption.
  • Inform your doctor about any other medications you are taking to avoid interactions.
  • Do not start or stop any medication without consulting your doctor.
  • Stay hydrated while taking this medication.

Always consult your doctor for personalized medical advice.

Frequently Asked Questions

How long does it take for Acyclovir to work?

Acyclovir starts working shortly after you begin taking it, but it may take a few days to notice improvement in symptoms.

Can I take Acyclovir with other medications?

Acyclovir can interact with other medications. It’s important to inform your doctor about all the medications you are taking.

Is Acyclovir safe for long-term use?

Your doctor will determine if long-term use of Acyclovir is appropriate based on your condition and response to treatment.

What should I do if I miss a dose of Acyclovir?

If you miss a dose, take it as soon as you remember. If it’s almost time for your next dose, skip the missed dose and continue with your regular schedule.

Can Acyclovir prevent the spread of herpes?

Acyclovir can help manage symptoms but may not prevent the spread of herpes. Practicing safe measures is recommended to reduce transmission.

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