Medically reviewed by Jessica Swirble, PharmD
Last updated on 5/2/2024

Drug Information | Side Effects | Use & Dosage | Request a Prescription

Acyclovir is available in the following forms:

• Oral tablets (200 mg, 400 mg, 800 mg)
  
• Oral capsules
  
• Suspension liquid
  
• Cream
  
• Ointment
  
• Intravenous formulation
  
  

The typical starting dose of acyclovir varies depending on the condition being treated, the severity of symptoms, and individual patient factors. It is important to follow your healthcare provider's instructions regarding dosage and administration.

For herpes simplex virus infections, the typical starting dose may be:

• Oral tablets: 200 mg five times daily for 10 days.
  
  

For shingles (herpes zoster), the typical dose may be:

• Oral tablets: 800 mg five times daily for 7 to 10 days.
  
  The dosage may be adjusted based on the response and tolerance to the medication. Your healthcare provider will determine the most appropriate dose based on your medical history, current medications, and response to the medication.

Acyclovir should be taken exactly as prescribed by your healthcare provider. Do not exceed the recommended dose or duration of treatment without consulting your provider.

If you have any questions about your dosage or need adjustments, contact your healthcare provider for guidance. If you need immediate medical advice or assistance, consider scheduling an online doctor appointment through a platform like Sesame.

If you miss a dose of acyclovir, take it as soon as you remember unless it is close to the time for your next scheduled dose. In that case, skip the missed dose and continue with your regular dosing schedule. Do not double the dose to make up for a missed one.

Maintain a consistent dosing schedule to ensure the effectiveness of acyclovir in managing your viral infection.

Continue taking acyclovir as prescribed by your healthcare provider, even if you start feeling better. Do not stop the medication abruptly without consulting your provider, as it may lead to a recurrence of symptoms or other complications.

Complete the full course of treatment as directed to minimize the risk of relapse.

If you have any concerns or questions about your medication, discuss them with your healthcare provider for personalized guidance and recommendations.

Store acyclovir according to the instructions provided by your healthcare provider or pharmacist. Keep it at room temperature, away from moisture, heat, and light. Ensure the container is tightly closed and out of reach of children.

Do not use expired medication or medications that appear damaged or discolored. If you have any questions about storage, consult your healthcare provider or pharmacist for guidance.