Hesperian Health Guides

Antiviral Medicines

Acyclovir


Acyclovir is a medicine used to fight herpes viruses. Acyclovir does not cure herpes, but it makes the sores less painful and keeps them from spreading.

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Acyclovir may sometimes cause headache, dizziness, nausea, and vomiting.

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Do not take if you have kidney problems.

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Start acyclovir as soon as signs start to appear.

For first time infection of genital herpes:
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Give 200 mg by mouth, 5 times a day for 7 days

OR

Give 400 mg by mouth, 3 times a day for 7 days


If you have had herpes infection before:
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Give 200 mg by mouth, 5 times a day for 5 days

OR

Give 400 mg by mouth, 3 times a day for 5 days

If you have 6 or more outbreaks in a year, talk with an experienced health worker to see if taking acyclovir for a longer period will help.




This page was updated:07 Jun 2021