Other names

Acyclovir is also called Zovirax.

What is Acyclovir for?

Acyclovir is an anti-viral medicine. It acts against the Herpes virus.

How long will I take it for?

Most people take it for five days. In exceptional circumstances some people who get regular infections take a small dose everyday. If you take acyclovir everyday to stop infections you will take it for few months, and then stop. This type of long term treatment may only be offered by your G.P.

How should I take it?

Take the tablets regularly leaving even gaps between doses. People taking short courses need to take one tablet FIVE times a day. People taking longer courses will take less tablets. Check the label on the medicine box if you are not sure. Take the tablets with half a glass of water.

What if I forget a dose?

Take as soon as you remember. If it is nearly time for your next dose, miss out the one you forgot. Do not double up.

Are there any side effects?

Most medicines can cause side effects. Acyclovir can occasionally cause sickness or cramps in the stomach.

Can I take other medicines?

Yes it is safe to take other medicines with Acyclovir though you should tell the doctor if you are on any medication. It will not affect the working of the contraceptive pill but sex should be avoided until at least the blisters have properly healed.

Can I drink alcohol?

Yes it is safe to drink alcohol whilst taking Acyclovir.