Active substance: ACICLOVIR

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Patient Information Leaflet
Read all of this leaflet carefully before
you start using this medicine.
• Keep this leaflet. You may need to
read it again.
• If you have any further questions, ask
your doctor or pharmacist.
• This medicine has been prescribed for
you. Do not pass it on to others. It may
harm them, even if their symptoms
are the same as yours.
• If any of the side effects gets serious,
or if you notice any side effects not
listed in this leaflet, please tell your
doctor or pharmacist.
In this leaflet:
1. What Zovirax is and what it is used for
2. Before you use Zovirax
3. How to use Zovirax
4. Possible side effects
5. How to store Zovirax
6. Further information

1. What Zovirax is and what it is used
Zovirax Ophthalmic Ointment (called
‘Zovirax’ in this leaflet) contains a medicine
called aciclovir. This belongs to a group of
medicines called antivirals. It is used to
treat eye infections caused by the Herpes
simplex virus. It works by killing or stopping
the growth of viruses on the front of your
eyeball (cornea).

• Your vision may be blurred for 5 to 10
minutes after applying Zovirax. Wait
until you can see clearly again before
driving or using any tools or
How to apply Zovirax to your eye
1. Wash your hands.
2. Use your finger to gently pull down the
lower eyelid of your infected eye.

3. Tilt your head slightly backwards and
look up.
4. Apply 1cm (about 1⁄2 an inch) of Zovirax
to the inside of your lower eyelid. Try to
avoid the tip of the tube touching any
part of your eye.

2. Before you use Zovirax
Do not use Zovirax if:
• you are allergic (hypersensitive) to
aciclovir or valaciclovir or any of the
other ingredients (listed in Section 6).

5. Close your eye for 30 seconds.

If you are not sure, talk to your doctor or
pharmacist before using Zovirax.
Take special care with Zovirax
Check with your doctor or pharmacist
before using Zovirax if:
• you wear contact lenses. Stop
wearing them while using Zovirax.
If you are not sure, talk to your doctor or
pharmacist before using Zovirax.
Taking other medicines
Please tell your doctor or pharmacist if you
are taking or have recently taken any other
medicines. This includes medicines
obtained without prescription, including
herbal medicines.
Pregnancy and breast-feeding
Ask your doctor or pharmacist for advice
before using any medicine.
Driving and Using Machines
You may experience blurred vision after
using Zovirax Eye Ointment. Do not drive
or use any machines unless your vision
is clear.

3. How to use Zovirax
Always use Zovirax exactly as your doctor
has told you.
You should check with your doctor or
pharmacist if you are not sure.
Adults and children
• The usual dose is 1cm (about 1⁄2 an
inch) of Zovirax applied to the
infected eye five times a day.
You should space each application of
Zovirax by four hours. Suggested
times are: 7am, 11am, 3pm, 7pm
and 11pm.
• You should carry on using Zovirax for
at least 3 days after your eye has got

6. Wash your hands after applying Zovirax.
If you use more Zovirax than you
Talk to your doctor or pharmacist if you use
too much Zovirax. Zovirax eye ointment is
for use in the eye, if you swallow any talk to
your doctor or pharmacist.
If you forget to use Zovirax
• If you forget to use Zovirax, use it as
soon as you remember. However, if it
is nearly time for your next application,
skip the missed application.
• Do not use a double application to
make up for a forgotten application.
4. Possible side effects
Like all medicines, Zovirax can cause side
effects, although not everybody gets them.
The following side effects may happen with
this medicine:
Allergic reactions (affects less than 1 in
10,000 people)
If you have an allergic reaction, stop
using Zovirax and see a doctor straight
away. The signs may include:
• rash, itching or hives on your skin
• swelling of your face, lips, tongue or
other parts of your body
• shortness of breath, wheezing or
trouble breathing
• unexplained fever (high temperature)
and feeling faint, especially when
standing up.
Other side effects include:
Very common (affects more than 1 in 10
• irritation or feeling as if there is
something in your eye.

Common (affects less than 1 in 100
• mild stinging in your eye straight after
using Zovirax
• swollen, runny eyes (conjunctivitis).
Rare (affects less than 1 in 1,000 people)
• swollen eyelids.
If any of the side effects gets serious, or if
you notice any side effects not listed in this
leaflet, please tell your doctor or

5. How to store Zovirax
Keep out of the sight and reach of children.
Do not store above 25°C.
Keep the tube tightly closed when you are
not using Zovirax.
Do not use Zovirax if more than one month
has passed since you first opened the
Do not use Zovirax after the expiry date,
which is stated on the carton and tube. The
expiry date (Exp.) refers to the last day of
that month.
If the ointment becomes discoloured or
shows any other signs of deterioration, you
should seek the advice of your pharmacist
who will tell you what to do.
Medicines should not be disposed of via
wastewater or household waste. Ask your
pharmacist how to dispose of medicines
no longer required. This will help protect
the environment.

6. Further information
What Zovirax Eye Ointment contains
• The active substance is aciclovir.
• The ointment contains 3% w/w
• The other ingredient is white soft
What Zovirax looks like and contents of
the pack
Each carton contains a 4.5 g tube of
The tube has a screw cap and contains an
off-white ointment.
Manufacturer and Product Licence
This medicine is manufactured by Glaxo
Wellcome Operations UK Ltd, Harmire
Road, Barnard Castle, Great Britian. It is
procured from within the EU by the Product
Licence Holder: Swinghope Ltd, Brandon
House, Marlowe Way, Croydon CR0 4XS
and repackaged by Interport Ltd, Brandon
House, Marlowe Way, Croydon CR0 4XS.
PL No: 10380/0416
Leaflet revision date: 31/07/2013
Zovirax® is a registered trademark of
GlaxoSmithKline group of companies.
Other formats:
To listen to or request a copy of this leaflet
in Braille, large print or audio please call,
free of charge: 0800 198 5000 (UK Only).
Please be ready to give the following
Product name Zovirax Eye Ointment
Reference number 00003/0150
This is a service provided by the Royal
National Institute of Blind People.


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Source: Medicines and Healthcare Products Regulatory Agency

Disclaimer: Every effort has been made to ensure that the information provided here is accurate, up-to-date and complete, but no guarantee is made to that effect. Drug information contained herein may be time sensitive. This information has been compiled for use by healthcare practitioners and consumers in the United States. The absence of a warning for a given drug or combination thereof in no way should be construed to indicate that the drug or combination is safe, effective or appropriate for any given patient. If you have questions about the substances you are taking, check with your doctor, nurse or pharmacist.