Consumer Medicine Information
What is in this leaflet
This leaflet answers some common questions about famciclovir. It does not contain
all the available information. It does not take the place of talking to your doctor
All medicines have risks and benefits. Your doctor has weighed the risks of you using
this medicine against the benefits they expect it will have for you.
If you have any concerns about taking this medicine, ask your doctor or pharmacist.
Keep this leaflet with the medicine.
You may want to read it again.
What this medicine is used for
Famciclovir is used to treat shingles in adults and adolescents.
It belongs to a group of medicines called antivirals.
How it works
Shingles is a condition that is caused by a herpes virus called varicella zoster,
the same virus that causes chicken pox. The virus can become active again in the body,
even after many years, resulting in shingles. The main symptom is a rash that can
cause pain, burning and blisters.
Famciclovir works by stopping the multiplication of the virus that causes shingles.
Although famciclovir does not cure the viral infection, it helps to relieve the symptoms
and shorten their duration.
The best results are obtained if the medicine is started as soon as possible after
the first symptoms begin to appear.
Ask your doctor if you have any questions about why this medicine has been prescribed
Your doctor may have prescribed famciclovir for another reason.
This medicine is available only with a doctor's prescription.
This medicine is not addictive.
Famciclovir is not recommended for use in children under 12 years of age.
Before you take this medicine
When you must not take it
Do not take this medicine if you have an allergy to:
any of the ingredients listed at the end of this leaflet.
Some of the symptoms of an allergic reaction may include:
shortness of breath
wheezing or difficulty breathing
swelling of the face, lips, tongue, throat or other parts of the body
muscle pain or tenderness or joint pain
rash, itching or hives on the skin.
Do not take this medicine after the expiry date printed on the pack or if the packaging
is torn or shows signs of tampering.
If it has expired or is damaged, return it to your pharmacist for disposal.
If you are not sure whether you should start taking this medicine, talk to your doctor.
Before you start to take it
Tell your doctor if you have allergies to any other medicines, foods, preservatives
Tell your doctor if you have or have had any of the following medical conditions:
problems with your body's immune system, which helps to fight off infections
Tell your doctor if you are pregnant or plan to become pregnant or are breastfeeding.
It is not known whether taking this medicine during pregnancy could affect your baby
or whether famciclovir passes into the breast milk. Famciclovir should not be used
during pregnancy unless necessary. Your doctor can discuss with you the benefits and
If you have not told your doctor about any of the above, tell them before you start
taking this medicine.
Taking other medicines
Tell your doctor or pharmacist if you are taking any other medicines, including any
that you buy without a prescription from your pharmacy, supermarket or health food
Some medicines and famciclovir may interfere with each other. These include:
probenecid, used to treat gout and to increase blood levels of penicillin-type antibiotics
raloxifene, used to treat osteoporosis
medicines that can affect your kidneys.
These medicines may be affected by famciclovir or may affect how well it works. You
may need different amounts of your medicines, or you may need to take different medicines.
Your doctor and pharmacist have more information on medicines to be careful with or
avoid while taking famciclovir.
Other interactions not listed above may also occur.
How to take this medicine
Follow all directions given to you by your doctor or pharmacist carefully.
They may differ to the information contained in this leaflet.
If you do not understand the instructions on the label, ask your doctor or pharmacist
How much to take
Your doctor or pharmacist will tell you how many tablets you will need to take. This
depends on your condition and whether you are taking any other medicines.
The usual dose is one 250 mg tablet three times each day for seven days, beginning
no later than 72 hours after the rash appears.
Your doctor may have prescribed a different dose.
For people with a weakened immune system, the dose and duration of treatment may need
to be increased.
For people who have reduced kidney function, the dose may need to be reduced.
How to take it
Swallow the tablets whole with a full glass of water.
The tablets may be taken with or without food.
When to take it
Take one tablet in the morning, one tablet in the afternoon and one tablet before
going to bed at night.
Take the tablets at about the same time each day.
Taking it at the same time each day will have the best effect. It will also help you
remember when to take it.
How long to take it
Continue taking famciclovir for as long as your doctor tells you.
To help clear up your infection, you must keep taking this medicine, even if your
symptoms begin to clear up after a few days.
It is important to keep taking your medicine even if you feel well.
If you forget to take it
If it is almost time to take your next dose, skip the dose you missed and take your
next dose when you are meant to.
Otherwise, take it as soon as you remember, and then go back to taking it as you would
Do not take a double dose to make up for the one that you missed.
This may increase the chance of you getting an unwanted side effect.
If you are not sure what to do, ask your doctor or pharmacist.
If you have trouble remembering to take your medicine, ask your pharmacist for some
If you take too much (overdose)
Immediately telephone your doctor or the Poisons Information Centre (telephone 13
11 26) for advice, or go to Accident and Emergency at the nearest hospital, if you
think that you or anyone else may have taken too much famciclovir. Do this even if
there are no signs of discomfort or poisoning.
You may need urgent medical attention.
Taking too much famciclovir may affect the kidneys. In people who already have kidney
problems, it may, rarely, lead to kidney failure if their dose is not correctly lowered.
While you are taking this medicine
Things you must do
If you are about to be started on any new medicine, remind your doctor and pharmacist
that you are taking this medicine.
Tell any other doctors, dentists, and pharmacists who are treating you that you are
If you become pregnant while taking famciclovir, tell your doctor immediately.
Keep all of your doctor's appointments so that your progress can be checked.
Your doctor may do some tests from time to time to make sure the medicine is working
and to prevent unwanted side effects.
Things you must not do
Do not take this medicine to treat any other complaints unless your doctor tells you
Do not give this medicine to anyone else, even if they have the same condition as
Do not stop taking your tablets or change the dosage without checking with your doctor
If you stop your tablets suddenly, your condition may worsen, or you may have unwanted
Things to be careful of
Be careful driving, operating machinery or doing jobs that require you to be alert
until you know how famciclovir affects you.
This medicine can cause dizziness, tiredness or confusion in some people. If you have
any of these symptoms, do not drive, operate machinery or do anything else that could
Things that may help your condition
Take the following precautions to avoid spreading the virus:
Keep the areas affected by the virus as clean and dry as possible.
Wear loose-fitting clothing to avoid irritating the rash.
Avoid touching or scratching the sore area as you may spread the virus on your fingers.
Tell your doctor or pharmacist as soon as possible if you do not feel well while you
are taking famciclovir.
This medicine helps most people with shingles, but it may have unwanted side effects
in a few people. All medicines can have side effects. Sometimes they are serious,
most of the time they are not. You may need medical treatment if you get some of the
Do not be alarmed by the following lists of possible side effects. You may not experience
any of them.
Ask your doctor or pharmacist to answer any questions you may have.
Tell your doctor or pharmacist if you notice any of the following and they worry you:
nausea (feeling sick) or vomiting
itching or an itchy rash (urticaria)
abnormal liver function test results.
The above list includes the more common side effects of your medicine. They are usually
Tell your doctor as soon as possible if you notice any of the following:
a rash that is separate from the shingles rash
extreme sleepiness or confusion, usually in older people
hallucinations (seeing or hearing things that are not really there)
painful or swollen joints
aching muscles or muscle tenderness or weakness that is not caused by exercise.
The above list includes serious side effects that may require medical attention.
If any of the following happen, tell your doctor immediately or go to Accident and
Emergency at your nearest hospital:
swelling below the surface of the skin, such as swelling around the face, eye, eyelid
bruising or bleeding more easily than usual (may indicate that the number of platelets
(a type of blood cell responsible for blood clotting) in your blood is reduced)
widespread red, raised areas, blisters or sores of the lips, eyes, mouth, nasal passages
or genitals (signs of a serious skin reaction)
persistent pain in the upper right abdomen, yellowing of the skin and/or eyes, dark
urine or pale bowel motions (signs of a possible liver problem)
palpitations (signs of abnormal heart beat)
The above list includes very serious side effects. You may need urgent medical attention
or hospitalisation. The above side effects are very rare.
Tell your doctor or pharmacist if you notice anything else that is making you feel
Other side effects not listed above may also occur in some people.
Storage and disposal
Keep your medicine in the pack until it is time to take them.
If you take the tablets out of the pack, they may not keep well.
Keep your medicine in a cool dry place where the temperature stays below 25°C.
Do not store your medicine or any other medicine in the bathroom or near a sink. Do
not leave it on a window sill or in the car.
Heat and dampness can destroy some medicines.
Keep it where children cannot reach it.
A locked cupboard at least one-and-a-half metres above the ground is a good place
to store medicines.
If your doctor tells you to stop taking this medicine or the expiry date has passed,
ask your pharmacist what to do with any medicine that is left over.
What APO-Famciclovir looks like
125 mg tablets
White, round, biconvex, film-coated and engraved "FAM" over "125" on one side and
"APO" on the other side.
Blister pack sizes: 10, 28, 40 or 56 tablets. AUST R 160559.
Bottle pack sizes: 28, 40 or 56 tablets AUST R 160558.
250 mg tablets
White, round, biconvex, film-coated and engraved "FAM" over "250" on one side and
"APO" on the other side.
Blister pack sizes: 5, 14, 20, 21, 28, 30 or 56 tablets. AUST R 160556.
Bottle pack sizes: 14, 20, 21, 28, 40 or 56 tablets. AUST R 160560.
500 mg tablets
White, oval, biconvex, film-coated and engraved "FAM500" on one side and "APO" on
the other side.
Blister pack sizes: 3, 12, 14, 16, 20, 28, 30, 56 tablets. AUST R 172443.
Bottle pack sizes: 12, 14, 16, 20, 28, 30, 56 tablets. AUST R 172445.
Not all strengths, pack types and/or pack sizes may be available
Each tablet contains 125 mg, 250 mg or 500 mg of famciclovir as the active ingredient.
It also contains the following:
This medicine does not contain gluten, lactose, sucrose, tartrazine and other azo
Apotex Pty Ltd
16 Giffnock Avenue
Macquarie Park, NSW 2113
APO- and APOTEX- are registered trademarks of Apotex Inc.
This leaflet was prepared in September 2018.