phenoxymethylpenicillin (as potassium)
Consumer Medicine Information
What is in this leaflet
This leaflet answers some common questions about ASPECILLIN VK.
It does not contain all the available information. It does not take the place of talking
to your doctor or pharmacist.
All medicines have risks and benefits. Your doctor has weighed the risks of you taking
ASPECILLIN VK 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 your medicine.
You may need to read it again.
What ASPECILLIN VK is used for
This medicine contains the active ingredient phenoxymethylpenicillin.
It is a type of antibiotic that belongs to a group of medicines called penicillins.
ASPECILLIN VK is used to treat infections in different parts of the body caused by
bacteria. It works by killing the bacteria that are causing the infection.
ASPECILLIN VK will not work against infections caused by viruses such as colds or
Ask your doctor if you have any questions about why this medicine has been prescribed
Your doctor may have prescribed ASPECILLIN VK for another purpose.
This medicine is only available on a doctor’s prescription.
Before you take ASPECILLIN VK
When you must not take it
Do not take ASPECILLIN VK if you have an allergy to:
any medicine containing phenoxymethylpenicillin
any other penicillin medicines or cephalosporins
any of the ingredients listed at the end of this leaflet
If you have an allergic reaction to cephalosporins, you may have an increased chance
of being allergic to ASPECILLIN VK.
Some of the symptoms of an allergic reaction may include:
shortness of breath
wheezing or difficulty breathing
swelling of the face, lips, tongue or other parts of the body
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 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 any allergies to any other medicines or any other foods,
preservatives or dyes.
Tell your doctor if you have or have ever had any of the following medical conditions:
diarrhoea after taking antibiotics previously
any other health problems
Tell your doctor if you are pregnant or plan to become pregnant or are breast-feeding.
Your doctor can discuss with you the risks and benefits involved.
The active ingredient in ASPECILLIN VK passes into breast milk and there is a possibility
that your baby may be affected.
If you have not told your doctor about any of the above, tell them before you start
taking ASPECILLIN VK.
Taking other medicines
Tell your doctor or pharmacist if you are taking any other medicines, including any
that you get without a prescription from your pharmacy, supermarket or health food
Some medicines and ASPECILLIN VK may interfere with each other. These include:
probenecid, a medicine used to treat gout
antacids, medicines used to reduce heartburn or indigestion
oral contraceptive pills, medicines used for contraception
You may need to use other birth control methods while you are taking ASPECILLIN VK.
aminoglycosides, medicines used treat some bacterial infections
methotrexate, a medicine used treat rheumatoid arthritis, some cancers and inflammatory
These medicines may be affected by ASPECILLIN VK or may affect how well it works.
You may need different amounts of your medicines, or you may need to take different
Your doctor and pharmacist have more information on medicines to be careful with or
avoid while taking this medicine.
How to take ASPECILLIN VK
Follow all directions given to you by your doctor or pharmacist carefully.
They may differ from the information contained in this leaflet.
If you do not understand the instructions on the bottle, ask your doctor or pharmacist
How much to take
The usual dose is:
250 mg to 500 mg every four to six hours.
To prevent recurrence of rheumatic fever
250 mg twice a day for as long as your doctor tells you to.
The dose you take will depend on the type of treatment you are to receive. Your doctor
will decide your dose and how long you take ASPECILLIN VK for.
How to take it
Swallow the tablets whole with a glass of water.
When to take it
Take your medicine 1 hour before food.
How long to take it
Continue taking your medicine until you finish the pack or for as long as your doctor
It is important to keep taking your medicine even if you feel well.
If you forget to take it
If it is less than 4 hours before 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 you medicine
as you would normally.
Do not take double dose to make for the dose that you missed.
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 Poison Information Centre (telephone 13 11
26) for advice, or go the Accident and Emergency at the nearest hospital, if you think
that you or anyone else may have taken too much ASPECILLIN VK. Do this even if there
are no signs of discomfort or poisoning.
You may need urgent medical attention.
While you are using ASPECILLIN VK
Things you must do
If you are about to be started on any new medicine, remind your doctor and pharmacist
that you are taking ASPECILLIN VK.
Tell any other doctors, dentists, and pharmacists who treat you that you are taking
If you become pregnant while taking this medicine, tell your doctor immediately.
If your symptoms do not improve within a few days, or if they become worse, tell your
If you get diarrhoea, nausea or vomiting, tell your doctor or pharmacist immediately.
Do this even if it occurs several weeks after you have stopped taking ASPECILLIN VK.
Diarrhoea may mean that you have a serious condition affecting your bowel. You may
need urgent medical care.
If you are about to have any blood or urine tests, tell your doctor that you are taking
It may interfere with the results of some tests.
Things you must not do
Do not take any medicine for diarrhoea without first checking with your doctor or
Do not take ASPECILLIN VK to treat any other complaints unless your doctor tells you
Do not give your medicine to anyone else, even if they have the same condition as
Do not stop taking ASPECILLIN VK without checking with your doctor.
Your infection and symptoms may not clear completely.
Things to be careful of
Tell your doctor if you get a sore mouth or tongue while taking or after you have
stopped taking ASPECILLIN VK.
This could be due to a fungal infection called thrush. This may also result in fever
and irritation in your stomach.
Be careful driving or operating machinery until you know how ASPECILLIN VK affects
Tell your doctor or pharmacist as soon as possible if you do not feel well while you
are using ASPECILLIN VK.
This medicine helps most people but it may have some unwanted side effects in a few
All medicines can have side effects. Sometimes they are serious, most of the time
they are not. You may need medical attention if you get some of the side effects.
Do not be alarmed by the following lists of side effects. You may not experience any
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 or vomiting
black hairy tongue
difficulty in breathing
Tell your doctor or pharmacist if you notice anything that is making you feel unwell.
Other side effects not listed above may also occur in some people.
After using ASPECILLIN VK
Keep your tablets in the bottle until it is time to take them.
If you take the tablets out of the bottle they may not keep well.
Keep your tablets in a cool dry place where the temperature stays below 25°C.
Do not store ASPECILLIN VK 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 it looks like
ASPECILLIN VK 250 mg tablets are bright yellow, smooth, round film coated tablets.
Odour characteristic. Free of visible contamination and imperfections.
ASPECILLIN VK 500 mg tablets are bright yellow, smooth, film coated capsule shaped
tablets. Plain on one side and a break bar on the other. Odour characteristic. Free
of visible contamination and imperfections.
ASPECILLIN VK contains 250 mg or 500 mg of phenoxymethylpenicillin as the active ingredient.
The tablets also contain the following inactive ingredients:
calcium hydrogen phosphate dihydrate
Opadry AMB Yellow OY-B-32904 (ARTG PI No: 3024)
Opadry Clear OY-S-29019 (ARTG PI No: 3025)
Viatris Pty Ltd
Level 1, 30 The Bond
30-34 Hickson Road
Millers Point NSW 2000
Phone: 1800 274 276
This leaflet was prepared in March 2022.
Australian registration numbers:
ASPECILLIN VK 250 mg tablets: AUST R 200136
ASPECILLIN VK 500 mg tablets: AUST R 200137
ASPECILLIN® is a Viatris company trade mark