CONSUMER MEDICINE INFORMATION
What is in this leaflet
This leaflet answers some common questions about Postrelle-1.
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 or pharmacist will have discussed
and considered the risks of you taking Postrelle-1 against the benefits they expect
it will have for you.
If you have any concerns about taking this medicine, talk to your doctor or pharmacist.
Your doctor and pharmacist have more information.
Keep this leaflet with your medicine.
You may need to read it again.
What Postrelle-1 is used for
Postrelle-1 is an emergency contraceptive only. Postrelle-1 is not intended as a regular
method of contraception.
It contains the active ingredient levonorgestrel.
It is used to prevent pregnancy when taken within 72 hours of unprotected intercourse.
It is estimated that Postrelle-1 will prevent 85% of expected pregnancies. The sooner
that you take Postrelle-1 after unprotected intercourse, the more likely it is that
the medicine will work.
Postrelle-1 is thought to work by:
stopping your ovaries from releasing an egg
preventing sperm from fertilising any eggs you may have already released
stopping a fertilised egg from attaching itself to your womb lining.
Therefore, Postrelle-1 stops a pregnancy before it is established. It does not work
if you are already pregnant.
Postrelle-1 will not prevent you from catching sexually transmitted diseases.
Ask your doctor or pharmacist if you have any questions about why you are taking
This medicine is not addictive.
Before you take Postrelle-1
When you must not take it
Do not take Postrelle-1 if:
you are allergic to any medicine containing levonorgestrel, or any of the ingredients
listed at the end of this leaflet
you are pregnant or think you may be pregnant
you have previously had unprotected intercourse more than 72 hours earlier in the
same menstrual cycle, as you may already be pregnant
you are experiencing vaginal bleeding for which the reason is not known
you have breast cancer
the tablets do not look quite right
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 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
Before you start treatment with Postrelle-1, your doctor or pharmacist should:
check you are not already pregnant if he/she suspects you may already have been pregnant
before this occurrence of unprotected intercourse
ask you if you are breast feeding (see "After taking Postrelle-1")
ask you if you are taking any other medicines (see "Taking other medicines")
ask if you suffer from high blood pressure
advise you of the need for careful use of a barrier method of contraception until
you have your next period
advise you to see your doctor in three weeks time, especially if you have not had
a period by then
discuss the need for regular contraception
Tell your doctor if you have or have had any of the following medical conditions:
you have diabetes mellitus (with kidney, eye or nerve damage, or vascular disease)
- Diabetes mellitus is a condition in which the body does not produce enough insulin
or else the body tissues are not able to use the insulin present. This leads to hyperglycaemia
(too much sugar in the blood)
you have ischaemic heart disease (heart disease caused by reduced blood flow in the
blood vessels of the heart muscle)
you have suffered a stroke
you have had breast cancer
you have severe liver disease.
If any of these conditions apply to you it may not be suitable for you to take Postrelle-1:
you have a disease of your gastro-intestinal tract (such as Crohn's disease) that
interferes with the digestion and absorption of your food and medicines
you are vomiting or have severe diarrhoea.
If these conditions apply to you your doctor may recommend a higher dose.
If you have not told your doctor about any of the above, tell him/her before you start
Taking other medicines
Tell your doctor or pharmacist if you are taking any other medicines, including any
that you get without a prescription from a pharmacy, supermarket or health food shop.
Some medicines and Postrelle-1 may interfere with each other.
medicines used to treat epilepsy (for example, barbiturates, primidone, phenytoin,
medicines used to prevent organ transplant rejection (ciclosporin).
medicines used to treat tuberculosis (for example, rifampicin, rifabutin).
medicines used to treat HIV infection (ritonavir, efavirenz).
a medicine used to treat fungal infections (griseofulvin).
herbal remedies containing St John's Wort (Hypericum perforatum).
These medicines may be affected by Postrelle-1 or may affect how well it works.
Your doctor and pharmacist have more information on medicines to be careful with or
avoid while taking this medicine.
How to take Postrelle-1
Take 1 tablet as a single dose as soon as possible after unprotected intercourse and
no later than 72 hours (3 days) after intercourse.
The sooner that you take the tablet, the more effective the treatment is likely to
be and the more likely that an unexpected pregnancy will be prevented. It is best
to take it immediately after you receive it.
Swallow the tablet whole with a full glass of water.
If you are already using a regular method of contraception such as the contraceptive
pill, you can continue to take this at your regular time.
Your doctor or pharmacist should advise you to use a barrier contraception method
until your next period.
Postrelle-1 is not recommended for children. There is only limited information available
on levonorgestrel when taken by women aged 14-16 years and no information on its use
in younger women or children.
You should only take Postrelle-1 in emergencies and not as a regular method of contraception.
If Postrelle-1 is used more than once in a menstrual cycle it is more likely to upset
your menstrual cycle.
Follow all directions given to you by your doctor and pharmacist carefully.
They may differ from the information contained in this leaflet.
If you do not understand the instructions on the box, ask your doctor or pharmacist
If you take too much (overdose)
Immediately telephone your doctor or the Poisons Information Centre (Australia: phone
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 Postrelle-1 or if a child
has taken Postrelle-1. Do this even if there are no signs of discomfort or poisoning.
Although there have been no reports of serious harmful effects from taking too many
tablets at once, you may feel sick or have vaginal bleeding.
While you are taking Postrelle-1
If you vomit within 2 hours of taking the tablet you should return to your pharmacy,
doctor or clinic.
You will need to take an additional tablet as the first one may not have been absorbed
Things you must do
Always follow your doctor's or pharmacist's instructions carefully.
Your doctor will be happy to discuss any questions you may have with your medication.
Tell any other doctors, dentists, and pharmacists who are treating you that you have
Things you must not do
Do not give Postrelle-1 to anyone else.
Things to be careful of
Be careful driving or operating machinery until you know how Postrelle-1 affects you.
This medicine may cause dizziness or light-headedness in some people. Make sure you
know how you react to Postrelle-1 before you drive a car, operate machinery or do
anything else that could be dangerous.
Tell your doctor or pharmacist as soon as possible if you do not feel well while you
are taking Postrelle-1.
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 list of 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:
increased vaginal bleeding, irregular bleeding or spotting. Most women will have a
normal period at the expected time, but some may have their period later or earlier
than normal. If your period is more than 5 days late or is unusually light or unusually
heavy, or especially painful, you should contact your doctor or pharmacist as soon
The above list includes the more common side effects of your medicine. They are usually
mild and short-lived but 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 of the face, lips, mouth or throat which may cause difficulty in swallowing
These are very serious side effects. You may need urgent medical attention or hospitalisation.
All of these side effects are very rare.
Tell your doctor if you notice anything else that is making you feel unwell.
Other side effects not listed above may occur in some people.
Do not hesitate to report any other side effects to your doctor or pharmacist.
After taking Postrelle-1
After taking Postrelle-1, you should use other contraceptive methods if you want to
Postrelle-1 won't prevent pregnancy from further unprotected sex. Your doctor or pharmacist
should advise you to use a barrier contraception method until your next period.
You should see your doctor within 3 weeks of taking Postrelle-1.
You may experience spotting or vaginal bleeding earlier than expected.
You must see your doctor if you do not get your period within 3 weeks of taking Postrelle-1
or your period is unusually light or unusually heavy.
If Postrelle-1 does not work, you could be pregnant. Your doctor will order a pregnancy
If you continue to use the contraceptive pill and you do not have a bleed in your
pill-free week or while you are taking the non-hormonal tablets, you could be pregnant.
Your doctor will order a pregnancy test.
You should see your doctor if you do become pregnant even after taking this medicine.
There is no evidence that Postrelle-1 will harm a baby that develops in your uterus/womb,
but your doctor may want to check for an ectopic pregnancy (where the baby develops
somewhere outside the womb).
You must see your doctor immediately if you experience severe stomach pain.
On rare occasions an ectopic or tubal pregnancy could occur. This is especially important
if you have previously had an ectopic pregnancy, fallopian tube surgery or pelvic
You should discuss with your doctor other methods of long term contraception.
Postrelle-1 is only intended as an emergency measure. Discuss with your doctor other
methods of long term contraception which are more effective in preventing you from
You should not breast feed within three days after taking Postrelle-1.
Small amounts of levonorgestrel may appear in your breast milk.
Keep your tablet in the original pack until you need to take it.
If you take the tablet out of the pack it will not keep well.
Keep your tablet in a cool dry place where the temperature stays below 25°C.
Do not store Postrelle-1 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.
Do not take Postrelle-1 after the expiry date.
The expiry date is printed on the pack and the blister foil.
Return any unused or out of date medicine to your pharmacist.
What it looks like
Postrelle-1: Round, white to off-white, uncoated flat tablet debossed '145' on one
side and other side plain.
Available in blister packs containing 1 tablet.
Postrelle-1 contains 1.5 mg of levonorgestrel as the active ingredient.
It also contains the following inactive ingredients:
This medicine does not contain sucrose or gluten. This medicine contains sugars (as
Postrelle-1 is supplied in Australia by:
Alphapharm Pty Ltd
Level 1, 30 The Bond
30 - 34 Hickson Road
Millers Point NSW 2000
Australian registration number:
Postrelle-1: AUST R 221973
This leaflet was prepared in
14 February 2020