Consumer Medicine Information (CMI) summary
The
full CMI on the next page has more details. If you are worried about using this medicine,
speak to your doctor or pharmacist.
1. Why am I using IMDUR®?
IMDUR contains the active ingredient isosorbide mononitrate. Imdur is used to prevent
angina.
2. What should I know before I use IMDUR®?
Do not use if you have ever had an allergic reaction to IMDUR or any of the ingredients
listed at the end of the CMI.
Talk to your doctor if you have any other medical conditions, take any other medicines,
or are pregnant or plan to become pregnant or are breastfeeding.
3. What if I am taking other medicines?
Some medicines may interfere with IMDUR and affect how it works.
4. How do I use IMDUR®?
Take one IMDUR modified release tablet every day, at about the same time.
If your doctor tells you to take two 60mg IMDUR modified release tablets each day,
take both tablets at the same time.
5. What should I know while using IMDUR®?
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Things you should do
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Take IMDUR modified release tablets regularly once every day
Remind any doctor, dentist or pharmacist visit that you are using IMDUR.
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Things you should not do
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Do not stop using this medicine suddenly
Do not use IMDUR modified release tablets to relieve acute attacks of angina.
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Driving or using machines
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Be careful driving or operating machinery until you know how IMDUR affects you.
IMDUR may cause dizziness and fainting in some patients
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Drinking alcohol
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Be careful when drinking alcohol while you are using IMDUR
If you drink alcohol while you are taking IMDUR, you may feel dizzy or faint.
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Looking after your medicine
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Keep it in a cool dry place where the temperature stays below 30°C.
Keep your IMDUR modified release tablets in the blister pack until it is time to take
them
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6. Are there any side effects?
Headache is the most common side effect while taking IMDUR. You may also experience
feeling faint, dizziness, fatigue, and muscle tenderness or weakness.
Active ingredient(s): Isosorbide mononitrate
Full Consumer Medicine Information (CMI)
This leaflet provides important information about using IMDUR. You should also speak to your doctor or pharmacist if you would like further information
or if you have any concerns or questions about using IMDUR.
Where to find information in this leaflet:
1. Why am I using IMDUR®?
IMDUR
contains the active ingredient Isosorbide mononitrate. IMDUR is belongs to a group of medicines called nitrates.
IMDUR is used to prevent angina.
Angina is a pain or uncomfortable feeling in the chest, often spreading to the arms
or the neck and sometimes to the shoulders and back. This is caused by too little
blood and oxygen getting to the heart.
The pain of angina is usually brought on by exercise or stress.
IMDUR works by relaxing the blood vessels, letting more blood and oxygen reach the
heart.
Your doctor will have explained why you are being treated with IMDUR and told you
what dose to take.
2. What should I know before I use IMDUR®?
Warnings
Do not use IMDUR if:
You are allergic to isosorbide mononitrate or food containing nitrates or nitrites
or any of the ingredients listed at the end of this leaflet. Always check the ingredients
to make sure you can use this medicine.
You have one of the following conditions:
Low blood pressure
Shock including those caused by low blood pressure or failing heart
Pericarditis (swelling around the heart)
Weakened muscle of the heart
You are taking sildenafil (Viagra), vardenafil (Levitra), tadalafil (Cialis).
Check with your doctor if you:
Have any allergies to any medicine, foods, preservatives or dyes.
If you have an allergic reaction you may get a skin rash, hayfever, asthma or feel
faint.
Have any of these medical conditions:
any illness affecting your liver or kidneys
low blood pressure (this can make you feel faint, weak or dizzy, especially when you
stand up suddenly)
heart and blood vessel problems
It may not be safe for you to take IMDUR if you have any of these conditions.
Do not use IMDUR to treat acute angina.
IMDUR modified release tablets must be taken once daily.
Do not stop taking it abruptly.
During treatment, you may be at risk of developing certain side effects. It is important
you understand these risks and how to monitor for them. See additional information
under Section
6. Are there any side effects?
Pregnancy and breastfeeding
Do not use IMDUR if you are pregnant or breast feeding unless your doctor says it
is safe.
Check with your doctor if you are pregnant or intend to become pregnant.
It is not know if it is safe for you to take it while you are pregnant. It may affect
your baby.
Talk to your doctor if you are breastfeeding or intend to breastfeed.
It is not known if your baby can take in IMDUR from breast milk if you are breast
feeding.
Ask your doctor about the risks and benefits involved.
Use in children
Do not give IMDUR to children.
There is no specific information about use in children, so IMDUR is not recommended
for use in children. Always ask your doctor before giving medicines to children.
3. What if I am taking other medicines?
Tell your doctor or pharmacist if you are taking any other medicines, including any
medicines, vitamins or supplements that you buy without a prescription from your pharmacy,
supermarket or health food shop.
Some medicines may interfere with IMDUR and affect how it works.
Phosphodiesterase inhibitors such as sildenafil (Viagra*), vardenafil (Levitra=),
tadalafil (Cialis+) can result in serious side-effects such as syncope or myocardial
infarction
Calcium antagonists, which can cause orthostatic hypotension
Check with your doctor or pharmacist if you are not sure about what medicines, vitamins
or supplements you are taking and if these affect IMDUR.
4. How do I use IMDUR®?
How much to take
Take one IMDUR modified release tablet every day, at about the same time.
If your doctor tells you to take two 60mg IMDUR modified release tablets each day,
take both tablets at the same time.
Taking IMDUR modified release tablets at 24-hour intervals makes sure they keep working
properly.
Swallow IMDUR modified release tablets whole, with half a glass of water or other
liquid e.g. fruit juice, milk. Do not chew or crush the tablets.
The 60mg modified release tablet can be broken in half if care is taken not to crumble
them.
IMDUR modified release tablets are designed to let the drug out over a number of hours.
If they are crushed or chewed they won't work properly.
IMDUR modified release tablets are composed of a waxy substance that does not dissolve
in the body. You may find the outer shell of the tablets in your bowel motions. The
medication in them has already been absorbed by the body
Follow the instructions provided and use IMDUR until your doctor tells you to stop.
If you forget to take IMDUR
If you forget to take a dose, take it as soon as you remember, as long as it is not
more than eight (8) hours late.
If it is more than eight (8) hours after you should have taken IMDUR, wait until the
right time the next day to take it.
Do not double the dose.
You may find that you will need to use the tablets or spray that your doctor has given
you to use during angina attacks if you miss a dose of IMDUR.
If you have trouble remembering when to take your medicine, ask your pharmacist for
some
If you take too much IMDUR
If you think that you have taken too much IMDUR, you may need urgent medical attention.
If you take too many IMDUR modified release tablets you will have a pulsing headache.
You may also feel excited, flushed, have cold sweats, nausea (feeling sick) and vomit.
You should immediately:
phone the Poisons Information Centre
(by calling
13 11 26), or
contact your doctor, or
go to the Emergency Department at your nearest hospital.
You should do this even if there are no signs of discomfort or poisoning.
5. What should I know while using IMDUR®?
Things you should do
Take IMDUR regularly once every day.
If you don't you will be more likely to get attacks of angina.
Call your doctor straight away if you:
Continue to get angina attacks, or they become more frequent, while you are taking
IMDUR.
Remind any doctor, dentist or pharmacist you visit that you are using IMDUR.
Things you should not do
Do not use IMDUR to relieve acute attacks of angina.
Your doctor will have given you other tablets or a spray to use when you get attacks
of angina.
Do not take medicines known as phosphodiesterase type 5 inhibitor used to treat impotence
(or erectile dysfunction) whilst on IMDUR.
Do not stop taking IMDUR unless you have discussed it with your doctor.
Do not use IMDUR for any other complaints unless your doctor tells you to.
Do not give your medicine to anyone else, even if they have the same condition as
you.
Things to be careful of
You will probably feel better when you start taking IMDUR but be careful not to overdo
physical activities straight away.
You will need time to improve your physical fitness.
Driving or using machines
Be careful before you drive or use any machines or tools until you know how IMDUR
affects you.
IMDUR may cause dizziness and fainting in some patients, especially when you first
start to take it. Make sure you know how you feel when you are taking IMDUR before
you drive a car, operate machinery, or do anything else that could be dangerous if
you are dizzy.
Drinking alcohol
Tell your doctor if you drink alcohol.
If you drink alcohol while you are taking IMDUR, your blood pressure may drop, making
you feel dizzy or faint.
Please talk to your doctor or pharmacist about these possibilities if you think they
may bother you.
Looking after your medicine
Keep your IMDUR modified release tablets in the blister pack until it is time to take
them.
If you take IMDUR out of the blister pack it will not keep well.
Keep it in a cool dry place where the temperature stays below 30°C.
Keep it where young children cannot reach it.
Follow the instructions in the carton on how to take care of your medicine properly.
Store it in a cool dry place away from moisture, heat or sunlight; for example, do
not store it:
in the bathroom or near a sink, or
in the car or on window sills.
Getting rid of any unwanted medicine
If you no longer need to use this medicine or it is out of date, take it to any pharmacy
for safe disposal.
Do not use this medicine after the expiry date.
6. Are there any side effects?
All medicines can have side effects. If you do experience any side effects, most of
them are minor and temporary. However, some side effects may need medical attention.
See the information below and, if you need to, ask your doctor or pharmacist if you
have any further questions about side effects.
Side effects
Tell your doctor or pharmacist if you notice anything else that may be making you
feel unwell.
Other side effects not listed here may occur in some people.
Reporting side effects
After you have received medical advice for any side effects you experience, you can
report side effects to the Therapeutic Goods Administration online at
www.tga.gov.au/reporting-problems . By reporting side effects, you can help provide more information on the safety of
this medicine.
Always make sure you speak to your doctor or pharmacist before you decide to stop
taking any of your medicines.
7. Product details
This medicine is only available with a doctor's prescription.
What IMDUR contains
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Active ingredient
(main ingredient)
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Isosorbide mononitrate 60mg or 120mg
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Other ingredients
(inactive ingredients)
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Aluminium sodium silicate
Synthetic paraffin
Magnesium stearate
Hyprolose
Hypromellose
Colloidal anhydrous silica
Macrogol 6000
Titanium dioxide
Iron oxide yellow (60 mg only)
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Do not take this medicine if you are allergic to any of these ingredients.
What IMDUR looks like
IMDUR 60mg modified release tablets (AUST-R 46390) are yellow, oval tablets, scored
on both sides, marked A/ID.
IMDUR 120mg modified release tablets (AUST-R 62795) are whitish, oval tablets marked
A/IF
Who distributes IMDUR
Clinect Pty Ltd,
120-132 Atlantic Drive,
Keysborough, VIC 3173,
Australia
Free Call Australia: 1800 899 005
This leaflet was prepared 10 June 2022