Consumer Medicine Information
What is in this leaflet
This leaflet answers some common questions about Inspra.
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
Inspra against the benefits it is expected to 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 need to read it again.
What Inspra is used for
What Inspra does
This medicine is used to treat heart failure in patients who have experienced a heart
A heart attack occurs when one of the major blood vessels supplying blood to your
heart becomes blocked. This means that your heart cannot receive the oxygen it needs
and becomes damaged. This may lead to further problems, such as heart failure, irregular
heart rhythms and blood clots.
Heart failure means that the heart muscle is weak and cannot pump blood strongly enough
to supply all the blood needed throughout the body. Heart failure is not the same
as heart attack, and may start off with mild or no symptoms, but as the condition
progresses, patients may feel short of breath or may get tired easily after light
physical activity such as walking. Some patients may wake up short of breath at night,
or have to prop their heads up during sleep to avoid this problem. Fluid may collect
in different parts of the body, often first noticed as swollen ankles and feet.
This medicine is also used to reduce the risk of death or need for hospitalisations
due to heart failure in patients with chronic heart failure.
How Inspra works
Your body makes a substance called aldosterone. It is important for regulating blood
pressure and is one of the factors involved in heart function. Sometimes aldosterone
can cause changes in our body that lead to heart failure. Inspra works by blocking
the action of aldosterone, and slowing the progression of heart failure by reducing
Inspra belongs to a group of medicines called 'selective aldosterone blockers' that
stop the action of aldosterone.
Ask your doctor if you have any questions about why this medicine has been prescribed
Your doctor may have prescribed it for another reason.
There is no evidence that this medicine is addictive.
This medicine is available only with a doctor's prescription.
Use in children
The safety and effectiveness of Inspra in children have not been established.
Before you take Inspra
When you must not take it
Do not take Inspra if you have an allergy to:
any medicine containing eplerenone
any medicine containing any of the ingredients listed at the end of this leaflet.
Some of the symptoms of an allergic reaction may include:
shortness of breath
swelling of the face, lips or tongue
muscle pain or tenderness
Do not take Inspra if you have or have had any of the following medical conditions:
very high levels of potassium in your blood
severely reduced kidney function. Your doctor will determine your kidney function.
Severe liver problems.
Do not take Inspra if you are currently taking any of the following medicines:
potassium-sparing diuretics (e.g. spironolactone, amiloride), used to help the kidneys
get rid of salt and water by increasing the amount of urine produced
ketoconazole and itraconazole used to treat fungal infections
clarithromycin, used to treat bacterial infections
saquinavir, ritonavir, for the treatment of HIV infections.
Taking Inspra together with the above medicines can lead to serious side effects.
Do not take this medicine if you are pregnant.
It may affect your developing baby if you take it during pregnancy.
Do not breast-feed if you are taking this medicine.
The active ingredient in Inspra may pass into breast milk and there is a possibility
that your baby may be affected.
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:
high levels of potassium in your blood
long term kidney disease
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.
If you have not told your doctor about any of the above, tell them before you start
Taking other medicines
Tell your doctor or pharmacist if you are taking any other medicines, including:
all prescription medicines
all medicines you buy over the counter from a pharmacy or supermarket
all complementary and alternative therapies
anything you buy from a health food shop.
Some medicines may be affected by Inspra 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 will advise you.
Tell your doctor or pharmacist if you are taking any of the following:
medicines known as angiotensin converting enzyme (ACE) inhibitor and/or angiotensin
receptor blocker (ARB), such as quinapril, losartan. These are used to treat high
blood pressure and some other heart conditions and may increase the risk of high potassium
levels in your blood.
non-steroidal anti-inflammatory drugs (NSAIDs), medicines used to relieve pain, swelling
and other symptoms of inflammation including aspirin and ibuprofen.
lithium, a medicine used to treat mood swings
neuroleptics, used to treat certain mental illnesses
tricyclic antidepressants, used to treat certain mental illnesses
St John's Wort, used in the management of depression
carbamazepine, used to control seizures, facial pain or certain types of mood disorders
phenytoin and phenobarbitone, medicines used to control seizures
potassium-sparing diuretics, such as spironolactone, amiloride
potassium supplements, or salt substitutes which contain potassium
medicines used to treat fungal infections such as ketoconazole, itraconazole
certain antibiotics used to treat bacterial infections, such as erythromycin, trimethoprim,
saquinavir, ritonavir, for the treatment of HIV infections
immunosupressive agents such as cyclosporin, tacrolimus
baclofen, a muscle relaxant
prazosin, used to treat high blood pressure and other medical conditions
alfuzosin, for the treatment of benign prostatic hyperplasia
amifostine, used in combination with cancer treatments
any other medicines used to treat high blood pressure or heart failure.
If you are not sure if you are taking any of these medicines mentioned in this leaflet,
check with your doctor or pharmacist.
Your doctor and pharmacist have more information on medicines to be careful with or
avoid while taking this medicine.
Tell your doctor if you are taking salt tablets.
Taking Inspra together with salt tablets can lead to serious side effects.
How to take Inspra
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 box, ask your doctor or pharmacist
How much to take
Your doctor will tell you how many tablets you need to take each day. This may depend
upon your age, your kidney condition, the potassium level in your blood, and whether
or not you are taking any other medicines.
The usual starting dose of Inspra is 25 mg taken once a day. After about 4 weeks,
your doctor may increase the dose to 50 mg once a day.
Your doctor will do blood tests to help determine the correct dose of Inspra for you.
How to take it
Swallow the tablets whole with a full glass of water.
When to take it
Take your medicine 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 the tablets.
Your tablets may be taken with or after a meal, or on an empty stomach.
How long to take it
Continue taking your medicine for as long as your doctor tells you.
This medicine helps to control your condition, but does not cure it. It is important
to keep taking your medicine even if you feel well.
If you forget to take it
If it is less than 12 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 your medicine
as you would normally.
Do not take a double dose to make up for the dose 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 Australian Poisons Information Centre (telephone
13 11 26) or go to Accident and Emergency at the nearest hospital, if you think that
you or anyone else may have taken too much Inspra. Do this even if there are no signs
of discomfort or poisoning.
You may need urgent medical attention.
If you take too much Inspra, you may feel light-headed.
While you are taking Inspra
Things you must do
Keep all of your doctor's appointments so that your progress can be checked.
Your doctor may occasionally do a blood test to check your potassium levels and see
how your kidneys are working. Your dose of Inspra may be adjusted by your doctor,
depending on the potassium levels in your blood.
If you are about to be started on any new medicine, remind your doctor and pharmacist
that you are taking Inspra.
Tell any other doctors, dentists, and pharmacists who treat you that you are taking
If you are going to have surgery, tell the surgeon or anaesthetist that you are taking
It may affect other medicines used during surgery.
If you become pregnant while taking this medicine, tell your doctor that you are taking
Make sure you drink enough water during exercise and hot weather when you are taking
this medicine, especially if you sweat a lot.
If you do not drink enough water while taking Inspra, you may feel faint, light-headed
or sick. This is because your blood pressure is dropping suddenly. If you continue
to feel unwell, tell your doctor.
If you have excess vomiting or diarrhoea while taking Inspra, tell your doctor.
You may lose too much water and salt and your blood pressure may drop too much.
If you feel light-headed or dizzy after taking your first dose of Inspra, or when
your dose is increased, tell your doctor immediately.
Things you must not do
Do not take Inspra to treat 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
Do not stop taking your medicine, or lower the dosage, without checking with your
If you stop taking it suddenly, your condition may worsen or you may have unwanted
Things to be careful of
Be careful driving or operating machinery until you know how Inspra affects you.
This medicine may cause dizziness and feeling faint in some people. If you have this
symptom, do not drive, 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 Inspra or your condition changes. Tell your doctor even if you think the
problem is not connected with the medicine or is not listed in this leaflet.
This medicine helps most people with heart failure, but it may have unwanted side
effects in some people. 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
It is often difficult to tell whether side effects are the result of taking Inspra,
or the effects of your heart failure or side effects of other medicines you may be
taking. For this reason it is important to report any change in your condition. Your
doctor may want to change your dose or advise you to stop taking Inspra.
If you are over 65 years of age you may have an increased chance of having some side
effects, as you may be more sensitive to the effects of the medication.
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 if...
The following list includes the more common or noticeable side effects of your medicine.
Tell your doctor or pharmacist if you notice any of the following and they worry you:
feeling light-headed, dizzy or faint
stomach or bowel problems
feeling sick (nausea) or vomiting
flatulence or wind
rash, itchy skin
high temperature, signs of an infection
Tell your doctor as soon as possible if...
The following list includes side effects that may require medical attention. Serious
side effects are rare.
Tell your doctor as soon as possible if you notice any of the following:
heart flutters, increased heart rate
unusual tiredness, weakness
muscle spasms and pain
enlargement of the breasts in men
reduced sense of touch
feeling weak and generally unwell
problems with sleeping.
Go to hospital if...
Tell your doctor immediately or go to Accident and Emergency at your nearest hospital,
if you notice any of the following:
shortness of breath, swelling of the feet or legs due to fluid build up
chest pain which may spread to the neck and shoulders
swelling of the face, lips, mouth, tongue or throat which may cause difficulty in
swallowing or 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 patients.
Some of these side effects (for example, changes in potassium levels, thyroid function,
or cholesterol level) can only be found when your doctor does tests from time to time
to check your progress.
After taking Inspra
Keep your Inspra tablets in the pack until it is time to take them.
If you take the tablets out of the pack they will not keep well.
Keep your tablets in a cool dry place where the temperature stays below 25 °C.
Do not store Inspra 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
Inspra is a yellow, arc diamond, film-coated tablet.
Packs contain 30 tablets.
25 mg tablet
Marked with 'NSR' over '25' on one side and 'Pfizer' on the other.
50 mg tablet
Marked with 'NSR' over '50' on one side and 'Pfizer' on the other.
The active ingredient in Inspra is eplerenone.
Inspra 25 tablet contains 25 mg eplerenone
Inspra 50 tablet contains 50 mg eplerenone.
Inspra tablets also contain:
sodium lauryl sulfate
iron oxide yellow (CI77492)
iron oxide red (CI77491).
This medicine does not contain sucrose, gluten, or tartrazine.
Inspra is supplied in Australia by:
Pfizer Australia Pty Ltd
Sydney NSW 2000
Toll Free Number: 1800 675 229.
Australian registration numbers
25 mg AUST R 100162
50 mg AUST R 100163
This leaflet was prepared in Jan 2020.
© Pfizer Australia Pty Ltd 2014.