sotalol hydrochloride 80 mg
CONSUMER MEDICINE INFORMATION
What is in this leaflet
This leaflet answers some common questions about CARDOL.
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
CARDOL 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 want to read it again.
What CARDOL is used for
The name of your medicine is CARDOL. It contains the active ingredient sotalol hydrochloride.
CARDOL is used for the prevention and treatment of supraventricular and ventricular
arrhythmias (irregular heartbeats).
Ask your doctor if you have any questions about why CARDOL was prescribed for you.
Your doctor may have prescribed it for another reason.
How CARDOL works
CARDOL belongs to a group of medicines called beta-blockers.
It works by changing the body's response to some nerve impulses, especially in the
It decreases the heart's need for blood and oxygen and therefore reduces the amount
of work the heart has to do. As a result, it helps the heart to beat more regularly.
This medicine is not addictive.
CARDOL is available only with a doctor's prescription.
Before you take CARDOL
When you must not take it
Do not take CARDOL if you have an allergy to:
medicines containing sotalol hydrochloride (e.g. Sotacor)
any of the inactive ingredients mentioned at the end of this leaflet under Product
Some of the symptoms of an allergic reaction may include:
skin rash, itching or hives
swelling of the face, lips or tongue or any part of the body
difficulty in swallowing or breathing; wheezing or shortness of breath.
Do not take CARDOL if:
you are pregnant or breastfeeding, or if you intend to breast feed
you have a condition that causes narrowing of the airways, ie bronchial asthma or
chronic obstructive airway disease
you have allergic disorders (including hay fever) which may suggest a predisposition
to narrowing of the airways
you take any other medicines your doctor does not know about, particularly if they
are to control high blood pressure, heart conditions, depression, hayfever, allergies,
infections or diabetes
you have a particular type of high blood pressure that results in changes to your
heart (ask your doctor if unsure)
you have any problems with your heart or circulation, discuss them with your doctor
you have significant enlargement of the heart
you have a slow heart beat (less than 45 to 50 beats/minute)
you have abnormal electrical impulses in the heart unless a functioning pacemaker
you have shock, including cardiogenic shock (due to very low blood pressure caused
by a heart problem) and hypovolaemic shock (due to low blood volume)
you have uncontrolled heart failure
you have kidney problems
you have thyroid problems
any problems with the amount of magnesium in your blood
it is past its expiry date or the packaging appears to have been tampered with, or
if the tablets do not look right.
Talk to you doctor if you are unsure whether you should start taking this medicine.
Before you start to take it
Tell your doctor if you have allergies to:
any other medicines, especially if they are in the same drug class as sotalol
any other substances, including foods, preservatives or dyes.
In particular remind your doctor if you have asthma, bronchitis or any allergies such
as hay fever, food allergies or are allergic to bee or wasp stings.
Tell your doctor if you are pregnant or plan to become pregnant or are breastfeeding.
Tell your doctor if you have ever had trouble with the levels of salts like potassium
or magnesium in your blood.
Remind your doctor if you are going to have surgery involving a general anaesthetic
even if it is only minor.
Tell your doctor if you have been given CARDOL (or any other beta-blocker) before
and if you had any problems.
Your doctor can discuss with you the risks and benefits involved.
Tell your doctor if you have or have had any of the following medical conditions:
thyroid disease such as an overactive thyroid gland
a recent heart attack
any other heart problems
phaeochromocytoma (a rare tumour of the adrenal gland)
hardening of the arteries (cold fingers and toes or pain in the back of your legs
when you walk)
history of irregular or slow pulse.
Sotalol contains lactose.
If you have been told by your doctor that you have an intolerance to some sugars,
tell your doctor before taking it.
Taking other medicines
Tell your doctor if you are taking any other medicine, including any that you get
without a prescription from your pharmacy, supermarket or health food shop.
Some medicines and CARDOL may interfere with each other. These include:
medicines which lower blood pressure (including other beta-blockers), calcium channel
blockers (ie verapamil, nifedipine)
medicines used to treat angina or other heart conditions
other antiarrhythmic drugs (medicines to treat irregular heart rhythm or beat) such
as disopyramide, quinidine, tocainide, mexiletine
floctafenine (medicine used for the short-term treatment of mild to moderate pain)
medicines for the treatment of certain infections (e.g. erythromycin IV, amphotericin
B, pentamidine, halofantrine)
some medicine used during surgery or emergency situations, such as anaesthetics
lidocaine (lignocaine), flecainide, propafenone (not available in Australia), amiodarone,
and the class IV antiarrhythmic agents, drugs such as reserpine and guanethidine,
all used to treat abnormal or irregular heart beat
clonidine, used to treat high blood pressure, migraine or some menopausal symptoms
some antibiotics (quinolone) to treat infections
some medicines used to treat depression
insulin and other medicines used to control diabetes
certain types of diuretics (fluid tablets)
antihistamine medicines including terfenadine and astemizole that may be used to treat
hayfever, allergies or to relieve symptoms of cold and flu
medicines used to control or prevent asthma (inhalers or tablets), to control allergies
or used for other lung problems
digoxin, a medicine used for heart failure
neuromuscular blocking agents like tubocarine.
These medicines may be affected by CARDOL or may affect how well it works. You may
need to use different amounts of your medicine, or you may need to take different
If you are not sure whether you are taking any of these medicines, check with your
doctor of pharmacist.
Your doctor and pharmacist have more information on medicines to be careful with or
avoid while taking this medicine.
How to take CARDOL
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, ask your doctor or pharmacist for help.
How much to take
Your doctor will decide on the dose of CARDOL tablets for you and may need to change
the dose a few times to get the best level for you.
The recommended initial oral dosing schedule is 160mg daily, given in two divided
doses at approximately twelve-hour intervals (80mg twice a day). This dose may be
increased, if necessary, after appropriate evaluation, to 240 or 320mg/day.
In most patients, a therapeutic response is obtained at a total daily dose of 160
to 320mg/day, given in two divided doses.
The dosage is usually reduced in patients with kidney problems.
How to take it
CARDOL tablets should be taken with water, preferably one to two hours before meals.
Do not take CARDOL with milk or meals.
If you need to break CARDOL 80mg tablets into two halves, place on a flat surface
and press down on the scored side with the forefinger.
You should not drink alcohol while you are on Sotalol.
How long to take it for
If you have been prescribed CARDOL you must be sure to follow your doctor's instructions
If you forget to take it
Take your dose as soon as you remember and continue to take it as you would normally.
If it is almost time for your next dose, skip the dose you missed and take your next
dose when you are meant to.
Do not take a double dose to make up for the dose 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 when to take your medicine, ask your pharmacist for
If you take too much (overdose)
Immediately telephone your doctor, or the Poisons Information Centre (telephone 13
11 26) or go to Accident and Emergency at you nearest hospital, if you think you or
anyone else has taken too much CARDOL. Do this even if there are no signs of discomfort
You may need urgent medical attention.
If you take too much you may feel dizzy or lightheaded and may faint. You may also
have a fast and irregular heart beat or a very slow heart beat.
Serious heart problems may develop and this could be fatal.
While you are taking CARDOL
Things you must do
Always follow your doctor's instructions carefully.
Tell your doctor if you become pregnant while taking CARDOL.
You doctor can discuss with the risks of taking it while you are pregnant.
If you are about to start taking a new medicine, tell your doctor and pharmacist that
you are taking CARDOL.
You should also tell your doctor or dentist that you are being treated with a beta-blocker
should you have to have an operation.
If you have a severe allergic reaction to food, medicines or insect stings, tell your
doctor immediately. There is a chance that CARDOL may cause allergic reactions to
be worse and harder to treat.
If you are being treated for diabetes, make sure you check your blood sugar level
regularly and report any changes to your doctor.
If you have severe or prolonged vomiting or diarrhoea while taking CARDOL, tell your
doctor. These problems may cause your body to lose excess fluid and salts, which in
turn may affect your heartbeat.
If you need to have a urine test, tell your doctor that you are taking CARDOL. CARDOL
may affect the results of some laboratory tests.
Things you must not do
Do not stop taking CARDOL without your doctor's permission.
The dose needs to be reduced gradually over 7 to 14 days.
Your doctor may wish to gradually reduce the amount of CARDOL you are taking before
stopping completely. This may help reduce the chance of your condition worsening or
other heart complications occurring.
Do not let yourself run out of tablets over weekends or on holidays.
Do not use CARDOL to treat any other complaint unless your doctor says so.
Do not give this medication to anyone else, even if their symptoms seem similar to
Things to be careful of
Be careful driving or operating machinery until you know how CARDOL affects you.
This medicine may cause dizziness or light-headedness or drowsiness in some people.
If this occurs, do not drive or operate machinery or undertake any other activity
that could be dangerous.
It is best to get up slowly from a sitting or lying position if you are feeling dizzy
Tell your doctor or pharmacist as soon as possible if you do not feel well while you
are taking CARDOL.
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 side effects.
Rarely, serious heart problems can develop while you are taking normal doses but you
must remember that you are taking this medicine because your heart already has a serious
problem. It is very important that your doctor keeps a check on your progress.
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 if you notice any of the following and they worry you:
dizziness, lightheadedness or fainting, especially when you get up from a sitting
or lying position. Getting up slowly may help.
tiredness, lack of energy, weakness
nausea (feeling sick), vomiting, stomach upset, diarrhoea, flatulence, heartburn,
sleep disturbances, unusual dreams
depression, mood changes, anxiety
visual disturbances (including eye irritation, deterioration of eyesight, blurred
vision, increased sensitivity to sunlight)
tingling feelings (ie pins and needles) or numbness in the hands or feet, cold limbs
problems with sexual function
worsening of psoriasis
If any of the following happen, stop taking CARDOL, and 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
very slow heart beat
fast, irregular heart beat, palpitations
chest tightness, wheezing, shortness of breath
any type of skin rash, itching
shortness of breath (sometimes with tiredness, weakness and reduced ability to exercise),
which may occur together with swelling of the feet or legs due to fluid build up
The above list includes very serious side effects. You may need urgent medical attention
or hospitalisation. These side effects are rare.
Tell your doctor or pharmacist if you notice anything else that is making you feel
unwell while you are taking, or soon after you have finished taking CARDOL, even if
it is not on this list.
Other side effects not listed above may also occur in some people and there may be
some side effects not yet known.
After taking CARDOL
Keep medicine in the original container.
If you take it out of its original container it may not keep well.
Keep your medicine in a cool dry place where the temperature stays below 25°C.
Do not store CARDOL 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
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
CARDOL 80mg tablet: White, round tablets, scored on one side, convex with "SOT" embossed
on the other.
They are available in blister packs of 60 tablets.
CARDOL 80mg tablet contains 80mg of sotalol hydrochloride
sodium starch glycollate
colloidal anhydrous silica
CARDOL contains sugars as lactose.
CARDOL is supplied in Australia by:
Sandoz Pty Ltd
100 Pacific Highway
North Sydney, NSW 2060
Tel 1800 726 369
This leaflet was prepared in February 2024
Australian registration numbers:
CARDOL 80mg tablets: AUST R 262936
® Registered Trade Mark. The trade marks mentioned in this material are the property
of their respective owners.