APO-Duloxetine (duloxetine) Drug / Medicine Information
Contains the active ingredient duloxetine (as duloxetine hydrochloride)
Consumer Medicine Information
What is in this leaflet
This leaflet answers some common questions about this medicine. It does not contain
all the available information. It does not take the place of talking to your doctor
All medicines have risks and benefits. Your doctor has weighed the risks of you taking
this medicine 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 the medicine.
You may need to read it again.
What this medicine is used for
Duloxetine is used to treat:
major depressive disorder (MDD)
generalised anxiety disorder (GAD) – excessive worry
Duloxetine belongs to a group of medicines called serotonin and noradrenaline reuptake
inhibitors (SNRIs). SNRIs are believed to work by their action on serotonin and noradrenaline
in the brain. Serotonin and noradrenaline are the chemical messengers responsible
for controlling the psychological and painful symptoms of depression.
Ask your doctor if you have any questions about why this medicine has been prescribed
Your doctor may have prescribed this medicine for another reason.
This medicine is available only with a doctor’s prescription.
This medicine should not be used in children and adolescents under the age of 18 years.
Before you take this medicine
When you must not take it
Do not take this medicine if you have an allergy to:
any medicine containing duloxetine
any of the ingredients listed at the end of this leaflet
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 if you have or have had liver disease.
Do not take this medicine if you are taking any medicine called a monoamine oxidase
inhibitor (MAOI) (including moclobemide which is a reversible MAOI (RIMA)) or have
been taking a MAOI within the last 14 days.
If you take duloxetine while you are taking a MAOI, you may experience shaking (tremor),
shivering, muscle stiffness, fever, rapid pulse, rapid breathing or confusion.
Do not take this medicine if you are taking a medicine that is a potent inhibitor
of CYP1A2, such as fluvoxamine or ciprofloxacin.
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:
glaucoma (an eye disease where the fluid pressure in the eye may be high)
high blood pressure
history of fits (seizures)
you, or members of your family, have experienced bipolar disorder, depression or suicide
Tell your doctor if you are pregnant or plan to become pregnant or are breastfeeding.
Do not take this medicine whilst pregnant until you and your doctor have discussed
the risks and benefits involved.
If duloxetine is taken during pregnancy, you should be careful, particularly at the
end of pregnancy. Transitory withdrawal symptoms have been reported rarely in the
newborn after maternal use in the last 3 months of pregnancy.
Tell your doctor if you are breastfeeding or plan to breastfeed.
Do not take this medicine whilst breastfeeding until you and your doctor have discussed
the risks and benefits involved.
Duloxetine passes into breast milk and there is a possibility that your baby may be
Tell your doctor if you drink alcohol.
People who drink excessive amounts of alcohol should not take duloxetine. Drinking
too much alcohol could increase the risk of liver problems during treatment with duloxetine.
If you have not told your doctor about any of the above, tell them before you start
taking this medicine.
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 duloxetine may interfere with each other. These include:
monoamine oxidase inhibitors (MAOIs), medicines used to treat some types of depression.
You must stop taking MAOIs at least two weeks before starting duloxetine.
You must stop taking duloxetine at least 5 days before you start taking a MAOI
other medicines used to treat depression, panic disorder, anxiety or obsessive illnesses,
strong painkillers such as tramadol or pethidine
a type of migraine treatment called ‘triptans’, such as sumatriptan or zolmitriptan
medicines used to treat stress urinary incontinence such as tolterodine
medicines used to treat heart problems such as flecainide or propafenone
thioridazine, used to treat schizophrenia
herbal medicines such as St John’s Wort (Hypericum perforatum)
warfarin, used to thin the blood (anticoagulant) or other medicines known to affect
blood coagulation (NSAIDs or aspirin)
These medicines may be affected by duloxetine 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 and pharmacist have more information on medicines to be careful with or
avoid while taking this medicine.
How to take this medicine
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 directions, ask your doctor or pharmacist for help.
How much to take
Your doctor will tell you how much of this medicine you should take.
This will depend on your condition and whether you are taking any other medicines.
For major depressive disorder
The recommended dose is usually one 60mg capsule once daily.
For generalised anxiety disorder
The recommended dose is 30mg to 120mg, taken once daily.
You may be started on a lower dose to help reduce side effects. If you have severe
kidney disease, the recommended starting dose is one 30mg capsule once daily.
How to take it
Swallow the capsule whole with a full glass of water.
Do not open the capsules and crush the pellets inside because the medicine may not
work as well.
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 it.
It does not matter if you take this medicine before or after food.
How long to take it for
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.
The length of treatment with duloxetine will depend on how quickly your symptoms improve.
Most medicines of this type take time to work so don’t be discouraged if you do not
feel better right away. Although you may notice an improvement, continue taking your
medicine for as long as your doctor tells you.
Make sure you have enough to last over weekends and holidays.
If you forget to take it
If it is almost time to take 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 Poisons Information Centre (telephone 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 of this medicine. Do this even
if there are no signs of discomfort or poisoning.
You may need urgent medical attention.
Symptoms of an overdose may include drowsiness, convulsions and vomiting. They may
also include feeling confused, feeling restless, sweating, shaking, shivering, hallucinations,
muscle jerks, or fast heartbeat.
While you are taking this medicine
Things you must do
If you are about to be started on any new medicine, remind your doctor and pharmacist
that you are taking this medicine.
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 or start to breastfeed while taking this medicine, tell your
If you are about to have any blood tests, tell your doctor that you are taking this
It may interfere with the results of some tests.
Keep all your doctor’s appointments so that your progress can be checked.
Your doctor may do some tests from time to time to make sure the medicine is working
and to prevent unwanted side effects.
Tell your doctor immediately if you have any suicidal thoughts or other mental/mood
Occasionally, the symptoms of depression or other psychiatric conditions may include
thoughts of harming yourself or committing suicide. These symptoms may continue or
get worse during the first one or two months of treatment, until the full antidepressant
effect of the medicine becomes apparent. This is more likely to occur in young adults
under 25 years of age.
All mention of suicide or violence must be taken seriously. Contact your doctor or
a mental health professional right away or go to the nearest hospital for treatment
if you or someone you know is showing any of the following warning signs of suicide:
worsening of your depression
thoughts or talk of death or suicide
thoughts or talk of self-harm or harm to others
any recent attempts of self-harm
increase in aggressive behaviour, irritability or any other unusual changes in behaviour
If you notice any of the following, contact your doctor immediately:
yellowing of the skin or eyes
tenderness over the liver
symptoms of the ‘flu’
These could be signs of liver damage. Your doctor may do some blood tests to check
your liver or tell you to stop taking your medicine.
Things you must not do
Do not take this medicine 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 your medicine or lower the dosage without checking with your doctor.
If you stop taking it suddenly, your condition may worsen, or you may have unwanted
side effects. If possible, your doctor will gradually reduce the amount you take each
day before stopping the medicine completely.
Things to be careful of
Be careful when driving or operating machinery until you know how this medicine affects
Duloxetine may cause dizziness of drowsiness in some people. If you have any of these
symptoms, do not drive, operate machinery or do anything else that could be dangerous.
Be careful when drinking alcohol while you are taking this medicine.
You should avoid ‘binge drinking’ or drinking excessively during treatment with duloxetine
as it can cause severe liver injury.
Drinking alcohol with duloxetine may also cause dizziness or drowsiness in some people.
If you have any of these symptoms, 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 this medicine.
All medicines can have side effects. Sometimes they are serious but most of the time
they are not.
If you are over 65 years of age you may have an increased chance of getting 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:
dry mouth, mouth ulcers, thirst or bad taste
burping or belching, indigestion, stomach pain, nausea, vomiting
constipation, diarrhoea or wind (flatulence)
loss of appetite or weight loss
feeling tired or having no energy
feeling anxious, agitated or restless
confusion and attention problems
tingling and numbness of hands, face, mouth and feet
yawning or throat tightness
pain in testicles
difficulty urinating (passing water), urinating frequently or needing to urinate at
irregular heart beat
hot and cold sweats
tendency to bruise
sore ears or sore throat
ringing in ears
muscle pain, stiffness or twitching
The above list includes the more common side effects. Mostly, these are mild.
Tell your doctor as soon as possible if you notice any of the following:
signs of a possible liver problem
such as nausea, vomiting, loss of appetite, itchy skin, dark urine, yellowing of the
skin or eyes, tenderness over the liver or symptoms of the ‘flu’
high pressure in the eye (glaucoma)
feeling tired, weak or confused and having aching, stiff or uncoordinated muscles.
This may be because you have low sodium levels in the blood (hyponatraemia or syndrome
of inappropriate antidiuretic hormone)
This may because you have increased bleeding, possibly in the gastric tract (gastrointestinal
bleeding). You may also feel weakness, dizziness and experience nausea and/or vomiting
seeing or hearing things (hallucinations)
dizziness or fainting when you stand up, especially from a lying or sitting position
if you have some or all of the following symptoms you may have something called serotonin
syndrome: feeling confused, feeling restless, sweating, shaking, shivering, hallucinations,
sudden jerks in your muscles or a fast heart beat
stiff neck or jaw muscles (lockjaw)
fits or seizures
mood of excitement, over-activity and uninhibited behaviour
aggression or anger especially after starting or stopping taking this medicine
The above list includes serious side effects. You may need medical attention. Most
of these side effects are rare.
Some of these side effects can only be found when your doctor does tests from time
to time to check your progress. These include:
increased blood pressure
heart rhythm changes
underactive thyroid gland
liver function changes
If any of the following happen, tell your doctor immediately or go to Accident and
Emergency at your nearest hospital:
symptoms of an allergic reaction including cough, shortness of breath, wheezing or
difficulty breathing; swelling of the face, lips, tongue, throat or other parts of
the body; rash, itching or hives on the skin
The above list includes very serious side effects. You may need urgent medical attention
or hospitalisation. These side effects are very rare.
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.
Storage and disposal
Keep your medicine in its original packaging until it is time to take it.
If you take your medicine out of its original packaging it may not keep well.
Keep your medicine in a cool dry place where the temperature will stay below 25°C.
Do not store your medicine, 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 this medicine 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 APO-Duloxetine looks like
30 mg capsules
Hard gelatin capsules with white opaque body and blue opaque cap, imprinted “157”
on the body and “A” on the cap in green ink. Filled with white to off-white granules.
AUST R 217985.
60 mg capsules
Hard gelatin capsules with green opaque body and blue opaque cap, imprinted “158”
on the body and “A” on the cap in white ink. Filled with white to off-white granules.
AUST R 217986.
Available in blister packs of 28 capsules.
* Not all strengths may be available.
Each capsule contains 30 mg or 60 mg of duloxetine (as hydrochloride) as the active
It also contains the following inactive ingredients:
Sugar Spheres (ARTG ID 2535)
brilliant blue FCF
iron oxide yellow (60 mg capsule only)
Tekprint SB-4020 Green Ink (ARTG ID 2652; 30 mg capsule only)
TekPrint SW-0012 White Ink (ARTG ID 13175; 60 mg capsule only).
This medicine is gluten-free, lactose-free, tartrazine-free and free of other azo
Apotex Pty Ltd
16 Giffnock Avenue
Macquarie Park NSW 2113
Tel: (02) 8877 8333
APO is a registered trade mark of Apotex Inc.
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