Consumer Medicine Information
What is in this leaflet
Please read this leaflet carefully before you are given Sintetica Baclofen Intrathecal.
This leaflet answers some common questions about Sintetica Baclofen Intrathecal. It
does not contain all the available information. The most up-to-date Consumer Medicine
Information can be downloaded from www.ebs.tga.gov.au.
Reading this leaflet 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 giving
you Sintetica Baclofen Intrathecal against the benefits this medicine is expected
to have for you.
If you have any concerns about being given this medicine, ask your doctor or pharmacist.
Keep this leaflet with the medicine.
You may want to read it again.
What Sintetica Baclofen Intrathecal is used for
Sintetica Baclofen Intrathecal is used to reduce tension in your muscles which causes
spasms. These spasms happen in various illnesses such as multiple sclerosis, cerebral
palsy and other diseases or injuries of the spinal cord or brain.
Because this medicine reduces spasms and the pain that goes with them, it helps to
make you more mobile. This helps you to manage your daily activities and makes physiotherapy
Sintetica Baclofen Intrathecal belongs to a group of medicines called muscle relaxants.
It contains the active ingredient, baclofen, in a solution for injection or infusion.
It is used when medicines taken by mouth do not work well enough or when they cause
too many side effects.
The solution in the ampoule is injected into your back (spinal canal) using a special
pump. From the pump, a constant amount of baclofen goes into the space surrounding
your spinal cord through a tiny tube.
This medicine can be used for adults and for children aged four years or older.
Your doctor may have prescribed this medicine for another reason.
Ask your doctor if you have any questions about why it has been prescribed for you.
Sintetica Baclofen Intrathecal is only available with a doctor's prescription. Sintetica
Baclofen Intrathecal is not addictive.
Before you are given Sintetica Baclofen Intrathecal
Sintetica Baclofen Intrathecal is not suitable for everyone.
When you must not be given it
You must not be given Sintetica Baclofen Intrathecal if you have epilepsy not controlled
by treatment, e.g. if you continue to have fits or convulsions despite medication.
You must not be given Sintetica Baclofen Intrathecal if you are allergic to any medicine
containing baclofen or any of the ingredients listed at the end of this leaflet.
Symptoms of an allergic reaction may include hives or an itchy skin rash, flushing
of the face, swelling of the face, lips or tongue, faintness, tight feeling in the
chest, wheezing or difficulty breathing.
Sintetica Baclofen Intrathecal must not be used after the expiry date (EXP) printed
on the pack, or if the packaging is torn or shows signs of tampering. The solution
must be clear before use.
If you are not sure whether you should be given Sintetica Baclofen Intrathecal, talk
to your doctor or pharmacist.
Before you are given it
Tell your doctor or pharmacist if you have allergies to any other medicines, foods,
preservatives or dyes.
Get urgent medical help if you observe that your implanted device is not working and
you also notice withdrawal symptoms (see "If the medicine must be stopped").
Tell your doctor if you have or have had any medical conditions, especially the following:
an infection of any kind
schizophrenia or other mental illness, especially if it makes you feel confused at
seizures due to epilepsy or any other reason
autonomic dysreflexia, an emergency condition associated with extremely high blood
pressure, intense headaches, profuse sweating, blurred vision and other symptoms
problems with blood flow to the brain
heart or lung disease
stomach ulcer now or at any time in the past
thoughts of suicide or self harm at any time. Speak to your doctor immediately or
go to the Emergency Department of the nearest hospital for help. Ask your family,
a friend or carer to monitor your behaviour and tell you if they are worried about
any changes in your behaviour. Ask them to read this leaflet.
Your doctor may need to do tests, e.g. spinal imaging, before treating you with Sintetica
Baclofen Intrathecal to check if there is any reason you should not be given it.
Tell your doctor if you are pregnant or breastfeeding.
There are no studies using Sintetica Baclofen Intrathecal in women who are pregnant
or breastfeeding. Your doctor will discuss the possible risks and benefits of you
being given Sintetica Baclofen Intrathecal during pregnancy and breastfeeding.
Tell your doctor if you are over 65 years old.
Elderly persons may be more sensitive to side effects which your doctor can manage
by changing the dose gradually.
If you have not told your doctor or pharmacist about any of the above, tell them before
you are given Sintetica Baclofen Intrathecal.
Taking other medicines
Tell your doctor if you are taking any other medicines, including any that you get
without a prescription from your pharmacy, supermarket or health food shop.
Tell any healthcare professional who is prescribing a new medicine for you that you
are using Sintetica Baclofen Intrathecal.
Some medicines and Sintetica Baclofen Intrathecal may interfere with each other. These
levodopa, carbidopa and other similar medicines known as DDC inhibitors (used to treat
general anaesthetics used to put you to sleep during surgery, such as fentanyl and
morphine or other opiates, used to control pain
some antidepressants, known as tricyclics
medicines used to treat high blood pressure
benzodiazepines, used to treat anxiety, insomnia, seizures or muscle spasms
any medicine or drug which affects the Central Nervous System (brain or spinal cord).
The above medicines may be affected by Sintetica Baclofen Intrathecal, or may affect
how well it works. You may need different amounts of Sintetica Baclofen Intrathecal
or you may need to take different medicines.
Your doctor and pharmacist have more information on medicines to be careful with or
avoid while using Sintetica Baclofen Intrathecal.
How Sintetica Baclofen Intrathecal is given
How it is given
This medicine can only be given by experienced doctors using special medical equipment.
You will need to stay in hospital, at least at the beginning of treatment.
Your doctor will inject a small amount of Sintetica Baclofen Intrathecal into your
spinal canal to see if it improves your muscle spasms.
If it does, then a special pump will be implanted under the skin of your abdomen.
The pump will give you a small amount of medicine all the time.
You will be monitored closely in a fully equipped and staffed environment after the
first injection and following pump implant. You will be assessed after each change
of dose for possible side effects or evidence of infection. The functioning of the
pump will also be checked.
You or the person caring for you will be shown how to look after the pump at home
and how to keep the skin where it has been implanted free from infection.
How much will be given
Your doctor will decide how much Sintetica Baclofen Intrathecal you will be given.
It may take several days to find the amount of medicine that suits you best. Your
doctor will keep a close watch on you during this time.
After that, your doctor will still want to see you regularly to check your progress
and make sure your pump is working well.
This dose will depend on your condition and how your body responds to the treatment.
It is usually between 276-800 micrograms a day. Children under 12 years of age usually
require lower doses than older patients.
Ask your doctor or pharmacist if you would like more information about how your dose
How often you will be given it
Your doctor will work out how often you need to return to have the pump filled with
additional Sintetica Baclofen Intrathecal before it runs out. It is important that
the pump not be allowed to run out because you can have a serious reaction if you
stop treatment suddenly.
Follow closely the instructions given to you by the hospital staff and discuss with
your doctor first before changing any of your treatment appointments.
If the medicine must be stopped
If this medicine must be stopped for any reason, your doctor will reduce the dose
gradually to avoid unwanted side effects. Suddenly stopping Sintetica Baclofen Intrathecal
or rapidly reducing the dose can cause serious side effects which in a few rare cases
have been fatal.
Do not stop Sintetica Baclofen Intrathecal suddenly or allow the pump to run out of
medicine. If it should happen, tell your doctor immediately and watch out for the
symptoms listed below.
These symptoms can lead to more severe side effects unless treated immediately.
Stopping this medicine suddenly may cause:
severe and uncontrolled muscle spasms
difficulty in muscle movements
dizziness or light-headedness due to low blood pressure
severe itching and numbness or tingling in hands and feet
persistant painful erection of the penis (priapism)
altered mental conditions, for example anxiety, agitation, confusion, hallucination,
abnormal thinking and behaviour or convulsions (seizures), persistent
painful erection of the penis (priapism) and infection (sepsis).
Problems with the pump, for example, due to battery problems, catheter problems, alarm
dysfunction or device malfunctions may also cause withdrawal symptoms.
If you have any of the above signs, tell your doctor immediately. These signs may
be followed by more serious side effects (including death) unless you are treated
While you are using Sintetica Baclofen Intrathecal
Things you must do
Follow your doctor's instructions carefully. Make sure the pump and the site where
the pump was inserted are looked after properly.
If not, the pump may not work properly or you could get a serious skin infection.
If you're not sure what to do, or if you're not sure if there's a problem, talk to
Keep all of your doctor's appointments so that your medicine can be refilled and your
progress can be checked.
It is very important that your pump is refilled before your medicine runs out as it
is not safe to stop treatment suddenly. Also, your doctor needs to check on your progress
to make sure you are on the right dose.
See your doctor if you feel that your condition is not improving or is getting worse.
Your dose may need adjusting or there might be a problem with the pump.
If any adjustments to the pump are needed, including to the pump flow rate (dose),
make sure this is supervised by a doctor.
Errors in adjusting the pump can lead to serious side effects.
If your muscle spasms come back, either suddenly or gradually, tell your doctor.
Your doctor may be able to change the dose of Sintetica Baclofen Intrathecal to make
it work better for you.
Tell your doctor immediately if you have pain in your back, shoulders, neck and buttock
See your doctor immediately if your condition is worsening and you experience unusual
itching, dizziness, light-headedness or tingling in the hands or feet.
There may be a problem with the pump that is stopping you getting your medicine. This
can be life-threatening and you may need immediate medical attention.
If you are about to be started on any new medicine, tell your doctor and pharmacist
that you are using Sintetica Baclofen Intrathecal. Likewise, tell any other doctors,
dentists and pharmacists who are treating you that you are being given this medicine.
If you are going to have surgery, tell the surgeon and anaesthetist that you are using
It may affect other medicines used during surgery.
If you become pregnant while using this medicine, tell your doctor immediately.
Things you must not do
Do not stop Baclofen Sintetica Intrathecal suddenly.
See "If the medicine must be stopped" for more information.
Do not give this medicine to anyone else, even if their symptoms seem to be the same
Things to be careful of
Be careful driving or operating machinery until you know how Sintetica Baclofen Intrathecal
It may cause sleepiness, dizziness, problems with coordination or vision, and hallucinations
in some people. Make sure you know how you react to it before you drive a car, operate
machinery, or do anything else that could be dangerous if you feel less alert. If
you drink alcohol, or take strong pain killers or barbiturates, the effects may be
Be careful drinking alcohol until you know how Sintetica Baclofen Intrathecal affects
Alcohol may have a greater effect on you if you are being treated with Sintetica Baclofen
Intrathecal. You may feel more sleepy or dizzy than usual.
Be careful on stairs and uneven surfaces to avoid falling.
Sintetica Baclofen Intrathecal works by reducing muscle tone. It may cause weakness
and affect reflexes and coordination. Talk to your doctor if you are having problems
as they may need to change your dose.
In case of overdose
If you are given too much
Immediately telephone your doctor, or the Poisons Information Centre (telephone 13
11 26), or go to Accident and Emergency at your nearest hospital, if you think that
you may have been given too much Sintetica Baclofen Intrathecal.
Do this even if there are no signs of discomfort or poisoning.
You may need urgent medical attention.
People vary in their sensitivity to Sintetica Baclofen Intrathecal. Some people may
have signs of overdose at doses that are safe for other people.
Take care particularly at the start of treatment, after a dose change or after restarting
treatment if you have had a break.
It is very important that you and those caring for you know the signs of overdose
that can happen. Symptoms of an overdose may include extreme weakness, unusual drowsiness,
light-headedness, dizziness, sleepiness, excessive saliva, nausea or vomiting. More
severe symptoms include fits, difficulty breathing, slow heartbeat, loss of consciousness,
coma and death.
Signs of overdose may happen suddenly or more slowly (for example, because the pump
is not working properly).
Tell your doctor or pharmacist as soon as possible if you do not feel well while you
are using Sintetica Baclofen Intrathecal.
Like all medicines, Sintetica Baclofen Intrathecal may occasionally cause side effects
in some people. Sometimes they are serious, most of the time they are not. You may
need medical attention if you get some of the side effects.
Some side effects could be associated with the delivery system.
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:
drowsiness, tiredness or lack of energy
dizziness or feeling light-headed
feeling sick or vomiting
loss of appetite, weight loss
numbness or tingling in the hands and feet
muscle weakness, spasms or pain or change in muscle tone
problems with coordination and balance
blurred or double vision
feeling anxious, confused, disorientated or unable to sleep
problems with concentration or memory
dry mouth, decreased sense of taste
increase in saliva
problems with sexual function
Tell your doctor immediately if you notice any of the following:
slow or difficult breathing, or chest tightness, pain or congestion
fever, chills or other signs of infection, pneumonia
swelling of the face, ankles, feet or lower legs
pain, numbness or heavy feeling in the legs
unusually slow heart beat
depression or other severe mood or mental disorders (paranoia)
difficulty in swallowing
rash or itching of skin
continuous uncontrollable eye movements
loss of bladder (urine) control or other bladder problems
severe vomiting, diarrhoea or constipation
increase in sideways curvature of the spine (a type of spinal deformity called scoliosis)
feeling of extreme happiness (euphoria)
suicidal ideas and suicide attempt
The above side effects could be serious. You may need medical attention.
Tell your doctor or pharmacist if you notice anything else that is making you feel
Other side effects not listed above may also occur in some patients.
Do not be alarmed by this list of possible side effects.
You may not experience any of them.
After being given Sintetica Baclofen Intrathecal
Sintetica Baclofen Intrathecal will be stored in the pharmacy or on the ward under
the recommended storage conditions.
It must be kept in a cool dry place, protected from light, where the temperature stays
below 25°C. Do not refrigerate or freeze.
Any Sintetica Baclofen Intrathecal which has passed its expiry date, or is left in
the container after use, will be disposed of in a safe manner by your doctor, nurse
What it looks like
Sintetica Baclofen Intrathecal is a clear, colourless solution for injection or infusion.
It is available in clear glass ampoules in the following sizes:
1 mL containing 50 microgram baclofen - 10 ampoules in each pack
5 mL containing 10 mg baclofen - 1 ampoule and 10 ampoules in each pack
20 mL containing 10 mg baclofen - 1 ampoule in each pack
20 mL containing 40 mg baclofen - 1 ampoule in each pack.
Not all presentations may be marketed.
water for injections.
Boucher & Muir Pty Ltd
Level 9, 76 Berry Street
North Sydney NSW 2060
Ph: 1800 627 680
Sintetica Baclofen Intrathecal:
50 microgram/1 mL: AUST R 271172
10 mg/20 mL: AUST R 271173
10 mg/5 mL: AUST R 271174
40 mg/20 mL: AUST R 271175
Date of preparation
This leaflet was prepared on 17 November 2020.