Consumer Medicine Information
What is in this leaflet
This leaflet answers some common questions about Trental 400.
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
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 Trental 400 is used for
Trental 400 is a type of medicine used to improve the circulation of the blood.
Trental 400 is used to treat the symptoms of a condition called chronic occlusive
arterial disease. Symptoms of this disease can include lameness and pain, usually
in the leg muscles.
Trental 400 is a slow release tablet, which means that the active ingredient is released
slowly over several hours.
Your doctor, however, may prescribe Trental 400 for another purpose.
Ask your doctor if you have any questions about why it has been prescribed for you.
This medicine is only available with a doctor's prescription.
Before you take it
When you must not take it
Do not take Trental 400 if you have:
had a recent operation
heart problems, such as having suffered a heart attack
kidney or liver problems
stomach ulcers or a history of stomach ulcers
had an allergic reaction to caffeine or theophylline (a medicine used to treat asthma)
Do not take Trental 400 if you are allergic to it or any of the ingredients listed
at the end of this leaflet.
Some symptoms of an allergic reaction include skin rash, itching, shortness of breath
or swelling of the face, lips or tongue, which may cause difficulty in swallowing
Do not give Trental 400 to a child or adolescent.
There is no experience with its use in children or adolescents under 18 years old.
Do not take it if you are pregnant or intend to become pregnant.
It may affect your developing baby if you take it during pregnancy. Your doctor or
pharmacist will discuss the risks and benefits of taking it if you are pregnant.
Do not take it if you are breastfeeding or planning to breastfeed.
Do not take it after the expiry date (EXP) printed on the pack.
If you take it after the expiry date has passed, it may not work as well.
Do not take it if the packaging is damaged or shows signs of tampering.
Before you start to take it
Tell your doctor or pharmacist if you have allergies to:
any of the ingredients listed at the end of this leaflet
any other medicines including caffeine or theophylline (a medicine used to treat asthma)
any other substances, such as foods, preservatives or dyes.
Tell your doctor or pharmacist if you are pregnant or intend to become pregnant.
Like most medicines of this kind, Trental 400 is not recommended to be used during
pregnancy. Your doctor or pharmacist will discuss the risks and benefits of taking
it if you are pregnant.
Tell your doctor or pharmacist if you are breastfeeding or planning to breastfeed.
Trental 400 passes into breast milk and there is a possibility your baby may be affected.
Your doctor will discuss the risks and benefits of taking it if you are breastfeeding
or planning to breastfeed.
Tell your doctor if you have or have had any medical conditions, especially the following:
kidney or liver problems
problems with your blood pressure
problems with your heart eg. an irregular or rapid heart beat
Tell your doctor or pharmacist if you plan to have surgery.
If you have not told your doctor or pharmacist about any of the above, tell them before
you take Trental 400.
Taking other medicines
Tell your doctor or pharmacist if you are taking any other medicines, including any
that you buy without a prescription from your pharmacy, supermarket or health food
Some medicines may interfere with how Trental 400 works. These include:
warfarin and other medicines used to stop blood clots.
medicines used to treat high blood pressure
theophylline, a medicine used to treat asthma
some medicines used to treat diabetes
some medicines used to treat the symptoms of cough and colds
cimetidine, a medicine used to treat reflux and ulcers
These medicines may be affected by Trental 400, or may affect how well it works. You
may need to use different amounts of your medicine, or take different medicines. Your
doctor or pharmacist will advise you.
Your doctor or pharmacist has more information on medicines to be careful with or
to avoid while taking Trental 400.
How to take it
How much to take
Your doctor or pharmacist will tell you how many tablets you will need to take each
day. This depends on your condition and whether or not you are taking any other medicines.
The standard dose for this medicine is one tablet three times a day.
Your doctor may have prescribed a different dose.
Ask your doctor or pharmacist if you are unsure of the correct dose for you.
They will tell you exactly how much to take.
Follow the instructions they give you.
If you take the wrong dose, Trental 400 may not work as well and your problem may
How to take it
Swallow the tablet whole with a full glass of water or other liquid.
Do not crush or chew the tablets.
Each Trental 400 tablet has been especially designed to slowly release the right dose
of medicine. If you crush, chew or divide Trental 400 tablets they will not work properly.
When to take it
Take Trental 400 during or immediately after a meal.
If you take it on an empty stomach, it may cause stomach upset.
Take Trental 400 at about the same time each day.
Taking your tablets at the same time each day will have the best effect. It will also
help you remember when to take the tablets.
If you are not sure when to take it, ask your doctor or pharmacist.
How long to take it
Continue taking your medicine for as long as your doctor or pharmacist tells you.
The medicine helps control your condition, but it does not cure it. Therefore, you
must take it every day.
Trental 400 can take time to work. Your symptoms may improve within 2-4 weeks, however
it can take up to 8 weeks to take effect.
Ask your doctor or pharmacist if you are not sure how long to take the medicine for.
If you forget to take it
Do not try to make up for missed doses by taking more than one dose at a time.
This may increase the chance of getting an unwanted side effect.
If it is almost time for your next dose, skip the dose you missed and take the next
dose when you are meant to.
Do not take a double dose to make up for the dose you have missed.
If there is still a long time to go before your next dose, take it as soon as you
remember, and then go back to taking it as you would normally.
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 Australia
13 11 26 or New Zealand 0800 POISON or 0800 764766), or go to Accident and Emergency
at your nearest hospital, if you think you or anyone else may have taken too much
Do this even if there are no signs of discomfort or poisoning.
You may need urgent medical attention.
If you take too much Trental 400, you may feel flushed, light-headed or dizzy, drowsy
or you may also feel faint.
While you are taking it
Things you must do
Tell all the doctors, dentists and pharmacists who are treating you that you are taking
If you are about to be started on any new medicine, tell your doctor and pharmacist
that you are taking Trental 400.
If you plan to have surgery that needs a general anaesthetic, tell your doctor or
dentist that you are taking this medicine.
If you become pregnant while you are taking this medicine, stop taking it and tell
your doctor or pharmacist immediately.
Things you must not do
Do not take more than the recommended dose unless your doctor tells you to.
Do not give this medicine to anyone else, even if they have the same condition as
Do not use this medicine to treat any other complaints unless your doctor tells you
Do not stop taking Trental 400, or lower the dosage, without checking with your doctor.
Do not stop taking your tablets because you are feeling better, unless advised by
your doctor or pharmacist.
Things to be careful of
Be careful driving or operating machinery until you know how Trental 400 affects you.
It may cause dizziness or light-headedness in some people, especially after the first
dose. 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 dizzy.
All medicines have some unwanted side effects. Sometimes they are serious, but most
of the time they are not.
Tell your doctor or pharmacist as soon as possible if you do not feel well while you
are taking Trental 400.
It helps most people, but it may have unwanted side effects in a few people.
Tell your doctor or pharmacist if you notice any of the following and they worry you:
nausea, vomiting or an upset stomach
diarrhoea or constipation
irregular heart beat
These are mild side effects of this medicine and usually short-lived.
Tell your doctor or pharmacist immediately if you notice any of the following:
bleeding or bruising more easily than normal
yellowing of the skin and eyes (jaundice)
These may be serious side effects of Trental 400. You may need urgent medical attention.
Serious side effects are uncommon.
If any of the following happen, stop taking this medicine 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
These are very serious side effects. If you have them, you may have had a serious
allergic reaction to Trental 400. You may need urgent medical attention or hospitalisation.
These side effects are very rare.
Tell your doctor or pharmacist if you notice anything else that is making you feel
Other side effects not listed above may occur in some consumers.
Do not be alarmed by this list of possible side effects.
You may not experience any of them.
Ask your doctor or pharmacist to answer any questions you may have.
After taking it
If you have any queries about any aspect of your medicine, or any questions regarding
the information in this leaflet, discuss them with your doctor or pharmacist.
Keep your tablets in the blister pack until it is time to take them.
If you take the tablets out of the box or the blister pack they may not keep well.
Keep the medicine in a cool, dry place where the temperature stays below 25°C.
Do not store it or any other medicine in the bathroom, near a sink, or on a windowsill.
Do not leave it in the car.
Heat and damp 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 or pharmacist tells you to stop taking Trental 400, or the medicine
has passed its expiry date, ask your pharmacist what to do with any that are left
Return any unused medicine to your pharmacist.
What it looks like
Trental 400 - oblong, pink, film-coated tablets with 'ATA' on one side.
Trental 400 is available in boxes of 50 tablets.
Trental 400 - 400 mg pentoxifylline (oxpentifylline) per tablet
Trental does not contain gluten, sucrose, lactose, tartrazine or any other azo dyes.
Trental 400 is supplied in Australia by:
sanofi-aventis australia pty ltd
12-24 Talavera Road
Macquarie Park NSW 2113
Freecall No: 1800 818 806
Trental 400 is supplied in New Zealand by:
sanofi -aventis new zealand limited
Level 8, 56 Cawley Street
Ellerslie, Auckland 1051
Freecall No: 0800 283 684
This leaflet was prepared in April 2020.
Australian Register Number(s)
AUST R 81197