Skip to Content


Active substance(s): PENTOXIFYLLINE

View full screen / Print PDF » Download PDF ⇩
Trental® 400 mg Tablets

Your medicine is available using the above name but it will be referred as
Trental throughout the leaflet
Patient Information Leaflet
Read all of this leaflet carefully before you start taking this
- Keep this leaflet. You may need to read it again.
- If you have any further questions, ask your doctor or pharmacist.
- This medicine has been prescribed for you. Do not pass it on to
others. It may harm them, even if their symptoms are the same as
- If any of the side effects gets serious, or if you notice any side effects
not listed in this leaflet, please tell your doctor or pharmacist.

In this leaflet:
1. What Trental is and what it is used for
2. Before you take Trental
3. How to take Trental
4. Possible side effects
5. How to store Trental
6. Further information

Take special care with Trental
Check with your doctor or pharmacist before taking your medicine if:
 You feel dizzy, light-headed or faint when you stand or sit up too quickly
 You have problems with the blood supply to your heart caused by
hardening or narrowing of the arteries
 You have liver or kidney problems
If you are not sure if any of the above apply to you, talk to your doctor or
pharmacist before taking Trental.
Taking other medicines
Please tell your doctor or pharmacist if you are taking or have recently
taken any other medicines.
This includes medicines you buy without a prescription, including herbal
medicines. This is because Trental can affect the way some other
medicines work. Also some medicines can affect the way Trental works.
In particular, tell your doctor if you are taking any of the following:
Trental may increase the effect of the following medicines:
• Medicines for diabetes including tablets or insulin
• Medicines for high blood pressure
• Anticoagulants such as warfarin

Trental contains a medicine called pentoxifylline. This belongs to a group
of medicines called peripheral vasodilators. It works by increasing the
blood flow to the arms and legs.

When taken with Trental, the following medicines increase the
chance of you getting side effects:
• Ketorolac used for pain relief
• Theophylline used to treat wheezing or difficulty in breathing
• Ciprofloxacin used to treat bacterial infections

Trental can be used to treat:
• Peripheral vascular disease (poor circulation to the arms and legs).
• Intermittent claudication (pain on walking or at rest caused by poor
circulation to the legs).

Taking Trental with food and drink
Take Trental with or just after meals.

1. What Trental is and what it is used for

2. Before you take Trental
Do not take Trental if:
 You are allergic (hypersensitive) to pentoxifylline, other similar
medicines such as theophylline or aminophylline or to any of the other
ingredients of Trental (see Section 6: Further Information)
 Signs of an allergic reaction include: a rash, swallowing or breathing
problems, swelling of your lips, face, throat or tongue
 You have heart problems or have recently had a heart attack
 You have severe palpitations (very fast and uneven heartbeats)
 You have had a stroke with bleeding in the brain (cerebral
 You have had bleeding in the eye (retinal haemorrhage)
Do not take this medicine if any of the above apply to you. If you are not
sure, talk to your doctor or pharmacist before taking Trental.

Pregnancy and breast-feeding
You should not take Trental if you are pregnant.
Ask your doctor or pharmacist for advice before taking any medicine.
If you are breast-feeding or planning to breastfeed, talk to your doctor or
pharmacist before taking Trental. This is because very small amounts may
pass into the mothers’ milk.
Driving and using machines
You may feel dizzy while taking this medicine. If this happens, do not drive
or use any tools or machines.

3. How to take Trental
Always take Trental exactly as your doctor has told you. You should check
with your doctor or pharmacist if you are not sure.
Taking this medicine
− If you feel the effect of your medicine is too weak or too strong, do not
change the dose yourself, but ask your doctor
− Take this medicine by mouth
− Swallow the tablets whole with a drink of water
− Take with or just after a meal

Adults including the elderly
The usual starting dose is 1 tablet (400mg) three times a day. Your doctor
may lower your dose to 1 tablet twice a day.
Patients with kidney problems
Your doctor may give you a lower dose if necessary.
Trental is not suitable for use in children.
If you take more Trental than you should
If you take more tablets than you should, talk to a doctor or go to a hospital
straight away. The following effects may happen: low blood pressure,
feeling sleepy, fits (seizures) or uneven heartbeat.

• An illness where the removal of bile from the liver is blocked
(intrahepatic cholestasis). Signs include jaundice, rash or fever, and the
colour of your water (urine) becomes darker
• Discomfort or bloating in the abdomen
Blood tests
Trental can change the levels of liver enzymes shown up in blood tests.
This can mean that your liver is not working properly.
Reporting of side effects
If you get any side effects, talk to your doctor, pharmacist or nurse. This
includes any possible side effects not listed in this leaflet. You can also
report side effects directly via the Yellow Card Scheme at: By reporting side effects you can help
provide more information on the safety of this medicine.

If you forget to take Trental
Do not take a double dose to make up for a forgotten tablet.

5. How to store Trental

If you stop taking Trental
Keep taking Trental until your doctor tells you to stop taking it.

Do not use after the expiry date printed on the carton label or blister strip.
The expiry date refers to the last day of that month.

If you have any further questions on the use of this product, ask your
doctor or pharmacist.

Trental 400mg tablets should not be stored above 25 °C. Store in the
original blister package.

4. Possible side effects

Medicines should not be disposed of via wastewater or household waste.
Ask your pharmacist how to dispose of medicines no longer required.
These measures will help to protect the environment.

Like all medicines, Trental can cause side effects, although not everybody
gets them.
Stop taking Trental and see your doctor or go to a hospital straight
away if;
• If you have an allergic reaction. The signs may include: a rash,
swallowing or breathing problems, swelling of your lips, face, throat or
• Bleeding under the skin
• Blood in your vomit or stools (motions)
• If you develop a condition called aseptic meningitis. Signs include
headache, neck stiffness, eye pain or discomfort in bright light
Tell your doctor as soon as possible if you have any of the following
side effects:
• You bruise more easily than usual. This could be because of a blood
disorder (thrombocytopenia).
• Increased or fast heart beat (tachycardia)
• Chest pain (angina)
• Irregular heart beat (palpitations)
Tell your doctor or pharmacist if any of the following side effects gets
serious or lasts longer than a few days. Also tell them if you notice
any side effects not listed in this leaflet:
• Feeling sick (nausea) or being sick (vomiting), diarrhoea
• Headache, feeling dizzy, light-headed or faint
• Flushing
• Feeling agitated, sleep problems

Keep out of the sight and reach of children.

6. Further Information
What Trental contains
• Each tablet contains 400 mg of pentoxifylline in a modified release
• The other ingredients are hydroxyethyl cellulose, povidone 25, talc,
magnesium stearate, hypromellose, macrogol 8000, erythrosine and
titanium dioxide.
What Trental looks like and contents of the pack
Trental are oblong shaped, pink, modified release tablets marked 'ATA' on
one side and plain on the reverse.
Trental 400mg tablets are available as blister packs of 100 tablets
PL 10383/0724

Trental 400mg Tablets


Who makes and repackages your medicine?
Your medicine is manufactured by Aventis Pharma, Frankfurt am Main,
Germany. Procured from within the EU and repackaged by the Product
Licence Holder: Primecrown Ltd, 4/5 Northolt Trading Estate, Belvue
Road, Northolt, Middlesex UB5 5QS
Leaflet date: 21.05.2015
Trental is a registered trademark of Sanofi-Aventis Deutschland GmbH,

Expand view ⇕

Source: Medicines and Healthcare Products Regulatory Agency

Disclaimer: Every effort has been made to ensure that the information provided here is accurate, up-to-date and complete, but no guarantee is made to that effect. Drug information contained herein may be time sensitive. This information has been compiled for use by healthcare practitioners and consumers in the United States. The absence of a warning for a given drug or combination thereof in no way should be construed to indicate that the drug or combination is safe, effective or appropriate for any given patient. If you have questions about the substances you are taking, check with your doctor, nurse or pharmacist.