Skip to Content

UK Edition. Click here for US version.


Active substance(s): HEPARIN SODIUM

View full screen / Print PDF » Download PDF ⇩


Heparin sodium 100 IU/ml I.V. flush solution
heparin sodium

Please read all of this leaflet carefully before you start having this medicine.
• 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 yours.
• If any of the side effects become serious, or you notice any side effects not listed in this leaflet,
please tell your doctor or pharmacist.
• In this leaflet Heparin sodium 100 IU/ml I.V. flush solution will be called Heparin flush.
In this leaflet:
• If you know that you are sensitive to
1. What Heparin flush is and what it is used for
methylparahydroxybenzoate or
2. Before you have Heparin flush
propylparahydroxybenzoate. Read the information
3. How to use Heparin flush
in the section "Important information about some of
4. Possible side effects
the ingredients of Heparin flush".
5. How to store Heparin flush
If you have Heparin flush regularly for more than five
6. Further information
days, your doctor may take regular blood tests. This
is to check the level of platelets (a type of cell) in your
blood while you have your medicine. Depending on
Heparin flush belongs to a group of medicines
the result the doctor may tell you to stop having this
called anticoagulants. It helps to stop the blood
medicine straight away.
from clotting.
Taking other medicines
Heparin flush is given into an intravenous (I.V.) line.
Please tell your doctor or pharmacist if you are
This means it is injected into the tube connected to a
taking, or have recently taken any other medicines.
vein to keep it clear by preventing the blood from
This includes any medicines which you have bought
clotting in it. It is not recommended for treatment of
without a prescription.
harmful blood clots in your body.
Pregnancy and breast-feeding
Unless your doctor has told you it is essential, you
Do not have Heparin flush
must not have Heparin flush if you are pregnant, or
• If you are allergic (hypersensitive) to heparin or any
think you are pregnant. Read the information about
of the other ingredients in your medicine. You can
benzyl alcohol in the section "Important information
find a list of these ingredients in section 6 of this
about some of the ingredients of Heparin flush". If
you are pregnant or might be pregnant, tell your
• If you know that you have, or have ever had, a big
doctor before you are given Heparin flush. If you
drop in the clotting cells (platelets) in your blood,
become pregnant while having this medicine, tell
caused by having any type of heparin (reaction
your doctor. If you are breast-feeding, ask your
called heparin-induced thrombocytopenia).
doctor for advice before having Heparin infusion.
Do not give this medicine to a premature baby, a
Driving and using machines
newborn baby, or a baby up to a month old.
Usually your medicine may have little effect on your
Take special care with Heparin flush
ability to drive or use machines. However, you
Before you have Heparin flush, tell your doctor:
should check with your doctor if you feel any side
• If you are pregnant or think you are pregnant.
effect that may stop you from driving or using
Read the section "Pregnancy and breast-feeding".
• If you are allergic (hypersensitive) to low molecular
Important information about some of the ingredients
weight heparins, such as tinzaparin, enoxaparin or
of Heparin flush
This medicine contains:
• If this medicine is for a child who is between one
• Benzyl alcohol. This is a preservative. It may harm a
month and three years old.

newborn baby. It must not be used in premature
babies or babies under one month old.
• Methylparahydroxybenzoate and
propylparahydroxybenzoate. These are
preservatives. They may give you an allergic
reaction. This may happen at any time after you
have your medicine. Please read section 4 so you
can spot any signs this may be happening to you.
• Sodium. This medicine is nearly “sodium free”.
Your medicine contains less than 23 milligrams (mg)
of sodium in each 100 International Units (IU) dose.
Please ask your doctor if you are worried about any
of the ingredients in this medicine.
Heparin flush will be given to you by a doctor or
nurse. Heparin flush should not be mixed with any
other injection.
How much Heparin flush to have
Your doctor will prescribe the right dose for you.
If you have more Heparin flush than you should
You may start to haemorrhage (bleed severely).
Please read section 4 so you can spot any signs this
may be happening to you.
You may be given another injection of a medicine
called protamine sulphate.
If you have any further questions about taking this
medicine, please ask your doctor or pharmacist.
When used as recommended the low dose of heparin
reaching the blood is unlikely to have any effects on
the body. However, information is given here on
possible side effects.
Important side effects to look out for
You must get urgent medical help if you have any of
the following symptoms. You may be having an
allergic reaction:
• You have difficulty breathing
• Your face or throat swell
• Your skin develops a severe rash
You should tell your doctor straight away if you spot
any of the following signs which mean you may be
starting to bleed severely:
• Red or brown urine
• Black tarry stools
• Unusual bruising
• Bleeding from your nose, mouth or any operation
wound that will not stop.

Other possible side effects
• Bruising or bleeding more easily. Your blood may
also form harmful clots. A big drop in clotting cells
(platelets) in your blood may give you these
symptoms. Your doctor can explain this more.
Reporting of side effects
If you get any side effects, talk to your doctor or
pharmacist. 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.
• Keep out of the reach and the sight of children.
• Do not use Heparin flush after the expiry date on
the label. The expiry date is the last day of that
• Store below 25°C.
Medicines should not be thrown away in waste
water or in household waste. Please ask your
pharmacist how to throw away any medicine you do
not need anymore. If you do this you will help protect
the environment.
What Heparin flush contains
• The active ingredient is heparin sodium.
This product contains 100 IU of heparin sodium in
each millilitre (ml).
• The other ingredients are benzyl alcohol,
propylparahydroxybenzoate, sodium chloride,
sodium citrate and water for injections.
You can find important information about some of the
ingredients near the end of section 2, just before
section 3.
What Heparin flush looks like and contents of the
Heparin flush is a clear, colourless or pale yellow
liquid. This medicine comes in glass ampoules
containing 2 ml. There are 10 ampoules in a carton.
Marketing Authorisation Holder and Manufacturer
responsible for batch release:
Fannin (UK) Limited, 42-46 Booth Drive, Park Farm
South, Wellingborough, Northamptonshire,
NN8 6GT, UK.
This leaflet was last revised in July 2014.

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.