Skip to Content


Active substance(s): MAGNESIUM SULPHATE

PDF options:  View Fullscreen   Download PDF

PDF Transcript



Magnesium Sulphate Injection 50%w/v
Magnesium Sulphate Heptahydrate BP
Read all of this leaflet carefully before you start are given this
• Keep this leaflet. You may need to read it again.
• If you have any further questions, ask your doctor or pharmacist.
• If any of the side effects become serious, or if you notice any
side effects not listed in this leaflet, please tell your doctor or

In this leaflet:

What Magnesium Sulphate Injection is and what it is used for
Before you are given Magnesium Sulphate Injection
How Magnesium Sulphate Injection will be given
Possible side effects
How to store Magnesium Sulphate Injection
Further information

1. What Magnesium Sulphate Injection is and
what it is used for
Magnesium Sulphate Injection is used to treat low levels of
magnesium in the blood.
It may also be used to treat seizures (fits) caused by a serious
complication of pregnancy known as eclampsia.

2. Before you are given Magnesium Sulphate
You should not be given Magnesium Sulphate Injection if:
• you are allergic (hypersensitive) to Magnesium Sulphate or to
any of the other ingredients in this medicine, listed in section 6
of this leaflet
• you suffer from a heart problem known as heart block
• you suffer from liver or kidney failure
Take special care with Magnesium Sulphate Injection if:
• you suffer from any liver or kidney problems
• you suffer from a disorder that causes muscle weakness known
as myasthenia gravis
If any of the above apply to you or your child please tell your doctor
or nurse before you are given Magnesium Sulphate Injection

If you are given more Magnesium Sulphate Injection than you
should be
As this medicine will be given to you whilst you are in hospital, it is
unlikely that you will be given too little or too much, however, tell
your doctor if you have any concerns.

4. Possible side effects
Like all medicines, Magnesium Sulphate Injection can cause side
effects, although not everybody gets them.
Possible side effects include:
• watery diarrhoea
• stomach pains
• feeling or being sick
• flushing of the skin
• feeling thirsty
• slowed reflexes
• temporarily low blood pressure
• drowsiness
• confusion
• muscle weakness
• slowed breathing
• low body temperature
• irregular heartbeat
• heart attack
• coma
If any of the side effects become serious, or if you notice any
side effects not listed in this leaflet, please tell your doctor or

5. How to store Magnesium Sulphate Injection
Keep out of the reach and sight of children.
This Magnesium Sulphate Injection should not be used after the
expiry date which is printed on the carton and ampoule label. The
doctor or nurse will check that the expiry date on the label has not
been passed before administering the injection to you. The expiry
date refers to the last day of that month.
Store below 25°C. Protect from light.

6. Further Information
What Magnesium Sulphate Injection contains
The active substance is Magnesium Sulphate Heptahydrate 5g.
The other ingredients are water for injections, dilute hydrochloric
acid and sodium hydroxide.

Taking other medicines
Please tell your doctor or pharmacist if you are taking or have
recently taken any other medicines, including medicines obtained
without a prescription.
Medicines which may interact with Magnesium Sulphate Injection
• CNS depressants (medicines that act on the nervous system to
cause drowsiness)
• digitalis glycosides (a medicine used to treat heart problems)
• muscle relaxants e.g. tubocurarine
• nifedipine (a medicine used to treat high blood pressure)

What Magnesium Sulphate Injection looks like and contents of
the pack
Magnesium Sulphate Injection is a clear, colorless solution supplied
in a 10ml prefilled syringe.

Pregnancy and breast-feeding
Magnesium Sulphate may be used to treat the fits associated with
eclampsia, a serious complication of pregnancy. Tell your doctor if
you think you may be pregnant or if you are breast-feeding before
being given Magnesium Sulphate Injection.

Federa SC
Avenue Jean Jaureslaan, 71
B-1030 Brussels

Driving and using machines
There are no known effects of Magnesium Sulphate Injection on
driving and using machines.

Marketing Authorisation Holder
Aurum Pharmaceuticals Ltd
Bampton Road
Harold Hill
Romford RM3 8UG

This leaflet was last approved in 06/2008.
PL 012064/0045

3. How Magnesium Sulphate Injection will be
Your doctor will give Magnesium Sulphate Injection to you into a
vein (intravenous) or into the muscle (intramuscular) either by
injection or infusion (drip). Your doctor will decide how much
Magnesium Sulphate you should be given.
For the treatment of low magnesium levels:
Up to 40g (equivalent to 160 mmols of magnesium ions) by slow
intravenous infusion (in glucose 5%) over a period of up to 5 days.
To prevent fits associated with eclampsia:
An initial intravenous dose is followed for 24 hours by either regular
intramuscular injections or an intravenous infusion.

Continued overleaf


Patients with kidney failure will be given a reduced dose.

+ Expand Transcript

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.