Consumer Medicine Information
What is in this leaflet
This leaflet answers some common questions about SOMAVERT. It does not contain all
the available information. It does not take the place of talking to your doctor or
All medicines have risks and benefits. Your doctor has weighed the risks of you using
SOMAVERT against the benefits they expect it will have for you.
If you have any concerns about using SOMAVERT, ask your doctor or pharmacist.
Keep this leaflet with the medicine. You may need to read it again.
What SOMAVERT is used for
SOMAVERT is used to treat acromegaly, a disease caused by the body making too much
growth hormone, which controls the growth of tissues, organs and bones. This leads
to an enlargement of the bones (especially of the hands and feet), and other possible
SOMAVERT is a product of biotechnology and contains the active substance pegvisomant.
Pegvisomant is similar to human growth hormone, which exists naturally in the human
SOMAVERT works by blocking the action of the body's growth hormone.
Ask your doctor if you have any questions about why SOMAVERT has been prescribed for
Your doctor may have prescribed it for another reason.
SOMAVERT is not addictive.
SOMAVERT is available only with a doctor’s prescription.
Before you start to use it
When you must not use it
Do not use SOMAVERT if you have an allergy to:
any of the ingredients listed at the end of this leaflet
Some of the symptoms of an allergic reaction may include shortness of breath, wheezing
or difficulty breathing; swelling of the face, lips, tongue or other parts of the
body; rash, itching or hives on the skin.
Do not use SOMAVERT after the expiry date printed on the pack or if the packaging
is torn or shows signs of tampering.
If it has expired or is damaged, return it to your pharmacist for disposal.
If you are not sure whether you should start using SOMAVERT, talk to your doctor.
Before you start to use it
Tell your doctor if you have allergies to any other medicines, foods, preservatives
Tell your doctor if you have or have had any of the following medical conditions:
a tumour in the pituitary gland (a hormonal gland in the brain)
problems with your blood sugar levels, either too high (diabetes) or too low (hypoglycaemia)
problems with your blood liver enzyme levels
obstructive biliary tract disease.
Your doctor may want to carry out some additional tests or take additional precautions
before starting treatment.
Tell your doctor if you are pregnant or plan to become pregnant or are breast-feeding.
SOMAVERT is not recommended during pregnancy.
If you have not told your doctor about any of the above, tell him/her before you start
Taking other medicines
Tell your doctor or pharmacist if you are taking any other medicines, including any
that you get without a prescription from your pharmacy, supermarket or health food
Some medicines and SOMAVERT may interfere with each other. These include:
medicines used to treat diabetes such as insulin or oral hypoglycaemic medicines (which
lower your blood sugar levels)
opioid medicines used to relieve pain.
These medicines may be affected by SOMAVERT or may affect how well it works. You may
need different amounts of SOMAVERT, or you may need to take different medicines.
Your doctor and pharmacist have more information on medicines to be careful with or
avoid while taking SOMAVERT.
How to use SOMAVERT
Follow all directions given to you by your doctor or pharmacist carefully.
They may differ from the information contained in this leaflet.
If you do not understand the instructions in the pack, ask your doctor or pharmacist
How much to use
A starting dose of 80 mg of SOMAVERT will be given to you by your doctor.
Following this, your doctor will tell you how much SOMAVERT you must use each day.
How to use it
SOMAVERT is given by injection under the skin (subcutaneous).
It is important to use a different site every day to prevent the buildup of fatty
tissue under the skin at the injection site.
You will be taught how to mix and inject SOMAVERT. It is a good idea to refer to the
instruction sheet in the pack each time you mix and inject.
It is very important that you always use SOMAVERT exactly as you have been instructed.
If you are not sure what to do, ask your doctor or pharmacist.
When to use it
Use SOMAVERT at about the same time each day.
Using it at the same time each day will have the best effect. It will also help you
remember when to use it.
It does not matter if you use SOMAVERT before or after food.
How long to use it
Continue using SOMAVERT for as long as your doctor tells you.
SOMAVERT helps to control your condition, but does not cure it. It is important to
keep using SOMAVERT even if you feel well.
If you forget to use it
Inject the next dose as soon as you remember, and then go back to using SOMAVERT as
you would normally.
Do not use a double dose to make up for the dose that you missed.
This may increase the chance of you getting an unwanted side effect.
If you are not sure what to do, ask your doctor or pharmacist.
If you have trouble remembering to use SOMAVERT, ask your pharmacist for some hints.
If you use too much (overdose)
Immediately telephone your doctor or Poisons Information Centre (telephone 131 126)
or go to Accident and Emergency (Casualty) at your nearest hospital if you think you
or anyone else may have used too much SOMAVERT. Do this even if there are no signs
of discomfort or poisoning.
No serious reactions have been reported after an overdose of SOMAVERT.
While you are using SOMAVERT
Things you must do
Keep all your doctor's appointments so that your progress can be checked.
Your doctor will check your liver function and other blood substance levels periodically
to prevent unwanted side effects from happening, and to adjust your dose of SOMAVERT.
If you are about to be started on any new medicine, remind your doctor and pharmacist
that you are using SOMAVERT.
Tell any other doctors, dentists, and pharmacists who treat you that you are using
If you are going to have surgery, tell the surgeon or anaesthetist that you are using
It may affect other medicines used during surgery.
If you become pregnant while using SOMAVERT, tell your doctor immediately.
If you are about to have any blood tests, tell your doctor that you are using SOMAVERT.
It may interfere with the results of some tests.
Things you must not do
Do not use SOMAVERT to treat any other complaints unless your doctor tells you to.
Do not give SOMAVERT to anyone else, even if they have the same condition as you.
Do not stop using SOMAVERT or lower the dosage without checking with your doctor.
If you stop using it suddenly, your condition may worsen or you may have unwanted
Things to be careful of
Be careful driving or operating machinery until you know how SOMAVERT affects you.
SOMAVERT may cause dizziness in some people. If you feel dizzy, do not drive, operate
machinery or do anything else that could be dangerous.
Tell your doctor or pharmacist as soon as possible if you do not feel well while you
are using SOMAVERT.
SOMAVERT helps most people with acromegaly, but it may have unwanted side effects
in a few people. All medicines can have side effects. Sometimes they are serious,
most of the time they are not. You may need medical attention if you get some of the
Do not be alarmed by the following list of side effects. You may not experience any
Ask your doctor or pharmacist to answer any questions you may have.
Tell your doctor or pharmacist if you notice any of the following:
soreness, swelling or redness at the injection site
build-up of fatty tissue under the skin at the injection site
flu like symptoms
The above list includes the more common side effects of SOMAVERT. They are usually
mild and short-lived.
SOMAVERT can also cause changes in the levels of certain substances in your blood.
These can only be found when your doctor does tests from time to time to check your
Mild and serious allergic reactions have been reported in some patients using SOMAVERT.
Tell your doctor immediately or go to Accident and Emergency at your nearest hospital
if you notice any of the following
swelling of the face, tongue, lips or throat
wheezing or trouble breathing
generalised skin rash or itching
These are symptoms of a serious allergic reaction and you may need urgent medical
attention or hospitalisation.
Tell your doctor or pharmacist if you notice anything that is making you feel unwell.
Other side effects not listed above may also occur in some people.
After using SOMAVERT
Keep the vials and diluent syringes in their packs until it is time to use them.
If you take them out of their packs they may not keep well.
Keep the SOMAVERT vials in your refrigerator where the temperature stays between 2°
and 8° Celsius. Do not freeze.
Store the diluent syringes at room temperature (below 30°C) or in the refrigerator
at 2°C to 8°C. Do not freeze.
Inject your dose of SOMAVERT immediately or within 6 hours after preparation.
If storage is necessary, store in the refrigerator at 2°C to 8°C.
Do not store SOMAVERT or any other medicine in the bathroom or near a sink. Do not
leave it on a window sill or in the car.
Heat and dampness 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 tells you to stop using SOMAVERT or the expiry date has passed, ask
your pharmacist what to do with any medicine that is left over.
What it looks like
SOMAVERT comes as a white powder that is mixed with a diluent to form a clear solution
SOMAVERT powder is contained in a glass vial and the diluent (Water for Injections)
is contained in a glass syringe.
SOMAVERT comes in three strengths: 10 mg, 15 mg and 20 mg.
The 10 mg and 15 mg strengths are available in packs of 30's. The 20 mg strength is
available in packs of 1's and 30's.
SOMAVERT vials contain 10 mg, 15 mg or 20 mg of the active ingredient pegvisomant.
Each vial of SOMAVERT contains the following inactive ingredients:
dibasic sodium phosphate
monobasic sodium phosphate monohydrate
The diluent syringes contain sterile Water for Injections.
SOMAVERT is supplied in Australia by:
Pfizer Australia Pty Ltd
Toll Free Number: 1800 675 229
Australian Registration Numbers
SOMAVERT 10 mg AUST R 286628
SOMAVERT 15 mg AUST R 286629
SOMAVERT 20 mg AUST R 286630
This leaflet was prepared in April 2020
© Pfizer Australia Pty Ltd 2019
® Registered Trademark