Human chorionic gonadotrophin (hCG)
Consumer Medicine Information
What is in this leaflet
This leaflet answers some common questions about Pregnyl.
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
Pregnyl against the benefits they expect it will have for you.
If you have any concerns about using this medicine, ask your doctor or pharmacist.
Keep this information with your medicine.
You may wish to read it again.
What Pregnyl is used for
Pregnyl belongs to a group of hormones known as gonadotrophins which play an important
part in human fertility and reproduction. It only works if it is injected.
Pregnyl is used with other medicines to ripen an egg cell in the ovaries and to release
the egg (ovulation).
Pregnyl is used to increase sperm count. It is also used in young boys with un-descended
Your doctor may have prescribed Pregnyl for another reason.
Pregnyl is not addictive.
A doctor's prescription is required to obtain this medicine.
Ask your doctor if you have any questions about why this medicine has been prescribed
Before you use Pregnyl
The active ingredient of this preparation is extracted of human urine. Therefore the
risk of a transmission of a pathogen (known or unknown) cannot be completely excluded.
When you must not use it
Do not use Pregnyl if:
you are allergic (hypersensitive) to human gonadotrophins or any of the ingredients
listed at the end of the leaflet.
you have a known or suspected cancer or tumour of the ovary, breast, uterus in the
female and prostate or breast carcinoma in the mail
you have malformations of the reproductive organs which make a normal pregnancy not
you have fibroids in the uterus which make a normal pregnancy not possible
you have heavy or irregular vaginal bleeding, other than menstrual bleeding, without
a diagnosed cause.
Do not use Pregnyl if you are breast-feeding.
It is not known whether hCG passes into breast milk.
Do not use Pregnyl after the expiry date printed on the pack.
Do not use Pregnyl if the packaging is torn or shows signs of tampering.
If you are not sure whether you should start using this medicine, talk to your doctor.
Before you are given 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:
For men and women:
Uncontrolled pituitary gland or hypothalamic problems
An underactive thyroid gland (hypothyroidism)
Adrenal glands that are not working properly (adrenocortical insufficiency)
High prolactin levels in the blood (hyperprolactinemia)
Any other medical conditions (for example, diabetes, heart disease, or any other long-term
If you have any of the conditions listed above, you may not be able to use Pregnyl
or you may need a dosage adjustment or special tests during treatment.
Tell your doctor if you have or have had any other medical conditions.
Allergic reactions, both generalised and local, including swelling of the face, lips,
tongue, and/or throat that may cause difficulty in breathing or swallowing (angioedema
and anaphylaxis) have been reported. If you have an allergic reaction, stop taking
Pregnyl and seek immediate medical assistance (see also Side Effects).
Misuse for weight control
Pregnyl should not be used for body weight reduction. HCG has no effect on fat metabolism,
fat distribution or appetite.
If you are a woman:
Chance of having ovarian hyperstimulation syndrome (OHSS)
Treatment with gonadotrophic hormones like Pregnyl may cause ovarian hyperstimulation
syndrome (OHSS). This is a serious medical condition where the ovaries are overly
stimulated and the growing follicles become larger than normal. In rare cases, severe
OHSS may be life-threatening. Therefore, close supervision by your doctor is very
important. To check the effects of treatment, your doctor will do ultrasound scans
of your ovaries. Your doctor may also check blood hormone levels. (See Side Effects).
OHSS causes fluid to build up suddenly in your stomach and chest areas and can cause
blood clots to form. Call your doctor right away if you have:
severe abdominal swelling and pain in the stomach area (abdomen)
feeling sick (nausea)
sudden weight gain due to fluid build up
decreased urine output
Ovarian torsion is the twisting of an ovary. Twisting of the ovary could cause the
blood flow to the ovary to be cut off.
Before you start to use this medicine, it is important to inform your doctor if you:
have ever had ovarian hyperstimulation syndrome OHSS
are pregnant or think you may be pregnant
have ever had stomach (abdominal) surgery
have ever had a twisting of an ovary
have past or current cysts in your ovary or ovaries.
Chance of having multiple births or birth defects
In pregnancies occurring after treatment with gonadotrophic preparations, there is
an increased risk of having twins or multiple pregnancies. Multiple pregnancies carry
an increased health risk for both the mother and her babies during pregnancy and around
the time of birth.
Multiple pregnancies and characteristics of the patients undergoing fertility treatment
(e.g. age of the female, sperm characteristics) may be associated with an increased
risk of congenital abnormalities.
Chance of having pregnancy complications
In women undergoing fertility treatment there is a slightly increased risk of a pregnancy
outside of the uterus (an ectopic pregnancy). Therefore, your doctor should perform
an early ultrasound examination to exclude the possibility of pregnancy outside the
In women undergoing fertility treatment there may be a slightly higher risk of miscarriage.
Chance of having a blood clot (thrombosis)
Treatment with Pregnyl (like pregnancy itself) may increase the risk of the formation
of a blood clot in a blood vessel (thrombosis), most often in the veins of the legs
or the lungs.
Blood clots can lead to serious medical conditions, such as:
blockage in your lungs (pulmonary embolus)
blood vessel problems (thrombophlebitis)
reduced blood flow to the vital organs that may result in organ damage
reduced blood flow to your arm or leg that may result in a loss of your arm or leg.
Tell your doctor, before starting treatment, especially if:
you already know that you have an increased risk of blood clots
you, or anyone in your immediate family, have ever had a blood clot
you are severely overweight
If you are a man:
If the treatment with Pregnyl is not working, consult your doctor who may perform
Treatment with Pregnyl (hCG) can cause the body to produce substances that act against
hCG (antibodies to hCG). In rare cases this could result in ineffective treatment.
Treatment with hCG lead to increased androgen (male sexual hormone) production. Therefore
extra supervision by your doctor is necessary
in the treatment of boys who have not reached puberty. This is because Pregnyl can
cause early sexual development and delay growth.
if you have or have ever had:
heart or blood vessel disease
because worsening or recurrence may occasionally be induced as a result of increased
production of androgens (male sexual hormones).
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
For up to ten days after administration, Pregnyl may result in a false positive pregnancy
Ability to drive or operate machinery
As far as is known, Pregnyl has no effect on alertness or concentration.
How Pregnyl is given
Your doctor will decide the dose of Pregnyl.
Pregnyl will be injected into a muscle.
Females may require only one injection.
Males may receive a series of injections 2 to 3 times a week for several weeks or
Keep all doctors' appointments so your therapy can be monitored.
If you are given too much
As your treatment will be closely monitored it is unlikely you will be prescribed
too large a dose of Pregnyl. However Pregnyl can be associated with the rare condition
called Ovarian Hyperstimulation Syndrome (see Side Effects).
While you are given Pregnyl
Things you must do
Tell your doctor immediately if you think you are pregnant or become pregnant while
using this medicine.
If you are about to be started on any new medicine, tell your doctor and pharmacist
that you are taking Pregnyl.
If you are about to have any blood tests, tell your doctor that you are taking this
Things you must not do
Do not use this medicine to treat any other complaints unless your doctor tells you
Do not give your medicine to anyone else, even if they have the same condition as
Tell your doctor as soon as possible if you do not feel well while you are using Pregnyl.
If any of the following happen, tell your doctor immediately or go to Accident and
Emergency at your nearest hospital
You have pain in the stomach (abdomen) or any of the other symptoms of ovarian hyperstimulation,
even if they occur some days after the administration of Pregnyl has been given.
A possible complication of treatment with gonadotrophic hormones like Pregnyl is unwanted
overstimulation of the ovaries. The chance of this complication can be reduced by
carefully monitoring the number of maturing follicles (small round sacs in your ovaries
that contain the eggs). Your doctor will do ultrasound scans of your ovaries to carefully
monitor the number of maturing follicles. Your doctor may also check blood hormone
levels. The first symptoms of ovarian overstimulation may be noticed as pain in the
stomach (abdomen), feeling sick or diarrhoea. Ovarian overstimulation may develop
into a medical condition call ovarian hyperstimulation syndrome (OHSS), which can
be a serious medical problem. In more severe cases this may lead to enlargement of
the ovaries, collection of fluid in the abdomen and/or chest (which may cause sudden
weight gain due to fluid build-up) or clots in the blood vessels.
Signs of an allergic reaction such as 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. These allergic reactions are mostly reported as pain and rash
at the injection site.
Signs of a blood clot such as pain, warmth, redness, numbness, or tingling in your
arm or leg; confusion, extreme dizziness or severe headache. This condition is rare.
In men, fluid may be retained in the tissues, usually marked by swelling of ankles
or feet, and occasionally enlargement of the breast may occur. This can be caused
by an increased androgen production by treatment with hCG.
Tell your doctor if you notice any of the following and they worry you:
Injection site bruising, pain, redness, swelling and itching
Skin rash and fever
Breast tenderness or swelling in women
Tell your doctor if you notice any other side effects.
Other side effects not listed in this leaflet also occur in some people.
After using Pregnyl
Keep Pregnyl in the original box in a safe place out of reach of children.
Pregnyl must be stored in the dark at 2°C to 8°C (Refrigerate. Do not freeze). Protect
The solution should be used immediately after reconstitution.
Do not use Pregnyl if you notice that the reconstituted solution contains particles
or if the solution is not clear.
The product is for use in one patient only because it contains no antimicrobial preservative.
Discard any residue.
Do not use Pregnyl after the expiry date stated on the label.
Return any unused medicine to your pharmacist.
What it looks like.
The pack contains clear glass vials with 1500 or 5000 IU of human chorionic gonadotrophin
as a dry white powder.
The pack also contains a corresponding number of clear glass vials of clear colourless
liquid (solvent) which is used to dissolve the white powder.
Do not use this medicine if the glass vials are broken or damaged or if the powder
or liquid is discoloured or not clear.
Human chorionic gonadotrophin
Powder also contains:
Monobasic sodium phosphate dihydrate
Dibasic sodium phosphate dihydrate
The liquid used to dissolve the powder contains sodium chloride and water for injections.
Merck Sharp & Dohme (Australia) Pty Limited
Level 1, Building A,
26 Talavera Road
Macquarie Park NSW 2113
This leaflet was prepared 30 June 2020
Australian Registration Numbers:
Pregnyl 1500 IU: AUST R 273873
Pregnyl 5000 IU: AUST R 273874