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Read all of this leaflet carefully before you start taking this
medicine because it contains important information for you.
• Keep this leaflet. You may need to read it again.
• If you have any further questions, ask your doctor or your
• This medicine has been prescribed for you only. Do not pass it on
to others. It may harm them, even if their signs of illness are the
same as yours.
• If you get any side effects talk to your doctor or pharmacist.
This includes any possible side effects not listed in this leaflet.
What is in this leaflet:
1. What Restandol Testocaps is and what it is used for
2. What you need to know before you take Restandol Testocaps
3. How to take Restandol Testocaps
4. Possible side effects
5. How to store Restandol Testocaps
6. Contents of the pack and other information

Testosterone undecanoate




1. What Restandol Testocaps is and what it is used for
Restandol Testocaps are soft oval glossy capsules which contain
40 mg of testosterone undecanoate. The active substance,
testosterone undecanoate is turned into testosterone by your body.
Testosterone is a natural male hormone known as an androgen. It is
produced in the body by both men and women.
Restandol Testocaps is used in adult men for testosterone replacement
to treat various health problems caused by a lack of testosterone
(male hypogonadism). This should be confirmed by two separate blood
testosterone measurements and also include clinical symptoms such
as impotence, infertility, low sex drive, tiredness, depressive moods,
bone loss caused by low hormone levels.
Restandol Testocaps are used if your body does not make enough
testosterone of its own, for example:
• impotence caused by hormonal disorders
• after castration or a similar problem called eunuchoidism
• decreased sex drive and decreased mental and physical activity
• certain types of infertility because you don’t make enough sperm
It may also be used to treat a type of bone disease (osteoporosis)
caused by having too little testosterone.
2. What you need to know before you take Restandol Testocaps
• Do not take Restandol Testocaps: If you are allergic (hypersensitive)
to testosterone undecanoate or any of the ingredients of this
medicine (listed in section 6 “What Restandol Testocaps contain”).
• If you have or have had a tumour of your prostate or breast or are
suspected to have one of these tumours.
• If you have ever had liver cancer
Take special care with Restandol Testocaps:
Treatment with male hormones like testosterone may increase the size
of the prostate gland, especially in elderly men. Therefore your doctor
will examine your prostate gland at regular intervals. In men over
the age of 45, the prostate gland will be investigated by digital rectal
examination (DRE) and blood tests for prostate-specific antigen (PSA).

Additionally, at regular intervals, blood tests will be done to check the
oxygen-carrying substance in your red blood cells (haemoglobin). In
very rare cases the number of red blood cells will increase too much
leading to complications.
The following blood checks should be carried out by your doctor before
and during the treatment: testosterone blood level, full blood count.
Medical check may also be necessary in some other conditions.
➞Tell your doctor if you have ever had, still have, or are suspected
to have:
• breast cancer which has spread to the bones
• kidney or lung cancer
• heart disease
• kidney disease
• liver disease
• high blood pressure
• diabetes mellitus
• epilepsy
• migraine, headaches
• prostatic complaints, such as problems passing urine
• blood clotting problems - thrombophilia (an abnormality of blood
coagulation that increases the risk of thrombosis – blood clots in
blood vessels)
If you are suffering from severe heart, liver or kidney disease,
treatment with Restandol Testocaps may cause severe complications
in the form of water retention in your body sometimes accompanied by
(congestive) heart failure.
Tell your doctor if you have high blood pressure or if you are treated
for high blood pressure as testosterone may cause a raise in blood
If you have sleep apnea (temporarily stopping breathing during your
sleep), this may get worse if you are using testosterone-containing
products. Let your doctor know if you are worried about this. Extra
supervision by your doctor may be necessary in case you are
overweight or suffer from chronic lung disease.
➞Also tell your doctor
• if you are taking anticoagulants (drugs to treat blood clots)
Your medication may need to be monitored more closely.
Children and adolescents
The safety and efficacy of this medicine has not been adequately
determined in children and adolescents.
Extra supervision by the doctor is necessary in the treatment of
children and adolescents since testosterone administration in general
may cause early sexual development and limits growth (see section 4
“Children and adolescents”).
Other medicines and Restandol Testocaps
➞ Please tell your doctor or pharmacist if you are taking, have recently
taken, or might take any other medicines-even those not prescribed.
Other medicines may affect how Restandol Testocaps works or
Restandol Testocaps may affect how they work. Therefore you must
tell your doctor or pharmacist if you are using or are about to use:
• insulin and/or other medicines to control your blood sugar levels;
• medicines to reduce the clotting of your blood (anti-coagulants);

The following medicines may decrease the effect of Restandol Testocaps:
• antibiotics such as rifampicin
• anti-epileptic drugs such as barbiturates, carbamazepine,
dichloralphenazone, phenylbutazone, phenytoin and primidone.
The use of androgens like Restandol Testocaps may lead to a
reduction of the doses of these medicines
➞Also tell your doctor or pharmacist if you are using or about to use
the hormone ACTH or corticosteroids (used to treat various conditions
such as rheumatism, arthritis, allergic conditions and asthma). The use
of androgens like Restandol Testocaps may increase the risk of water
retention, especially if your heart and liver are not working properly.
Laboratory tests:
Androgens may also affect the results of some laboratory tests
(e.g. thyroid gland). Therefore you must tell your doctor or the
laboratory staff performing the tests that you are using this medicine.
Please tell your doctor or pharmacist if you are taking or have recently
taken any other medicines, including medicines obtained without a
Using Restandol Testocaps with food and drink
Food allows testosterone undecanoate, the active substance of this
medicine to be absorbed by your body.
➞Therefore, Restandol Testocaps must be taken with a normal meal
(see section 3).
Pregnancy, breast-feeding and fertility
Restandol Testocaps are not for use in women, therefore this medicine
must not be taken by women who are pregnant or think that they are
pregnant, or by women who are breast-feeding.
In men, treatment with Restandol Testocaps can lead to fertility
disorders by repressing sperm formation.
If you are planning to have a baby, ask your doctor or pharmacist for
advice before taking this medicine.
Driving and using machines
As far as is known this medicine has no influence on driving or using
Important information about some of the ingredients of
Restandol Testocaps
This medicine contains :
Sunset yellow (E110) which can cause allergic type reactions
including asthma. Allergy is more common in those people who are
allergic to aspirin.
Improper use
If you are a patient who participates in competitions governed by
the World Anti-Doping Agency (WADA), then you should consult the
WADA-code before using this medicine as Restandol Testocaps can
interfere with anti-doping testing.
The misuse of this medicine to enhance ability in sports carries serious
health risks and is to be discouraged.
3. How to take Restandol Testocaps
Always take this medicine exactly as your doctor has told you. You
should check with your doctor or pharmacist if you are not sure.

If you stop taking Restandol Testocaps:
When treatment with this medicine is stopped, complaints such as
those experienced before treatment may re-occur within a few weeks.
If you have any further questions on the use of this medicine, ask your
doctor or pharmacist.

Not known (cannot be estimated from available data)
• itching (pruritus)
• acne
• nausea (feeling sick)
• problems with your liver including liver tumours, though this
is rare
• changes in the way your body processes fats
• depression
• nervousness
• mood alterations
• muscle pain
• fluid retention in the tissues, usually marked by the swelling of
ankles or feet
• high blood pressure
• increased or decreased sex drive
• prolonged painful erection
• decreased amounts of ejaculation fluid and sperm
• enlargement of the breasts
• growth of the prostate gland
• increased levels of a blood marker which is associated with
prostate cancer (PSA)
• worsening of the early stage of prostate cancer
• yellowing of the skin or eyes
• difficulty passing urine
• allergy to sunset yellow, a colour used in the capsules.
• electrolyte changes (sodium, potassium, calcium, inorganic
phosphate and water retention)
• no sperm count
In a few patients diarrhoea, stomach pain or discomfort have been
reported during the use of this medicine.
Children and adolescents:
The following side effects have been reported in pre-pubertal children
using androgens:
• early sexual development;
• penis enlargement;
• an increased frequency of erections;
• growth limitation (limited body height)
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.

4. Possible side effects
Like all medicines, Restandol Testocaps can have side effects,
although not everybody gets them.
Common (may affect upto 1 in 10 people)
• increase in red blood cell count (the cells which carry the oxygen
in your blood); hematocrit (percentage of red blood cells in blood)
and haemoglobin (the component of red blood cells that carries
oxygen), identified by periodic blood tests.

5. How to store Restandol Testocaps
Keep this medicine out of the sight and reach of children.
Do not use this medicine after the expiry date stated on the package,
sachet and blister, after the term “exp” (expiry date). The expiry date
refers to the last day of that month.
Do not store above 30 °C.
Do not refrigerate or freeze.
Store in the original package and keep the blister in the outer carton.

The recommended dose is 3–4 capsules daily during the first 2–3 weeks,
followed by a gradual decrease to 1–3 capsules daily. Look at the label
on the pack to see how many capsules your doctor would like you to
take each day.
You must take this medicine with a normal meal.
Swallow the capsules whole without chewing, using some water or
other fluid.
Depending on the dose prescribed for you, take the capsules as shown
in the table below.
daily dose

No. of capsules to take

Smaller doses, taken less often, may be given if you are elderly.
Your doctor will have chosen the correct dose for you.
Use in children and adolescents
The safety and efficacy of this medicine have not been adequately
determined in children and adolescents. Pre-pubertal children using
this medicine will be monitored by your doctor (see section 2 “Take
special care with Restandol Testocaps”).
If you take more Restandol Testocaps than you should:
If you have taken several capsules at once, there is no need for great
concern, however you should tell your doctor. The castor oil in the
capsule may cause diarrhoea.
If you forgot to take Restandol Testocaps:
Don’t worry.
If you miss the morning dose and it is more than 2 hours after breakfast,
wait until lunch-time and then take the dose. If you miss the evening
dose, and its more than 2 hours after dinner, don't take the missed
dose. Take the next morning dose as normal.
➞Remember to always take Restandol Testocaps with food.


Do not throw away any medicines via wastewater or household waste.
Ask your pharmacist how to throw away medicines you no longer use.
These measures will help to protect the environment.

6. Contents of the pack and other information
What Restandol Testocaps contain
The active substance is: Testosterone undecanoate, 40 mg which is
equivalent to 25.3 mg testosterone.
The other ingredients are:
• Capsule contents:
Castor oil and propylene glycol laurate (E477)
• Capsule shell ingredients:
Glycerin, Sunset Yellow (E110) and gelatin
• Printing ink:
Opacode WB® white
• Auxiliary substances:
Medium-chain triglycerides and Lecithin
What Restandol Testocaps looks like and contents of the pack
Restandol Testocaps are soft oval glossy capsules, transparent,
orange in colour containing a yellow oily fill.
A box of Restandol Testocaps contains either 3 or 6 sachets.
Each sachet contains a blister strip with 10 capsules.
If you have any further questions or require the full prescribing
information for this medicine, please consult your doctor or pharmacist.
Marketing Authorisation Holder and Manufacturer
Marketing Authorisation Holder:
Merck Sharp & Dohme Limited,
Hertford Road, Hoddesdon,
Hertfordshire, EN11 9BU, UK
N.V. Organon, Kloosterstraat 6
5349 AB Oss, The Netherlands
Other formats:
To listen to or request a copy of this leaflet in Braille, large print or
audio please call, free of charge:
0800 198 5000 (UK only)
Please be ready to give the following information:
Product name
Restandol Testocaps,
40 mg Capsules, Soft
Reference number
This is a service provided by the Royal National Institute of
Blind People.
This leaflet was last updated in November 2016
PIL.RES.16.UK.4917 IA.Art.107b
© Merck Sharp & Dohme Limited, 2016. All rights reserved.

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