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(testosterone undecanoate)
This medicine is available as the above name but will be referred to as Restandol Testocaps throughout the
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 pharmacist.
• 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
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.
• 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 “Contents of the pack and other information”).
• 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
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
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 pressure.
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
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
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 prescription.
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 machines.
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
The misuse of this medicine to enhance ability in sports carries serious health risks and is to be discouraged.
Always take this medicine exactly as your doctor has told you. You should check with your doctor or pharmacist if
you are not sure.
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.
Prescribed 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. Prepubertal 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.
If you stop taking Restandol Testocaps:
When treatment with this medicine is stopped, complaints such as those experienced before treatment may reoccur within a few weeks.
If you have any further questions on the use of this medicine, ask your doctor or pharmacist.
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.
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 website: By reporting side effects you can help provide more information on the safety of this
• Do not store above 30°C. Do not refrigerate or freeze. Store in the original package in order to protect from
• Keep all medicines out of the sight and reach of children.
• Do not use after the expiry date printed on the carton. The expiry date refers to the last day of that month.
• If your doctor tells you to stop using the medicine, please take it back to the pharmacist for safe disposal. Only
keep the capsules if your doctor tells you to.
• If the capsules become discoloured or show signs of any other deterioration, you should seek the advice of your
pharmacist who will advise you what to do.
• Medicines should not be disposed of via wastewater or household waste. Ask your pharmacist how to dispose
of medicines no longer required. These measures will help to protect the environment.
Each Restandol Testocaps Capsule contains 40mg testosterone undecanoate as the active ingredient.
Restandol Testocaps also contain castor oil, propylene glycol laurate (E477), glycerin, gelatin and sunset yellow
The brown soft gelatin capsules are printed in white ORG and DV3 and are supplied in 3 x 10 blister strips each
contained in individual pouches.
Restandol Testocaps are manufactured by N.V Organon Oss Holland and are procured from within the EU and
repackaged by the Product Licence holder: O.P.D. Laboratories Ltd., Unit 6 Colonial Way, Watford, Herts WD24 4PR.
PL No: 15814/0287 Restandol® Testocaps® 40mg Capsules
Leaflet revision and issue date (Ref.): 21.02.2017.
Restandol is a registered Trade Mark of Merck Sharp & Dohme B.V., The Netherlands.


To request a copy of this leaflet in Braille, large print or
audio please call 01923 332 796.

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