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(testosterone undecanoate)
This medicine is available as the above name but will be referred to as Restandol Testocaps
throughout the following:
Read all of this leaflet carefully before you start taking this medicine.

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. Do not pass it on to others. It may harm them, even if
their symptoms are the same as yours.

If any of the side effect gets serious or if you notice any side effects not listed in this leaflet,
please tell your doctor or your pharmacist.
In this leaflet:
1. What Restandol Testocaps are and what are they used for
2. Before you take Restandol Testocaps
3. How to take Restandol Testocaps
4. Possible side effects
5. How to store Restandol Testocaps
6. Further 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 are used if your body does not make enough testosterone of its own, for
• 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
Do not take Restandol Testocaps
• If you are allergic (hypersensitive) to testosterone undecanoate or any of the ingredients of
Restandol Testocaps
• If you have prostate cancer
• If you have breast cancer
• If you have ever had liver cancer
Take special care with Restandol Testocaps:
Extra supervision by your doctor may sometimes be necessary; particularly if you are elderly. In men
over the age of 45, the prostate gland will be investigated by digital rectal examination (DRE) of the
prostate and by determination of the serum prostate-specific antigen (PSA) via blood tests.
→ Tell your doctor if you have ever had:
• heart disease
• kidney disease
• liver disease
• high blood pressure
• epilepsy
• migraine
• prostatic complaints, such as problems passing urine
• cancer of the lungs, kidney, breast or bones
→ Also tell your doctor
• if you are diabetic or
• if you are taking anticoagulants (drugs to treat blood clots)
Your medication may need to be monitored more closely.
Children and adolescents
Safety and efficacy have not been adequately determined in children and adolescents.
Extra supervision by the doctor is necessary in the treatment of young boys since male hormones
may cause early sexual development and delay growth.
Extra supervision by a doctor is also necessary in elderly men since male hormones may increase the
size of the prostate gland. Furthermore, at regular intervals, blood tests will be done to check the
oxygen-carrying substance in your red blood cells (hemoglobin).
In very rare cases the number of red blood cells will increase too much leading to complications.
Taking other medicines
Other medicines may affect how Restandol Testocaps works or Restandol Testocaps may affect how
they work.
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.
Restandol Testocaps may also affect how drugs used to treat diabetes and blood clots work.
Please tell your doctor or pharmacist if you are using (or intend to use anti-diabetic, anti-clotting
medicines, the hormone ACTH or corticosteroids (used to treat various conditions such as
rheumatism, arthritis, allergic conditions and asthma): Restandol Testocaps may increase the risk of
water retention, especially if your heart and liver are not working properly.
Restandol testocaps may also affect the results of some laboratory tests (e.g. thyroid gland). Tell your
doctor or laboratory staff that you are using Restandol Testocaps.
Please tell your doctor or pharmacist if you are taking or have recently taken any other medicines,
including medicines obtained without a prescription.
Taking Restandol Testocaps with food and drink
Food allows testosterone undecanoate to be absorbed by your body.
→ Therefore, Restandol Testocaps must be taken with a normal meal.
Pregnancy and breast-feeding
Restandol Testocaps must not be taken during pregnancy or when you are breast feeding.
Ask your doctor or pharmacist for advice before taking any medicine.
Driving and using machines
As far as is known Restandol Testocaps have no adverse effect on alertness or concentration.
Important information about some of the ingredients of Restandol Testocaps
The capsules also contain:
Glycerin which is harmful in high doses and may cause headache, stomach upset or diarrhoea.
Sunset yellow (E110) which can cause allergic type reactions including asthma. Allergy is more
common in those people who are allergic to aspirin.

Always take Restandol Testocaps exactly as your doctor has told you. You should check with your
doctor or pharmacist if you are not sure.
Usually, the dosage 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 Restandol Testocaps 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.
Restandol Testocaps should not be given to children who have not reached puberty.
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 have any further questions on the use of the product, ask your doctor or pharmacist.
Like all medicines, Restandol Testocaps can have side effects, although not everybody gets them.
Mild side effects include:
• headache
• dizziness
• diarrhoea
Other side effects that may occur during testosterone therapy are:
• rash
• nausea (feeling sick)
• yellowing of the skin or eyes
• increased or decreased sex drive
• depression
• nervousness
• mood disturbances
• muscle pain
• high blood pressure
• changes in the way your body processes fats
• increase in the number of red blood cells
• problems with your liver including liver tumours, though this is rare.
• allergy to sunset yellow, a colour used in the capsules.
In men, enlargement of the breasts, growth of the prostate gland, worsening of the early stage of
prostate cancer, difficulty passing urine, prolonged painful erection, decreased amounts of ejaculation
fluid and sperm.
In women, increase in facial or body hair, acne, no or lighter periods and voice changes which may
not return to normal.
In children, early sexual development and delayed bone growth.
In a few patients stomach pain or discomfort have been reported during the use of Restandol
If any of the side effects gets serious, or if you notice any side effects not listed in this leaflet, please
tell your doctor or pharmacist.
• Do not store above 30°C. Do not refrigerate or freeze. Store in the original package in order to
protect from light.
• Do not use after the expiry date printed on the carton.
• 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
Restandol Testocaps also contain castor oil, propylene glycol laurate (E477), glycerin, gelatin and
sunset yellow (E110).
The brown soft gelatin capsules are printed in white ORG and D3V 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 licence holder who is: OPD Laboratories Ltd., Unit 6 Colonial Way,
Watford, Herts WD24 4PR.
PL No: 15814/0287 Restandol® Testocaps® 40mg Capsules
Leaflet revision and issue date (Ref.): 09.07.2013.
Restandol is a registered trade mark of N.V. Organon, The Netherlands.
To request a copy of this leaflet in Braille, large print or audio please call 01923 332 796. 

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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.