Description
Classification
Testosterone Undecanoate 40mg x 10 Capsules is an oral androgen medicine containing testosterone undecanoate, an ester of the naturally occurring male sex hormone testosterone. Testosterone replacement medicines are used in adult men where testosterone deficiency has been clinically assessed and confirmed through appropriate medical testing. In the UK, testosterone medicines are prescription-only and should be used under the supervision of an appropriate healthcare professional.
What is Testosterone Undecanoate 40mg x 10 Capsules?
Testosterone Undecanoate 40mg capsules contain 40mg of testosterone undecanoate per capsule. The active ingredient is converted by the body into testosterone and is intended to help restore testosterone levels in men with confirmed testosterone deficiency. Testosterone plays an important role in male sexual development, libido, reproductive function, muscle and bone maintenance and general wellbeing. Oral testosterone undecanoate has historically been supplied as soft capsules, although some 40mg capsule products previously available in the UK, including Restandol Testocaps, are now listed as discontinued.
Dosage
The dose of testosterone undecanoate should be individually determined by the prescribing clinician according to symptoms, testosterone blood results and response to treatment. Historical UK information for 40mg testosterone undecanoate capsules describes an initial dose of 3–4 capsules daily for the first 2–3 weeks, followed by a reduced maintenance dose of 1–3 capsules daily; however, these figures should not be treated as a personal dosing recommendation, particularly because formulations and current product availability can differ. The capsules should be taken with a normal meal and swallowed whole without chewing.
How Does Testosterone Undecanoate 40mg x 10 Capsules Work?
Testosterone undecanoate supplies testosterone to the body after oral administration. Testosterone then interacts with androgen receptors in tissues throughout the body, helping support normal androgen-dependent functions. When testosterone deficiency has been confirmed, replacement treatment can help restore circulating testosterone towards an appropriate physiological range and may improve symptoms associated with low testosterone. The response to treatment varies between individuals, which is why medical monitoring is important during therapy.
Benefits
When prescribed for confirmed testosterone deficiency, testosterone replacement can help address symptoms caused by inadequate testosterone levels and support normal physiological functions. Potential treatment benefits may include:
- Supporting normal testosterone levels
- Improving symptoms associated with testosterone deficiency
- Supporting libido and sexual function
- Helping maintain muscle mass and bone health
- Supporting normal energy and general wellbeing
- Supporting normal male secondary sexual characteristics
The extent of improvement depends on the individual’s underlying condition, testosterone levels and response to treatment, and treatment should be monitored by a healthcare professional.
When Should You Not Take Testosterone Undecanoate 40mg x 10 Capsules?
Testosterone undecanoate should not be taken by people who are allergic to testosterone undecanoate or any ingredient in the formulation, and it is contraindicated in men with known or suspected prostate or male breast cancer and in people with a current or previous liver tumour. It is not intended for women, particularly during pregnancy or breastfeeding, and it should not be used in children or adolescents unless specifically directed within appropriate specialist care.
What is the Mechanism of Testosterone Undecanoate 40mg x 10 Capsules?
Testosterone undecanoate is a testosterone ester that is converted within the body to testosterone. The resulting testosterone binds to androgen receptors and influences gene expression and cellular processes responsible for normal androgenic and anabolic activity. Through this mechanism, testosterone contributes to the development and maintenance of male reproductive tissues, muscle and bone and can influence libido, red blood cell production and other physiological functions. Oral testosterone undecanoate formulations are designed to provide testosterone without relying on the same absorption route as unmodified oral testosterone.
Uses of Testosterone Undecanoate 40mg x 10 Capsules
Testosterone undecanoate is used as testosterone replacement therapy for adult men with hypogonadism, where testosterone deficiency has been confirmed through appropriate clinical assessment and blood testing. Symptoms associated with testosterone deficiency can include reduced libido, erectile difficulties, tiredness, depressed mood, infertility and changes in body composition. Testosterone replacement is not intended simply for increasing muscular development or physical performance in healthy individuals.
Warnings and Precautions for Testosterone Undecanoate 40mg x 10 Capsules
Testosterone therapy requires appropriate medical assessment and ongoing monitoring, particularly where there is a history of prostate problems, cardiovascular disease, liver or kidney impairment, high blood pressure, sleep apnoea, epilepsy, migraine or blood-clotting disorders. Doctors may monitor testosterone levels, full blood count and other relevant health markers during treatment. Testosterone can increase blood pressure and may affect red blood cell levels, while treatment can also reduce sperm production and fertility.
Side Effects of Testosterone Undecanoate 40mg x 10 Capsules
Possible side effects associated with testosterone treatment include acne, oily skin, changes in libido, increased red blood cell production, fluid retention, mood changes and changes in sperm production. Excessive androgen exposure may cause symptoms such as irritability, nervousness, weight gain or prolonged and frequent erections. Testosterone therapy can also affect blood pressure and may worsen sleep apnoea in susceptible individuals. Any persistent or concerning symptoms should be discussed with a healthcare professional.
Storage for Testosterone Undecanoate 40mg x 10 Capsules
Testosterone Undecanoate capsules should be kept in their original packaging and stored according to the instructions provided with the specific product. Keep the capsules away from excessive heat, moisture and direct sunlight and store them safely out of the reach of children. The medicine should only be used before the expiry date shown on the packaging, and damaged or compromised capsules should not be used.
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Frequently Asked Questions
1. What is Testosterone Undecanoate 40mg used for?
Testosterone Undecanoate 40mg is an oral testosterone replacement medicine used for adult men with confirmed testosterone deficiency, also known as male hypogonadism, where appropriate clinical symptoms and blood-test results support treatment.
2. How should Testosterone Undecanoate capsules be taken?
The prescribed dose should be taken exactly as directed by the doctor or pharmacist. Traditional 40mg capsule information specifies taking the capsules with a normal meal and swallowing them whole without chewing, because food is important for absorption.
3. Can Testosterone Undecanoate improve low testosterone symptoms?
Testosterone replacement may improve symptoms associated with confirmed testosterone deficiency, which can include reduced libido, tiredness, erectile difficulties, depressed mood and changes in body composition. The response differs between individuals.
4. Can Testosterone Undecanoate affect fertility?
Yes. Testosterone replacement can suppress the body’s natural sperm production and may therefore reduce fertility. Anyone wishing to preserve fertility should discuss this with a healthcare professional before starting testosterone treatment.
5. Is Testosterone Undecanoate available as a UK prescription medicine?
Testosterone medicines are prescription-only in the UK. Some 40mg oral testosterone undecanoate products previously marketed in the UK are currently recorded as discontinued, so product availability should be confirmed through an authorised pharmacy or healthcare provider.
