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This website has separate sections for healthcare professionals (containing promotional information), and patients who have been prescribed Testogel® (testosterone) 16.2 mg/g gel, within the UK.

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This website is provided for patients in the UK by Besins Healthcare (UK) Ltd.

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Frequently Asked Questions (FAQ)

Adverse event reporting

If you get any side effects, talk to your doctor, pharmacist or nurse. This includes any possible side effects not listed in this packaged leaflet. You can also report side effects directly via the Yellow Card Scheme at: or search for MHRA Yellow Card in the Google Play or Apple App Store. By reporting side effects you can help provide more information on the safety of this medicine.


Couldn’t find the information that you were looking for? We’ve shared our most frequently asked questions. Simply search for your query below.

Can I shower or swim after applying Testogel® 16.2 mg/g gel?

You should wait at least 2 hours after applying Testogel® 16.2 mg/g gel before showering or swimming.1

Can I take my Testogel® 16.2 mg/g gel pump on holiday?

You’re allowed to carry essential medicines of more than 100 mL in your hand luggage, but you need supporting documentation from a relevant medical professional (e.g. a letter from your doctor or a copy of your prescription).2

Airport staff might need to open the containers to screen or X-ray the liquids at the security point. We would recommend either putting the medicine in the hold luggage, or carrying it separately from other liquids with a letter from your doctor or a copy of your prescription, because the volume of the gel in the pump is approximately 100 mL. At security, you must present medications for inspection.

As with taking any medicine abroad, we would also recommend you check the requirements of the country you are visiting. Visit the website for more details.

How long will one Testogel® 16.2 mg/g gel pump last?

Each Testogel® 16.2 mg/g gel pump contains 88g of gel and delivers a minimum of 60 depressions. How long the pump lasts depends on the dose prescribed by your doctor. The table below shows a rough guide for how long you can expect each pump to last for different doses.1

Depressions per day Dose per day (mg) Estimated lifetime (days)
1 20.25 60
2 40.50 30
3 60.75 20
4 81.0 15

How do I store Testogel® 16.2 mg/g gel?

Keep your Testogel® 16.2 mg/g gel in a safe place to protect it. Store Testogel® 16.2 mg/g gel at room temperature. When it is time to throw away the pump, you can safely throw away used Testogel® 16.2 mg/g gel in your household bin. Be careful to prevent accidental exposure to children or pets. Keep Testogel® 16.2 mg/g gel away from fire.5

Do not use this medicine after the expiry date stated on the labelling after EXP.

What is testosterone deficiency?

Among lots of other things, your body relies on testosterone to stay well.

As you age, your testosterone levels naturally decline. However, in men with testosterone deficiency, testosterone levels drop to a level where it starts to affect your overall health in a negative way.

Testosterone deficiency affects the body in lots of different ways, discover the most common signs and symptoms.

Why is testosterone deficiency a problem?

If you have testosterone deficiency, over time it will slowly affect your body in a negative way. This can cause problems with your mood, relationships and overall health too, and can even impact your life expectancy.

The good news is, testosterone deficiency is treatable. Long term treatment with testosterone therapy can help get you back on track.

What are the signs and symptoms of testosterone deficiency?

There are common symptoms of testosterone deficiency, although it affects different people in many different ways. Review your symptoms using the Ageing Males’ Symptoms (AMS) questionnaire.

What are the causes and risks?

There are two main causes of testosterone deficiency in men, known as primary hypogonadism (when testosterone deficiency is caused by a problem with your testicles) and secondary hypogonadism (when testosterone deficiency is caused by a signalling problem in your brain).3

The following risk factors mean that you may be more likely to develop testosterone deficiency. These include:3

  • Chronic illness
  • Cancer and cancer treatments
  • Ageing
  • Obesity
  • Type 2 diabetes
  • Metabolic syndrome

Find out more about the causes of testosterone deficiency and risk factors.

How will it affect my life?

Testosterone deficiency may impact many areas of your life, with symptoms including:3

  • Low mood, low energy levels and fatigue
  • Problems with erections, sex drive and libido
  • Depressed mood and low satisfaction with life
  • Lack of motivation, initiative and self-confidence
  • Low muscle mass, weak bones and high body fat

How do I apply Testogel® 16.2 mg/g gel?

Always use this medicine exactly as your doctor has told you. Check with your doctor or pharmacist if you are not sure.

3 simple steps to follow each day:1


Your doctor will tell you how many depressions of the plunger to make to get the correct dose of gel for you.

  • Apply the gel at the same time every morning, onto clean, dry, healthy skin. Apply as a thin layer on both shoulders and upper arms
  • Leave to dry – Testogel® 16.2 mg/g gel dries within 3–5 minutes
  • DO NOT apply to the upper chest, genitals or abdomen

Please note, this product contains alcohol (ethanol 96%) and is flammable until dry.

Wash your hands

  • With soap and water, immediately after applying gel
  • Wait at least 2 hours after gel application before you bathe, shower or swim

Cover up

  • After the application area dries it should be covered with clothing
  • If someone else comes into contact with the application site, they should wash the affected area with soap and water as soon as possible

What additional precautions should I take?

Limiting transfer risk is very important with Testogel® 16.2 mg/g gel. During close and relatively long periods of skin contact testosterone may be transferred to another person unless you cover the treated area. This could cause the other person to show the signs of increased testosterone. Remember to take precautions when using Testogel® 16.2 mg/g gel.

In the following circumstances, please talk to your doctor straightaway:

  • You have an active desire to have children
  • You have chronic heart failure
  • You have a haematocrit blood test with a result >54%

Are there any side effects with Testogel® 16.2 mg/g gel?

Like all medicines, Testogel® 16.2 mg/g gel can cause side effects, although not everybody gets them. Please read the package leaflet that comes with your medicine for a full list of side effects. Common side effects that may affect up to 1 in 10 people:1

Testogel® 16.2 mg/g gel may cause changes to your mood including:1

  • Mood swings, anger or aggression
  • Impatience
  • Sleeplessness
  • Abnormal dreams
  • Increased sex drive

Testogel® 16.2 mg/g gel may cause skin reactions including:1

  • Acne
  • Hair loss
  • Dry skin
  • Skin irritation
  • Hair colour changes
  • Rash
  • Sensitive skin

Other common side effects include increase in red blood cell count, haematocrit (percentage of red blood cells in blood) and haemoglobin (the component of red blood cells that carries oxygen), identified by periodic blood tests. Changes to the prostate gland (including increased blood levels of a protein called prostate specific antigen (PSA) that is produced by the prostate).1

Why do I need to apply it every day?

Testosterone deficiency requires ongoing treatment and so Testogel® 16.2 mg/g gel should be used daily, as prescribed by your doctor, until they advise you to stop. Regular application of Testogel® 16.2 mg/g gel is required in order to maintain steady levels of testosterone, within the healthy range, in your blood. If you stop applying Testogel® 16.2 mg/g gel too early, your testosterone levels may fall back to deficient levels, and the symptoms you used to experience could return.1

What if I miss a dose?

Do not apply a double dose to make up for a forgotten individual dose. Apply your next dose at the usual time.

What if someone else is exposed to Testogel® 16.2 mg/g gel?

Don’t worry, tell them to wash the area that may have been affected immediately with soap and water. Report any signs of testosterone exposure to their doctor. Acne, or changes in the growth or pattern of hair on their body or face are all signs that they may have been exposed to testosterone.1

How will it help me if I have diabetes or if I am obese?

Testosterone therapy for men with testosterone deficiency can help with obesity and some aspects of type 2 diabetes. This is because testosterone positively influences how fat is distributed across your body by promoting lean muscle gain and reducing fat mass.

When used properly and over time, testosterone therapy can help reduce your waist circumference and increase muscle strength, as well as reduce insulin resistance.4 It’s important to speak to your doctor if you are obese or type 2 diabetic about what you can expect from your testosterone therapy. If you have diabetes and use insulin to control your blood sugar levels, testosterone treatment may affect your response to insulin and your anti-diabetics medication might need adjustment by your doctor.

Who should not use Testogel® 16.2 mg/g gel?

Do not use Testogel® 16.2 mg/g gel if:1,3

  • You have or are suspected of having prostate cancer
  • You have or are suspected of having breast cancer
  • You are allergic to testosterone or any of the other ingredients of this medicine

Also you should not take Testogel® 16.2 mg/g under the following circumstances:

  • You have an active desire to have children
  • You have chronic heart failure
  • You have a haematocrit blood test with a result >54%

Always inform your doctor of any pre-existing conditions you have.

For full information about cautions for use of Testogel® 16.2 mg/g gel please read the patient information leaflet.

How long until treatment takes effect?

Some of the symptoms of testosterone deficiency, like changes in your libido/sex drive, can improve after just a few weeks of testosterone therapy.

The maximum effect of testosterone therapy on symptoms is normally seen after 6 months to 2 years.4

See how long it can take for testosterone therapy to improve the symptoms of testosterone deficiency.

What if I can’t see any improvement?

Be patient. A lot of the symptoms of testosterone deficiency do not go away overnight. Regular, consistent application of your treatment is key to help your symptoms improve.

Testosterone therapy can improve the symptoms of testosterone deficiency over time.

You might be experiencing lots of little changes in your overall health that are hard to notice until they are all put together. Try tracking your symptoms over time using a clinically validated questionnaire, to help you see small changes.

If you don’t see any changes in your symptoms after 6 months of consistent treatment, it’s best to speak to your doctor.

What is testosterone?

Testosterone is a hormone that is important for maintaining your physical and mental health. It is produced mostly in the testicles, but also by your adrenal glands (organs above the kidneys that produce hormones).

Take a look at understanding testosterone to learn more about the role that testosterone has in helping you to stay well.

Why is testosterone important?

Testosterone is essential for developing and maintaining characteristics in men such as:3

  • Sex drive and sexual function
  • Muscle mass and strength
  • Bone strength
  • Mood and energy levels

BHUK/2020/025. April 2021.


  1. Testogel® 16.2 mg/g gel – Summary of Product Characteristics (SmPC) – (emc). Accessed April 2021.
  2. UK Government. Hand luggage restrictions at UK airports. Available at: Accessed April 2021.
  3. Hackett G, Kirby M, Edwards D, et al. British Society for Sexual Medicine Guidelines on Adult Testosterone Deficiency, With Statements for UK Practice. J Sex Med. 2017;14(12):1504–1523.
  4. Saad F, Aversa A, Isidori AM, et al. Onset of effects of testosterone treatment and time span until maximum effects are achieved. Eur J Endocrinol. 2011;165(5):675–685.
  5. Testogel® 16.2 mg/g gel – Patient Information Leaflet (PIL) – Accessed April 2021.

BHUK/2020/025. April 2021.