Testosterone / Treatment Information

Tostran® Gel - Treatment Information

An overview of Tostran, a prescription testosterone gel used in testosterone replacement therapy (TRT) when clinically appropriate.
  • Daily topical testosterone gel
  • Metered-dose pump for flexible dosing
  • Prescription-only medicine — requires blood testing and clinical assessment before it can be considered

This is an information page only. Tostran cannot be requested or purchased directly. Testosterone replacement therapy is only considered after blood testing, symptom assessment, and a full clinical review. If you think your testosterone levels may be low, the first step is a testosterone test.

Check Your Testosterone

IMPORTANT CLINICAL NOTICE

Vivamen does not initiate testosterone replacement therapy (TRT) directly from this page.

Tostran is only prescribed following appropriate blood testing, assessment of symptoms, and clinician review. If you have not already had a comprehensive hormone and safety assessment, the consultation process will first guide you towards testing rather than treatment.

Although no prescription is needed, you’ll be asked a few questions before ordering so a pharmacist can check that sildenafil is safe and suitable for you. Supply is not guaranteed.

OVERVIEW

Tostran® is a prescription-only testosterone gel used as part of testosterone replacement therapy for men with confirmed testosterone deficiency.

It contains testosterone in a fast-drying gel that is applied daily to the skin. Tostran is supplied in a metered-dose pump, allowing clinicians to adjust dosing more gradually where appropriate.

As with all testosterone treatments, Tostran is not suitable for everyone and is only prescribed following a full clinical assessment — including blood testing, review of symptoms, and evaluation of safety markers.

This page is provided for informational purposes so that men researching TRT can understand what Tostran is, how it works, and what to expect if it is ever prescribed.

Learn more about Tostran

When Tostran may be prescribed

Tostran may be prescribed when all of the following apply:

  • Persistent symptoms consistent with testosterone deficiency
  • Blood tests showing low or borderline testosterone on appropriate testing
  • Additional hormone and safety markers have been reviewed
  • A clinician has assessed risks, benefits, and alternatives
  • Informed consent has been obtained

Many men with low testosterone levels do not require TRT. A low result alone does not determine whether treatment is appropriate.

Tostran delivers testosterone through the skin into the bloodstream.

Once absorbed, testosterone supports normal male physiological functions such as:

  • Sexual function
  • Energy levels
  • Mood regulation
  • Muscle maintenance

Daily application helps maintain testosterone levels within the normal physiological range. The pump-based format allows for dose adjustments based on blood test results and clinical response.

When prescribed, Tostran is typically:

  • Applied once daily, usually in the morning
  • Applied to clean, dry skin on the abdomen or inner thighs
  • Delivered via a metered-dose pump

After application:

  • Allow the gel to dry fully before dressing
  • Wash hands thoroughly after use
  • Avoid skin contact with others at the application site until washed

Dose changes are made only following blood test review and clinician assessment.

Testosterone replacement therapy requires regular monitoring. This typically includes:

  • Repeat blood tests to assess testosterone levels
  • Monitoring of blood count, PSA, and other safety markers
  • Ongoing review of symptoms and potential side effects

Treatment may be adjusted, paused, or stopped depending on clinical findings.

Like all medicines, Tostran can cause side effects, although not everyone experiences them.
Possible side effects include
  • Skin irritation at the application site
  • Increased red blood cell count
  • Fluid retention
  • Changes in mood or libido

Testosterone can transfer to others through skin contact if precautions are not followed. This is particularly important around women and children. Full safety information is provided before any treatment begins.

Who should not use Tostran

Tostran is not suitable for men who:

  • Have or are suspected of having prostate cancer or breast cancer
  • Have severe heart, liver, or kidney problems
  • Have an allergy to testosterone or any of the gel's ingredients
  • Are under 18 years of age
Other medications and health conditions may also affect suitability. These are checked during the clinical assessment process.

Patient Information Leaflet

For full details on usage, precautions, and side effects, the official patient information leaflet is provided with all prescribed supplies of Tostran.
Tostran patient information leaflet

Author Information

All of our medication and condition content is written by UK qualified pharmacists and doctors.

Authored by

Amit Raj

Superintendent Pharmacist

Reviewed by

XXXXXXXXXX

Medical Advisor / Pharmacist or Doctor
GPhC Number: 225377

Review Date:

XX March 2026

Next Review:

XX March 2027

Published on:

XX March 2026

Last Update:

XX March 2026

FREQUENTLY ASKED QUESTIONS

No. This page is for information only. Tostran is a prescription-only medicine and can only be prescribed after blood testing and a full clinical review. The first step is always a testosterone test.

Trust and Regulation

This page is for information only

Testosterone treatment requires blood testing first

All care is guided by UK-registered clinicians

Want to check your testosterone?

If you're experiencing symptoms like low energy, reduced libido, or changes in mood, testing is the best place to start — not treatment.

Our home test kit is simple, comfortable, and reviewed by UK clinicians. Take things from there, with no pressure and no assumptions.

Check Your Testosterone
  • UK Clinicians
  • Regulated Pharmacy
  • Discreet Delivery