I've been taking the medication for over a year now and it works well!

Restore your testosterone
€79,99
Discreet, medically based solutions for a fulfilling life.
No physical appointments
Discreetly packaged
Treating erectile dysfunction could be life-changing
No physical appointments
Our Dutch doctors will help you get the treatment you need online - start right from home
Medical support
You have free, 24/7 access to your Dutch doctor if you have any questions or adjustments to your treatment.
Proven effective
More than 90% of men are successful with the EMA-approved treatments that Fellos offers.
Discreet and fast
Our pharmacy delivers your treatment discreetly packaged and directly to your home.
Low testosterone can have a lot of impact in various areas.
Low testosterone has an impact on:
Impact on:
What you can expect from a treatment of low testosterone

Start to feel the effects
After 6 to 8 weeks, your testosterone levels will stabilize and the initial benefits, such as more energy, a better mood and a stronger libido, will really feel like your new normal.

Visible physical progress
At this stage, you may notice the first changes, such as improved muscle mass, fat distribution, mood stability, and sexual function. The full effects of these improvements last well beyond the first six months.

Transformative results
With continued treatment and a healthy lifestyle, you can look forward to lasting results: a better metabolism, stronger bones and a long-term reduction in the symptoms of low testosterone levels. TRT isn't just about feeling and looking better now, but about thriving in the long run.
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Test and treat your testosterone levels. Online, secure and discreet.
Start your treatment within a few days.
Schedule a blood test
Analyze your values. Do you have low testosterone? This is followed by a second blood test.
Get insight into your testosterone
You'll get a comprehensive insight into your testosterone levels. We also share treatment options, both lifestyle and medical.
Start treatment
Your treatment will be delivered free of charge in a blank box, without mentioning the contents.
How do you get started with testosterone treatment?

Testosterone test
€79.99
Start with a simple lab test that measures your total and free testosterone levels. The results will give you a clear picture of your testosterone levels and provide specific guidance and advice on how you might increase them if necessary.
- Total testosterone
- Free testosterone
- Includes a report validated by experts.

Further investigation if levels are low
€99.99
If your total testosterone level is below 12 nmol/L or your free testosterone level is below 70 pg/mL, further tests will be carried out. These follow-up tests will allow us to confirm your hormone levels and, at the same time, measure your PSA (prostate-specific antigen) and your haematocrit (blood thickness).
This ensures that you can start any treatment safely and responsibly.
- Validation of total and free testosterone
- PSA (prostate-specific antigen)
- Haematocrit (blood viscosity)
- Reviewed by experts

Start your treatment
€49.99 / month
Our doctor will draw up a personalised treatment plan tailored to your lifestyle. This may include medication and specific lifestyle advice.
Our monthly subscription covers medication, blood tests every six months, follow-up consultations with our doctors, medical reports, ongoing support and free, discreet delivery.
Please note: medication costs may be (partially) subject to your excess. Please bear this in mind.
- Safe and effective treatment
- Discreet and free delivery
- Bear in mind your excess

Monitoring
Regular follow-ups and blood tests are important, as everyone reacts differently to testosterone.
We schedule an initial assessment after 6 weeks of treatment. We also carry out blood tests after 6 and 12 months (included in your subscription), so that your doctor can carefully monitor your progress and any side effects, and optimise your treatment step by step where necessary.
Through your Fellos portal, you can also view your blood and testosterone levels yourself, as well as how they have changed over time.
You are in good company
Men give us a 4.6 out of 5.0
1 in 4 men experience low testosterone.
Our team is here for you. Between the ages of 30-79, 1 in 4 men suffers from low testosterone. In addition, from the age of 40, your testosterone levels decrease significantly year after year. Get insight into your levels and start treatment if necessary.


Everything you need know
What is testosterone?
Testosterone is the most important male sex hormone. It is mainly produced in the testicles and plays a major role in both physical and mental processes. Everyone has testosterone, but men have far more of it than women.
What do you notice about a testosterone deficiency?
In case of a shortage, you can have symptoms such as less sex drive, erection problems, fatigue, less muscle strength, an increase in fat, feelings of depression and difficulty focusing. These complaints often develop gradually.
What can you expect from a treatment?
Both pills are effective. But which one is best for your specific needs is another question. While Sildenafil can take 30 minutes to an hour to take effect and work for 4-5 hours, Tadalafil can work within 30 minutes and last up to 36 hours.
What is the function of testosterone?
Testosterone is important for muscle mass, bone strength, energy levels, libido, erections, mood and concentration, among other things. It also plays a role in the production of sperm and the maintenance of male characteristics.
Fellos is an online health platform for men, where doctor advice and prescription medications can be obtained. Treatments for erection problems, hair loss, premature ejaculation, acne and more. 100% online, easy and discreet.
This is how Fellos works: first fill out our online medical questionnaire. A BIG-registered doctor will then assess your situation and draw up a personal diagnosis with a treatment plan. Once approved, your medication will be delivered discreetly to your home and our medical team will be there for you online. In the unlikely event that you are not suitable for treatment, you will receive the full amount back.
A complete medical intake costs €14.95 and is temporarily FREE with every subscription. This amount includes a complete assessment by a BIG-registered doctor, your personal treatment plan, repeat prescriptions when necessary, and continuous online support from our medical team.
Will you be approved for treatment? Then this only includes the medication costs.
Are you not suitable for treatment? Then you will get the full amount back.
Good and quality care is our priority. That is why Fellos only works with BIG-registered doctors in the Netherlands. Of course, our doctors only take your interests into account, which is why Fellos logically does not work with commissions for prescribing medication.
Fellos works with a partner pharmacy based in the Netherlands. In this way, we always guarantee reliable medication. Our partner pharmacy is Apotheek van Poppel in Wijchen, registered with the KVK under number: 10026120.
Fellos takes the safe handling of personal data very seriously. You can assume that we will handle this discreetly and carefully. You can read all the details in our privacy policy.


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