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Hair growth6 minute read

DHT Blockers: How They Prevent Hair Loss and Which Ones Work

Written by Hi Doctor editorial teamPublished 6 April 2026

Struggling with hair loss? Discover how DHT blockers like finasteride and dutasteride can help. Get an online consultation with an EU-licensed doctor for a prescription in under 24 hours, valid at any EU pharmacy.

DHT Blockers: How They Prevent Hair Loss and Which Ones Work —
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DIRECT ANSWER

An online consultation lets an EU-licensed doctor review your case and, if appropriate, issue an electronic prescription; each pharmacy decides whether it can dispense it.

Doctor reply in under 2 hours

Average doctor reply under 2 hours; at night and on public holidays it can take longer, always within 24 hours. A prescription only if appropriate.

EU-licensed doctors

Every case is reviewed by an EU-licensed doctor.

Electronic prescription

Each pharmacy decides whether it can dispense an approved prescription; some do not accept PDF prescriptions.

DHT Blockers: How They Prevent Hair Loss and Which Ones Work

Looking for a prescription for DHT blockers like finasteride or dutasteride online in the EU? You've come to the right place. Hi-Doctor connects you with EU-licensed doctors who can assess your suitability for hair loss treatment. If appropriate, you receive a valid electronic prescription in under 24 hours, accepted at any pharmacy across the EU. The online consultation is just €45 every 90 days (cancel anytime) or €35 one-off, and if the doctor determines the treatment is not right for you, your fee is fully refunded — no risk.

How it works: get your DHT blocker prescription in 4 steps

  1. Fill out a brief online medical questionnaire (2–3 minutes) and pay the consultation fee of €45 every 90 days or €35 one-off.
  2. A licensed EU doctor reviews your case in private. If the doctor decides the treatment is not appropriate, your payment is refunded automatically — you pay nothing.
  3. If approved, you receive a valid electronic prescription (PDF file) in your Hi-Doctor account and by email within 24 hours.
  4. Print the PDF or show it on your phone and present it at any pharmacy in the EU to collect your medication.

Who qualifies for DHT blockers

When you complete your medical questionnaire, the doctor looks for specific criteria to ensure DHT blockers are safe and effective for you. Generally, DHT blockers like finasteride and dutasteride are prescribed for men experiencing androgenetic alopecia (male pattern baldness). These medications are typically not recommended for women, especially those who are pregnant or may become pregnant, due to potential risks. The doctor will also consider your medical history, current medications, and any pre-existing conditions to determine if finasteride or dutasteride is appropriate for your specific case.

What DHT blockers actually do (and don't do)

DHT blockers work by targeting dihydrotestosterone (DHT), a hormone that plays a key role in hair loss. Specifically, they inhibit the enzyme 5-alpha-reductase, which converts testosterone into DHT. By lowering DHT levels in the scalp, these medications can:

Don't see your condition on Hi-Doctor yet?

Hi-Doctor is continuously onboarding EU-licensed specialists across new conditions. Register your interest and we'll notify you the moment a doctor is available for your case. In the meantime, see how the service works: online consultation for €45 every 90 days or €35 one-off, reply within 24 h, full refund if the doctor decides the treatment isn't appropriate.

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  • Slow down or stop hair loss: They prevent DHT from shrinking your hair follicles.
  • Promote regrowth: For some, they can lead to new hair growth, often appearing as thicker, healthier strands.
  • Improve hair density: Existing hair may become thicker and stronger.

It's important to understand that DHT blockers do not cure baldness permanently. They manage the condition. You need to take them consistently to maintain results. Visible improvements usually take 3-6 months to appear, with full effects often seen after 12 months of continuous use. They are most effective for mild to moderate hair loss and may not restore hair in areas that have been completely bald for a long time.

Side effects and when to stop

Like all medications, DHT blockers can have side effects. For finasteride and dutasteride, these can include sexual side effects such as decreased libido, erectile dysfunction, and ejaculatory problems in a small percentage of men. These are often reversible upon stopping the medication. Other potential side effects include breast tenderness or enlargement. If you experience any severe or persistent side effects, or if you are concerned about any symptoms, you should stop the medication and consult a doctor immediately.

Why Hi-Doctor vs. walking into a clinic

Choosing Hi-Doctor for your DHT blocker prescription offers significant advantages over traditional clinic visits:

  • Speed: Get your prescription in under 24 hours versus waiting weeks for an in-person appointment.
  • Price: A consultation fee of €45 every 90 days or €35 one-off, no hidden costs, compared to variable and often higher private clinic fees.
  • Privacy: Everything happens securely within our app, maintaining your discretion, unlike a public reception desk.
  • Convenience: Access an EU-licensed doctor from your phone, without travel or time off work.

With over 50,000 patients served and a 4.8 Trustpilot rating, Hi-Doctor provides a trusted, efficient, and compliant way to access the care you need. Our system is fully RGPD-compliant, ensuring your data is always private and secure.

Your interest guides which specialists we add next.

If your treatment isn't yet among Hi-Doctor's covered specialties, register at hi-doctor.ai so a doctor can notify you the moment we can handle your case. Our EU-licensed doctors issue electronic prescriptions as a PDF valid at any EU pharmacy, and if the doctor decides the treatment isn't appropriate, the consultation fee is refunded automatically.

Register my interest · €45 every 90 days or €35 one-off

COMMON QUESTIONS

Frequently asked questions

If the doctor determines that DHT blockers are not appropriate for you, your consultation fee is refunded automatically. You pay nothing if the treatment isn't approved.

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Written by the Hi Doctor editorial team. General information, not individually reviewed by a doctor.

If the doctor does not approve treatment, we refund the full amount. Every consultation is fully refundable. How refunds work