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Sexual health5 minute read

Tadalafil 5mg vs 20mg: Daily Use vs On-Demand for ED

Written by Hi Doctor editorial teamPublished 6 April 2026

Looking for Tadalafil online in the EU? Consult an EU-licensed doctor online for just €35 — prescription if appropriate. Prescription issued in under 24 hours, valid at any EU pharmacy.

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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.

Tadalafil 5mg vs 20mg: Daily Use vs On-Demand for ED

Looking for a Tadalafil prescription online in the EU? You've come to the right place. Hi-Doctor connects you with EU-licensed doctors who can assess your needs for Tadalafil 5mg or 20mg. Our online consultation simplifies the process: a medical review, a prescription if appropriate, and you’re ready to pick up your medication. The entire process costs just €25, and if the doctor finds treatment appropriate, your electronic prescription is issued in under 24 hours. It's valid at any pharmacy across the EU, from Spain to Germany.

How it works: get your Tadalafil prescription in 4 steps

  1. Fill out a short, online medical questionnaire (2–3 minutes).
  2. A licensed EU doctor reviews your case in private.
  3. If the doctor finds treatment appropriate, you receive a valid electronic prescription within 24 hours.
  4. Pick up your medication at any EU pharmacy with your valid prescription.

Who qualifies for Tadalafil

Our EU-licensed doctors individually review every case to ensure Tadalafil is safe and appropriate for you. They assess your medical history, current health status, and any other medications you are taking. Key factors include:

  • Your general cardiovascular health.
  • Any history of heart conditions, stroke, or severe liver/kidney problems.
  • Blood pressure levels, especially if you are taking nitrates for chest pain.
  • Whether you have a history of priapism (prolonged erection) or Peyronie's disease.
  • Other medications that may interact with Tadalafil.

It's crucial to provide accurate and complete information in your medical questionnaire. This helps the doctor make an informed decision and ensures your safety.

A private sexual-health consultation.

An EU-licensed doctor reviews your case through a private chat inside your account, no waiting room, no WhatsApp. €35, reply within 24 h.

Start private consultation →

What Tadalafil actually does (and doesn't do)

Tadalafil is a PDE5 inhibitor. It works by increasing blood flow to the penis when you are sexually aroused, making it easier to achieve and maintain an erection. It doesn't create an erection automatically; sexual stimulation is still required. Tadalafil is known for its long-lasting effects, earning it the nickname 'the weekend pill', as it can remain effective for up to 36 hours.

Tadalafil 5mg is often prescribed for daily use, providing a continuous low dose that allows for spontaneity. Tadalafil 20mg is typically for on-demand use, taken before sexual activity. It does not protect against sexually transmitted infections (STIs) and is not a contraceptive.

Side effects and when to stop

Like all medications, Tadalafil can cause side effects. Common ones include headache, flushing, nasal congestion, muscle aches, and indigestion. These are usually mild and temporary. More serious, but rare, side effects can include sudden vision loss, sudden hearing decrease or loss, or an erection lasting longer than 4 hours (priapism). If you experience any of these severe side effects, seek immediate medical attention.

You should stop taking Tadalafil and consult a doctor if you experience chest pain, allergic reactions (rash, swelling of the face, lips, tongue, or throat), or any other concerning symptoms. Always discuss any side effects or concerns with your doctor.

Why Hi-Doctor vs. walking into a clinic

Getting a Tadalafil prescription through Hi-Doctor offers a modern, patient-centric approach that traditional clinics often can't match:

  • Speed: Get your electronic prescription in under 24 hours, compared to weeks of waiting for a clinic appointment.
  • Price: A flat €35 for the online consultation, with no hidden fees or variable private-clinic charges.
  • Privacy: Everything happens within your private, RGPD-compliant, auditable chat in the app. No waiting rooms, no reception desks, no awkward conversations.
  • Convenience: Conduct your consultation from anywhere, using your phone or computer. No travel to a city-centre clinic.
  • Experience: Join over 50,000 satisfied patients who trust Hi-Doctor, reflected in our 4.8 Trustpilot rating.

A medical conversation: private, auditable.

Take the questionnaire. A licensed doctor evaluates your case and decides whether a treatment is appropriate. If so, the valid electronic prescription lands in your account within 24 hours. Everything is recorded in your private history.

Start consultation · €35

COMMON QUESTIONS

Frequently asked questions

Yes, it is legal to get a prescription for Tadalafil online in the EU from a licensed doctor. Hi-Doctor connects you with EU-licensed medical professionals who provide legitimate, legally valid prescriptions after a thorough online consultation.

Own your health

Doctor-reviewed guides and new treatments. At most two emails a month.

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