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Sexual health6 minute read

Erectile Dysfunction Medication: Factors Influencing Success

Written by Hi Doctor editorial teamPublished 1 February 2026

Struggling with erectile dysfunction? Get an online prescription for ED medication like Viagra or Cialis from an EU-licensed doctor. Hi-Doctor offers a €35 consultation, and if approved, your valid electronic prescription is issued in.

Erectile Dysfunction Medication: Factors Influencing Success —
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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.

Erectile Dysfunction Medication: Factors Influencing Success

Looking to get an erectile dysfunction medication prescription online in the EU? You can. Hi-Doctor connects you with EU-licensed doctors who review your case privately. If appropriate, you receive a valid electronic prescription in under 24 hours. The consultation costs just €35, and your prescription is valid at any pharmacy across the EU. Plus, there's no risk: if the doctor determines treatment is not appropriate, your €35 fee is refunded automatically.

How it works: get your ED medication prescription in 4 steps

  1. Fill the online medical questionnaire (2–3 minutes) and pay the €35 consultation fee.
  2. A licensed EU doctor reviews your case in private. If the doctor determines the treatment is not appropriate, your €35 is refunded automatically, so there is no risk.
  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 the medication. This valid electronic prescription, issued under the Spanish system, is recognised EU-wide under cross-border prescription directive 2011/24/EU.

Who qualifies for ED medication

EU-licensed doctors review each case individually to ensure ED medication is safe and effective for you. Here’s what they consider:

  • Your medical history: Conditions like heart disease, uncontrolled high blood pressure, or a recent stroke or heart attack may make ED medication unsuitable.
  • Current medications: Certain drugs, especially nitrates, can interact dangerously with ED medications. Always list all your current prescriptions.
  • Severity and cause of ED: The doctor assesses if PDE5 inhibitors (like sildenafil or tadalafil) are the right approach for your specific situation.
  • Overall health: Your general health status helps determine the most appropriate medication and dosage.

The doctor acts as your gatekeeper, ensuring your safety and the effectiveness of the treatment.

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: €35 online consultation, reply within 24 h, full refund if the doctor decides the treatment isn't appropriate.

Discover Hi-Doctor →

What ED medication actually does (and doesn't do)

Erectile Dysfunction (ED) medications, primarily PDE5 inhibitors like sildenafil (Viagra) and tadalafil (Cialis), work by increasing blood flow to the penis. This makes it easier to achieve and maintain an erection when you are sexually stimulated. They do not cause an instant erection without stimulation, nor do they increase libido or sexual desire. They simply help your body respond more effectively to natural arousal.

  • Sildenafil (Viagra): Typically works within 30-60 minutes and lasts for about 4-5 hours.
  • Tadalafil (Cialis): Can take effect in 30-45 minutes and is known for its longer duration, lasting up to 36 hours.
  • Vardenafil (Levitra) & Avanafil (Spedra): Similar to sildenafil, with avanafil often having a faster onset.

Realistic expectations are key. These medications improve erectile function but do not necessarily restore it to a previous state, nor do they treat underlying causes of ED.

Side effects and when to stop

Like all medications, ED drugs can have side effects. Common ones include headache, flushing, nasal congestion, and mild visual disturbances. These are usually temporary and mild. However, you should be aware of more serious, though rare, side effects:

  • Sudden vision or hearing loss: Seek immediate medical attention.
  • Priapism: An erection lasting more than four hours. This is a medical emergency.
  • Chest pain or severe dizziness: Stop use and seek urgent medical advice.

Always discuss potential side effects with your doctor. If you experience any severe or concerning symptoms, stop taking the medication and consult a medical professional immediately. Your Hi-Doctor account provides a private, RGPD-compliant chat for ongoing communication with your doctor.

Why Hi-Doctor vs. walking into a clinic

Getting your ED medication through Hi-Doctor offers significant advantages over traditional in-person clinic visits:

  • Speed: Receive your prescription in under 24 hours, often much faster. Compare this to waiting weeks for a clinic appointment.
  • Price: A flat €35 consultation fee. If the doctor doesn't approve treatment, you get your money back. Private clinic fees can be much higher and often non-refundable.
  • Privacy: Everything happens securely within your Hi-Doctor account. No waiting rooms, no reception desk conversations, no in-person discussions about sensitive health matters.
  • Convenience: Complete your consultation from your phone or computer, anywhere in the EU. No travel, no time off work.
  • Trust: Over 50,000 patients served with a 4.8 Trustpilot rating. Our EU-licensed doctors review every case individually, ensuring safe and appropriate care.

Hi-Doctor streamlines the process, making it discreet, efficient, and patient-focused.

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 €35 consultation fee is refunded automatically.

Register my interest · €35

COMMON QUESTIONS

Frequently asked questions

If the doctor determines that ED medication is not appropriate for you, your €35 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