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Sexual health5 minute read

Erectile Dysfunction Medication: Long-Term Use and Maintenance

Written by Hi Doctor editorial teamPublished 1 February 2026

Looking for a Viagra prescription online in the EU? Hi-Doctor connects you with EU-licensed doctors who can review your case and issue a prescription in under 24 hours if appropriate.

Erectile Dysfunction Medication: Long-Term Use and Maintenance —
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DIRECT ANSWER

An online consultation lets an EU-licensed doctor review your case and, if appropriate, issue a prescription that is valid across the EU.

Doctor reply in under 2 hours

Average doctor reply under 2 hours; prescription within 24 hours if approved.

EU-licensed doctors

Every case is reviewed by a licensed clinician.

Valid across the EU

Approved prescriptions can be used at any EU pharmacy.

Looking for a Viagra prescription online in Spain, Portugal, or any other EU country? You can get a Viagra prescription through an EU-licensed doctor at Hi-Doctor. Our online consultation process is simple, private, and fast. For a flat fee of €35, an EU-licensed doctor reviews your case individually. If treatment is appropriate, you receive a valid electronic prescription in under 24 hours, ready for pickup at any EU pharmacy.

How it works: get your Viagra prescription in 4 steps

  1. Fill out the online medical questionnaire. This takes 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 across the EU.

Who qualifies for Viagra

Our EU-licensed doctors assess your medical history to ensure Viagra is safe and appropriate for you. They look for specific criteria, including:

  • Your overall health: Conditions like heart disease, low blood pressure, or a history of stroke may make Viagra unsuitable.
  • Medications you currently take: Certain drugs, especially nitrates (often for chest pain) and alpha-blockers, can interact dangerously with Viagra. Always provide a full list of your current medications.
  • Allergies: Any known allergies to sildenafil or other ingredients in Viagra.
  • Severity of ED: While Viagra is effective for many, the doctor determines if it's the right first-line treatment for your specific situation.

The doctor's review ensures your safety and the effectiveness of the treatment. If Viagra is not suitable, they will explain why.

What Viagra actually does (and doesn't do)

Viagra (sildenafil) is a phosphodiesterase-5 (PDE5) inhibitor. It works by increasing blood flow to the penis when you are sexually stimulated. This helps you achieve and maintain an erection. It does not create an erection automatically; you still need sexual arousal for it to work. Viagra typically starts working within 30–60 minutes and its effects can last for up to 4 hours.

Viagra is not a cure for erectile dysfunction, nor does it increase libido. It is a treatment to help manage the symptoms of ED. It will not protect you against sexually transmitted infections.

Side effects and when to stop

Like all medications, Viagra can cause side effects. Most are mild and temporary. Common side effects include headache, flushing, nasal congestion, and indigestion. Some men experience visual disturbances, such as a blue tint to vision or increased light sensitivity.

More serious side effects are rare but require immediate medical attention. These include:

  • An erection lasting longer than 4 hours (priapism).
  • Sudden vision loss in one or both eyes.
  • Sudden decrease or loss of hearing.
  • Chest pain.

Always stop taking Viagra and seek immediate medical help if you experience any of these serious side effects. Our doctors provide full guidance on potential side effects and what to look out for.

Why Hi-Doctor vs. walking into a clinic

Getting your Viagra prescription online in the EU through Hi-Doctor offers distinct advantages over traditional clinic visits:

  • Speed: Get your electronic prescription in under 24 hours. A clinic visit can mean weeks of waiting for an appointment.
  • Price: A flat €35 for your online consultation. Private clinic fees can vary widely and often cost much more.
  • Privacy: Everything happens securely inside your private account. No waiting rooms, no reception desks, no uncomfortable conversations in person.
  • Convenience: Complete your consultation from your phone, tablet, or computer, anywhere in the EU. No travel to a city-centre clinic.
  • Trust: Join over 50,000 satisfied patients. We hold a 4.8 Trustpilot rating, reflecting our commitment to patient care and privacy.

Our EU-licensed doctors review every case individually, ensuring you receive appropriate and safe care. Your data is RGPD-compliant and kept private through auditable chat within your account.

COMMON QUESTIONS

Frequently asked questions

Yes, it is legal to obtain a prescription for Viagra online from an EU-licensed doctor. Hi-Doctor connects you with doctors who can issue a valid electronic prescription, accepted at any EU pharmacy.

Dr. Alejandro Infante
General medicine · Reg. 080869277

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All content on this page has been medically reviewed by: Dr. Alejandro Infante, General medicine, on 27 July 2026. Registration: 080869277 View profile

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