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Viagra Not Working? Understanding Erectile Dysfunction Non-Responders

Struggling with erectile dysfunction and finding Viagra isn't working for you? Get an online consultation with an EU-licensed doctor for just €25. Receive your electronic prescription within 24 hours, valid at any EU pharmacy.

6 April 2026
Viagra Not Working? Understanding Erectile Dysfunction Non-Responders — Sildenafilo 50 mg comprimidos

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.

Less than 4 hours on average

Prescription issued in less than 4 hours on average 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.

In this article

Are you looking for a Viagra prescription online in Spain, Portugal, or any other EU country? If you've tried Viagra and it hasn't delivered the desired results, you're not alone. Many men experience circumstances where Viagra doesn't work as expected. The good news is, you can get a professional assessment and potential solutions fast. An EU-licensed doctor can review your case online. If appropriate, you'll receive a REMPE electronic prescription in under 24 hours, valid at ANY EU pharmacy. The consultation is just €25.

How it works — get your Viagra prescription in 4 steps

  1. Fill the online medical questionnaire (2–3 minutes). Provide your health details securely through our app.
  2. A licensed EU doctor reviews your case in private. Our doctors are experts in sexual health and assess your information carefully.
  3. If appropriate, you receive a REMPE electronic prescription within 24 hours. This prescription is delivered to your private account and by email.
  4. Pick up your medication at any EU pharmacy. Your prescription is valid across the entire European Union, from France to Germany to Italy.

Who qualifies for Viagra

Our EU-licensed doctors look for several factors to determine if Viagra (sildenafil) is appropriate for you. They will assess your medical history, current health conditions, and any other medications you are taking. Generally, Viagra is prescribed for men experiencing erectile dysfunction. However, certain conditions or medications can make Viagra unsafe or ineffective. For instance, if you have severe heart problems, uncontrolled high or low blood pressure, or are taking nitrate medications, Viagra may be contraindicated. The doctor evaluates your individual case to ensure treatment safety and suitability.

What Viagra actually does (and doesn't do)

Viagra, containing sildenafil, works by increasing blood flow to the penis, helping you achieve and maintain an erection when you are sexually aroused. It is a phosphodiesterase-5 (PDE5) inhibitor. This means it helps relax the smooth muscles in the penis, allowing more blood to flow in. It does not create an erection out of nowhere; sexual stimulation is still required for it to be effective. Viagra typically starts working within 30 to 60 minutes and its effects last for about 4 hours. It's important to have realistic expectations: Viagra helps with the physical mechanism of erection, but it cannot address underlying psychological issues or lack of sexual desire on its own.

Side effects and when to stop

Like all medications, Viagra can cause side effects. Common side effects include headache, flushing, upset stomach, nasal congestion, vision changes (e.g., blurred vision, blue tint), and dizziness. These are usually mild and temporary. More serious side effects are rare but can include a sudden decrease or loss of vision or hearing, or an erection that lasts longer than 4 hours (priapism). If you experience any severe or prolonged side effects, or if your erection lasts longer than 4 hours, seek immediate medical attention. Always follow your doctor's instructions and stop taking Viagra if you experience concerning symptoms.

Why Hi-Doctor vs. walking into a clinic

Getting your Viagra prescription online through Hi-Doctor offers unparalleled benefits compared to traditional clinic visits:

  • Speed: Receive your prescription within 24 hours, often much faster, versus waiting weeks for a clinic appointment.
  • Price: A flat €25 for your online consultation, with no hidden fees. Private clinic fees can vary significantly.
  • Privacy: Everything happens securely within our RGPD-compliant app. No awkward reception desk conversations or waiting rooms.
  • Convenience: Consult with an EU-licensed doctor from anywhere, using your phone or computer. No travel, no parking, no time off work.

We've served over 50,000 patients with a 4.8 Trustpilot rating, providing trusted, efficient, and private healthcare solutions.

COMMON QUESTIONS

Frequently asked questions

Yes, it is legal to get a Viagra prescription online in Spain and across the EU, provided it's issued by an EU-licensed doctor after a proper medical review, like at Hi-Doctor. Your electronic prescription is then valid at any EU pharmacy.

Licensed EU doctors
Doctor review in less than 2 hours on average
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