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Sexual health5 minute read

Sildenafil vs. Tadalafil: Choosing the Right ED Treatment

Written by Hi Doctor editorial teamPublished 1 February 2026

Considering Sildenafil or Tadalafil for ED? Get a prescription from an EU-licensed doctor online. Hi-Doctor offers a €35 consultation, with your electronic prescription issued in under 24 hours, valid at any EU pharmacy.

Sildenafil vs. Tadalafil: Choosing the Right ED Treatment — Sildenafilo 50 mg comprimidos and tadalafilo 5 mg comprimidos
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DIRECT ANSWER

An online consultation lets a doctor licensed in Spain review your case and, if appropriate, issue a prescription in Spain; 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.

Doctors licensed in Spain

Every case is reviewed by a doctor licensed in Spain.

Issued in Spain

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

Struggling with erectile dysfunction and looking for a Sildenafil or Tadalafil prescription online in the EU? You can get these medications through an EU-licensed doctor without an in-person clinic visit. Hi-Doctor connects you with qualified medical professionals who review your case. The online consultation costs just €35, and if appropriate, your electronic prescription is issued in under 24 hours, valid at ANY EU pharmacy.

How it works: get your Sildenafil or Tadalafil prescription in 4 steps

  1. Fill the 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.

Who qualifies for Sildenafil or Tadalafil

When you complete your medical questionnaire, an EU-licensed doctor assesses your health profile to determine if Sildenafil or Tadalafil is a safe and appropriate treatment for you. Doctors look for specific criteria, including your medical history, current medications, and overall health. Generally, you must be an adult male experiencing ED. Certain conditions, such as severe heart problems, recent stroke or heart attack, low blood pressure, or specific eye conditions, may contraindicate the use of these medications. Your doctor will ensure that the treatment aligns with your health needs and poses no significant risks.

What Sildenafil and Tadalafil actually do (and doesn't do)

Both Sildenafil (Viagra) and Tadalafil (Cialis) are PDE5 inhibitors. They work by increasing blood flow to the penis during sexual stimulation, helping you achieve and maintain an erection. They do not cause an erection on their own; sexual stimulation is still required. Sildenafil typically works within 30-60 minutes and lasts for about 4-6 hours. Tadalafil has a longer duration, lasting up to 36 hours, offering more spontaneity. Neither medication cures ED, but they effectively manage its symptoms. They do not increase sex drive or protect against sexually transmitted infections.

Side effects and when to stop

Like all medications, Sildenafil and Tadalafil can cause side effects. Common side effects include headache, flushing, nasal congestion, and indigestion. Sildenafil can sometimes cause temporary visual disturbances. Tadalafil may lead to back pain or muscle aches due to its longer half-life. More serious, but rare, side effects include sudden vision loss, sudden hearing loss, or an erection lasting longer than 4 hours (priapism). If you experience any severe or prolonged side effects, stop the medication immediately and seek urgent medical attention. Your doctor will discuss all potential risks with you before prescribing.

Why Hi-Doctor vs. walking into a clinic

Hi-Doctor offers a modern, discreet, and efficient alternative to traditional clinic visits for your Sildenafil or Tadalafil prescription. Instead of waiting weeks for an appointment, then travelling and sitting in a waiting room, you can complete your consultation privately from your phone within minutes. Our flat €35 consultation fee is transparent, unlike variable private clinic costs. Everything happens within your secure, RGPD-compliant in-app chat – no awkward reception desk conversations. Over 50,000 patients trust us, reflected in our 4.8 Trustpilot rating. Get your electronic prescription in under 24 hours, ready for any EU pharmacy, with complete privacy and convenience.

COMMON QUESTIONS

Frequently asked questions

Yes, it is legal to obtain Sildenafil or Tadalafil online in the EU through licensed telemedicine platforms like Hi-Doctor, provided an EU-licensed doctor reviews your case and issues a valid electronic prescription.

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