Sildenafil Dosages Explained: 25mg vs 50mg vs 100mg
Need a Sildenafil prescription online? Get it fast and legally. Hi-Doctor connects you with an EU-licensed doctor for a €25 online consultation. Prescription issued in under 24 hours, valid at any EU pharmacy.

Sildenafil Dosages Explained: 25mg vs 50mg vs 100mg
Want a Sildenafil prescription online in the EU? You've come to the right place. Hi-Doctor connects you with an EU-licensed doctor who reviews your case individually. If treatment is appropriate, you receive a REMPE electronic prescription within 24 hours. The consultation is just €25, and your prescription is valid at any pharmacy across the EU.
How it works — get your Sildenafil prescription in 4 steps
- Fill out a brief online medical questionnaire (2–3 minutes).
- A licensed EU doctor privately reviews your health information.
- If appropriate, you receive a REMPE electronic prescription in your private account and by email within 24 hours.
- Pick up your Sildenafil at any EU pharmacy (Spain, Portugal, Italy, France, Germany, etc.).
Who qualifies for Sildenafil
Our EU-licensed doctors assess your eligibility for Sildenafil based on your medical history and current health. They look for specific criteria to ensure your safety and treatment effectiveness. Generally, Sildenafil is for adult men experiencing erectile dysfunction (ED).
You may qualify if:
- You have a confirmed diagnosis of erectile dysfunction.
- You do not have severe cardiovascular conditions.
- You are not taking nitrates or alpha-blockers.
- You have no history of significant liver or kidney dysfunction.
The doctor considers your overall health, other medications you take, and any contraindications before issuing a prescription. The goal is to find the safest and most effective dosage for you.
What Sildenafil actually does (and doesn't do)
Sildenafil helps you achieve and maintain an erection when you are sexually stimulated. It belongs to a class of medications called PDE5 inhibitors. Here's how it works:
- Sildenafil increases blood flow to the penis by relaxing blood vessels.
- It enhances the natural process that occurs during sexual arousal.
- It does NOT create an erection on its own; sexual stimulation is still required.
- It does NOT increase libido or sexual desire.
- It does NOT protect against sexually transmitted infections.
You typically take Sildenafil about 30-60 minutes before sexual activity. Its effects can last for up to 4 hours. Remember, Sildenafil is a treatment for erectile dysfunction, not a cure.
Side effects and when to stop
Like all medications, Sildenafil can cause side effects. Most are mild and temporary. Common side effects include headache, flushing, nasal congestion, and mild visual disturbances. These usually subside as your body adjusts.
More serious, but rare, side effects include:
- Sudden decrease or loss of vision or hearing.
- An erection lasting more than 4 hours (priapism) – seek immediate medical attention.
- Chest pain, dizziness, or nausea during sexual activity.
Always inform your doctor if you experience any concerning side effects. If you have a prolonged or painful erection, stop taking Sildenafil and seek emergency medical care immediately. Your safety is paramount.
Why Hi-Doctor vs. walking into a clinic
Choosing Hi-Doctor for your Sildenafil prescription offers significant advantages over traditional clinic visits:
- Speed: Get your prescription in under 24 hours via Hi-Doctor. A clinic appointment can take weeks.
- Price: Our online consultation is a flat €25. Private clinic fees are often much higher and vary widely.
- Privacy: Everything happens securely within your private Hi-Doctor account. No waiting rooms, no awkward conversations at a reception desk. RGPD-compliant and auditable chat ensures your data is protected.
- Convenience: Access an EU-licensed doctor from your phone or computer, anywhere. No need to travel to a city-centre clinic.
- Trust: Over 50,000 patients have trusted Hi-Doctor, reflected in our 4.8 Trustpilot rating.
Experience healthcare designed for the modern patient – efficient, discreet, and patient-focused.
Frequently asked questions
Is it legal to get Sildenafil online in the EU?
Yes, it is legal to get a Sildenafil prescription online in the EU, provided it's issued by an EU-licensed doctor after a proper medical consultation, like the service provided by Hi-Doctor.
How long does the prescription take?
After you complete your medical questionnaire, an EU-licensed doctor reviews your case. If appropriate, your REMPE electronic prescription is issued within 24 hours.
Can I use the prescription at any EU pharmacy?
Yes, the REMPE electronic prescription issued by Hi-Doctor's EU-licensed doctors is valid at any pharmacy in any EU member state.
What happens if the doctor says no?
If the doctor determines that Sildenafil is not appropriate for you, or if they require more information that cannot be gathered online, your consultation fee of €25 is fully refunded.
Is my data private?
Absolutely. Hi-Doctor is fully RGPD-compliant. Your medical information and personal data are kept strictly confidential within your private account and are auditable. There's no WhatsApp, no SMS, just secure in-app communication.
How much does it cost?
The online consultation with an EU-licensed doctor through Hi-Doctor costs a flat €25. This fee covers the doctor's review and the prescription if issued.



