Sildenafil 25 mg, a low-dose alternative for erectile dysfunction, works by relaxing blood vessels and promoting blood flow to the penis. This medication requires sexual stimulation to be effective.

How does Sildenafil 25 mg work?

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Medically reviewed by Notre équipe éditoriale

Written by Anne-Sophie Laignel

Last updated 1/22/2025 - 3 min read

Sildenafil, marketed under names like Viagra, is a recognized medication for treating erectile dysfunction. Available in various dosages, Sildenafil 25 mg represents the lowest dose. But how does this dosage work, and how long do its effects last? Let's explore these questions in detail.

What is Sildenafil 25 mg?

Le Sildenafil 25 mg appartient à une classe de médicaments appelés inhibiteurs de la phosphodiestérase de type 5 (PDE5). Ces médicaments agissent en augmentant le flux sanguin vers le pénis, facilitant ainsi l'obtention et le maintien d'une érection en réponse à une stimulation sexuelle.

This particular dosage is often recommended for men who are just starting treatment or those sensitive to the side effects of higher doses (50 mg or 100 mg). As an initial dose, it allows for a gentler approach tailored to each individual.

Evaluate Your Erectile Function in 2 Minutes

The IIEF-5 Index is a recognized tool to assess erectile function. Answer 5 questions and discover your score and options in complete confidentiality.

IIEF-5

Over the last six months

How do you rate your confidence that you could get and keep an erection?

Very low

Low

Moderate

High

Very high

Mechanism of action of Sildenafil 25 mg

Sildenafil works by inhibiting the PDE5 enzyme, which plays a role in reducing an erection. Here's how it works:

  1. Smooth muscle relaxation: Sildenafil promotes the production of nitric oxide in the body, which causes the smooth muscles of the blood vessels in the penis to relax.
  2. Improvement of blood circulation: This relaxation allows a greater blood flow into the cavernous bodies of the penis, which is essential for a firm erection.
  3. Need for sexual stimulation: Contrary to some myths, Sildenafil does not automatically cause an erection. Sexual stimulation is essential for the drug to be effective.

Duration of action of Sildenafil 25 mg

Sildenafil starts to work between 30 minutes and one hour after ingestion. To optimize its effect, it is advised to take it on an empty stomach or after a light meal, as a fatty meal can delay its action.

  • Average duration of effect: Generally, the effects of Sildenafil 25 mg last about 4 to 6 hours. This means that a man has a comfortable period to respond to sexual stimulation.
  • Factors influencing duration: Factors such as age, overall health, alcohol consumption, or the use of other medications can extend or shorten this duration of effect.

Why choose Sildenafil 25 mg?

The 25 mg dosage is suitable for several specific situations:

  • Increased drug sensitivity: Men with a higher sensitivity to side effects such as headaches or flushing may benefit from a reduced dose.
  • Maintenance therapy: For men who need minimal support to maintain an erection, 25 mg may be sufficient.
  • Special populations: Men with preexisting health issues, such as mild renal or hepatic insufficiency, may start with this dosage under medical supervision.

How to take Sildenafil 25 mg?

To ensure the medication is effective and safe, follow these tips:

  1. Follow the medical prescription : Never take more than one dose in 24 hours.
  2. Do not combine it with nitrates: These medications, often prescribed for heart problems, can cause a dangerous drop in blood pressure when combined with Sildenafil.
  3. Moderate alcohol consumption: Excessive drinking can reduce the effectiveness of the medication.

Possible side effects

Although Sildenafil 25 mg is generally well tolerated, some side effects may occur:

  • Mild and transient effects: Headache, hot flashes, mild nausea, or nasal congestion.
  • Less common effects: Temporary visual disturbances or muscle pains.
  • Serious side effects (rare): If you experience chest pain, prolonged erection, or sudden loss of vision, seek medical attention immediately.

Can one obtain 25 mg of Sildenafil without a prescription?

In France, Sildenafil is only available by prescription. This ensures safe use and that it is tailored to your needs.

The platform Kano.care offers a convenient solution for obtaining a medical prescription. Here are the steps:

  1. Answer an online survey about your health.
  2. A certified doctor evaluates your situation.
  3. If appropriate, a prescription is issued, and the treatment can be discreetly delivered to your home.

Le Sildenafil 25 mg est une option efficace et bien tolérée pour traiter la dysfonction érectile, en particulier pour les hommes cherchant une approche douce ou présentant une sensibilité aux doses plus élevées. Son action rapide et ses effets durant jusqu’à 6 heures en font un choix pratique pour améliorer la qualité de vie sexuelle. Pour garantir un usage sécuritaire, une consultation médicale reste indispensable. Visitez Kano.care pour une solution simple, discrète et professionnelle afin de retrouver confiance et satisfaction dans votre vie intime.

Evaluate Your Erectile Function in 2 Minutes

The IIEF-5 Index is a recognized tool to assess erectile function. Answer 5 questions and discover your score and options in complete confidentiality.

IIEF-5

Over the last six months

How do you rate your confidence that you could get and keep an erection?

Very low

Low

Moderate

High

Very high

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