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?

Notre équipe éditoriale

Medically reviewed by Notre équipe éditoriale

Written by Anne-Sophie Laignel

Last updated 1/3/2025 - 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

Need to consult a specialist doctor in sexual health?
  • Quick medical consultation in less than 24h.
  • Discreet teleconsultation: the doctor contacts you only if necessary.
  • Affordable rate: €35, for healthcare accessible to everyone.
  • Prescription in 3h if you are eligible for treatment.
  • Treatment delivered to your home by our partner pharmacies.

ARTICLES DE BLOG

À voir aussi

Thanks to its asynchronous approach and video consultations for more serious needs, Kano helps to relieve hospital services while ensuring effective medical follow-up.

Kano.care: a solution to the medical desert in Lille?

Finding a urologist quickly has become impossible in Lille! The shortage of urologists in Lille is a worrying reality that affects many patients facing excessive waiting times for specialized consultations. According to available data, the average waiting time to get an appointment with a urologist in the Lille region often exceeds eight months, an untenable situation for patients needing a treatment renewal or a rapid diagnosis, especially in cases of erectile dysfunction.

In case of suspicion of a more serious problem, a videoconference consultation with a specialist is organized to ensure appropriate medical follow-up.

How is Kano fighting the shortage of urologists in Marseille

The city of Marseille, despite being equipped with several renowned hospital facilities, is facing a critical shortage of urologists. With waiting times often exceeding eight months for a hospital consultation, patients suffering from urological disorders, particularly erectile dysfunction, find themselves in a difficult situation. Kano.care, by revolutionizing access to urological care through asynchronous teleconsultation, offers an effective and immediate alternative to the saturated physical consultations.

By relieving the burden of in-person consultations, Kano.care enables urologists to focus on complex cases, while ensuring quick access to care for patients.

How is Kano tackling the shortage of urologists in Bordeaux?

The shortage of urology specialists is a major problem in Bordeaux, as in many regions of France. Patients dealing with sexual function disorders, such as erectile dysfunction, often have to wait more than eight months to get an appointment for an in-person consultation. This excessive delay is unacceptable, especially for patients in need of a treatment renewal or a rapid diagnosis. It is in this context that Kano.care positions itself as an effective and modern alternative, allowing for quick, discreet, and high-quality care.

Ordoclic and Kano.care: a collaboration for convenient and reliable digital prescriptions.

Ordoclic: The Reference Partner for Digital Prescriptions from Kano.care

In a world where digital health is becoming increasingly important, choosing reliable and innovative partners is essential. For Kano.care, a leader in teleconsultation specializing in men's intimate health, the goal is clear: to offer its patients a smooth, secure, and effective experience. It is with this in mind that Kano.care has selected Ordoclic as a partner for the management of digital prescriptions. A strategic choice that improves the daily lives of patients while ensuring maximum security.

Kano Care's initiatives have already shown promising results in Lyon. Waiting times for urological consultations have decreased thanks to teleconsultations. Patients, especially in outlying areas, benefit from better follow-up. By combining technological innovation and recruitment efforts, Kano Care is building a sustainable solution to the shortage of specialists. This approach could serve as a model for other regions facing similar challenges.

How is Kano combating the shortage of urologists in Lyon?

The shortage of urologists is an increasing problem in many French regions, including Lyon, where access to specialized consultations is becoming increasingly difficult. In response to this challenge, Kano Care, an innovative healthcare company, offers concrete solutions to address this shortage. By combining advanced technologies, personalized services, and efficient organization, Kano Care aims to optimize access to urological care for patients in the Lyon area.

Kano.care is transforming access to men's healthcare by offering a digital solution that combines speed, safety, and discretion. Addressing specific needs such as erectile dysfunction, hair loss, or hormonal disorders, Kano.care simplifies medical consultations for men who value both convenience and privacy. The platform allows users to fill out an online medical questionnaire, which assists doctors in understanding their symptoms and making a quick diagnosis. Thanks to an online consultation that's just a few clicks away, patients can avoid the hassle of a physical appointment and receive an electronic prescription in less than 24 hours, if the treatment is appropriate.

How does Kano ensure quick access to reliable and secure medical consultations?

Kano.care is transforming access to men's healthcare by offering quick and secure online consultations. With a user-friendly platform, men can consult a doctor without the need for an in-person appointment and, if necessary, receive an electronic prescription in less than 24 hours. Kano.care ensures data confidentiality through advanced encryption protocols and collaborates with certified healthcare professionals. This solution eliminates the risks associated with counterfeit products and offers a reliable alternative to traditional consultations, meeting user expectations in terms of discretion and convenience.

REAL IMPACT

They Trust Us

Mick

39 years old

Super

Received the prescription in under 2 hours 👍🏼

Adriano

36 years old

Very satisfied

Quick, reliable. Perfect.

Philipe

53 years old

Simple and effective

Simple and effective, nothing more to say. Great for a first experience.

Treatments for erectile dysfunction, such as Viagra®, Cialis®, Levitra®, and Spedra®, carry potential risks that vary depending on the patient's health condition. They may cause serious side effects, including cardiovascular issues, dangerous drug interactions, or prolonged erections (priapism), which require immediate medical attention. It is essential never to take these medications without the advice of a qualified healthcare professional. A thorough medical consultation is necessary to determine the appropriate treatment for each individual, taking into account medical history and contraindications. Additionally, it is crucial to ensure that the medications are obtained from reliable and authorized sources. Medications purchased outside legal channels or without a prescription may be counterfeit, ineffective, or even harmful to health. Always consult a doctor before using these treatments and obtain medications from a licensed pharmacy.

iphone-consultation

Erectile dysfunction?

  • 100% online consultation
  • No appointment needed, prescription within 3 hours
  • Fast and discreet delivery
trustpilot

Rated as 'Excellent' on Trustpilot.

Thousands of men already trust us.

Erectile dysfunction?

  • 100% online consultation
  • No appointment needed, prescription within 3 hours
  • Fast and discreet delivery
iphone-consultation
trustpilot

Rated as 'Excellent' on Trustpilot.