Viagra® and Levitra® are two of the most popular medications for treating erectile dysfunction (ED), a common disorder in men of all ages. These drugs belong to the same class, that of type 5 phosphodiesterase inhibitors (PDE5), which work by increasing blood flow to the penis during sexual stimulation. Although they share this basic mechanism, Viagra® and Cialis® have distinct characteristics that may influence your choice depending on your needs. Viagra®, whose active ingredient is sildenafil, was the first drug on the market to treat ED. It is taken about 30 to 60 minutes before sexual activity, with an effect that lasts between 4 to 6 hours. It is particularly recommended for men who are looking for a short-term solution or who prefer to take medication on an as-needed basis. However, its relatively short duration of action may limit the spontaneity of sexual encounters. Cialis®, on the other hand, is known for its longer duration of action, which can last up to 36 hours, making it a suitable option for men who seek more flexibility or who engage in sexual activity more frequently. This allows for a more spontaneous sexual experience without the need to plan ahead for medication intake. Each individual's response to these medications can vary, and it is important to consult a healthcare professional to determine the most appropriate treatment for your situation.

Viagra® vs Levitra®? Which one to choose?

Dr. Sam Ward - Urologue et Andrologue

Medically reviewed by Dr. Sam Ward

Written by Anne-Sophie Laignel

Last updated 9/13/2024 - 6 min read

What is the best option for treating erectile dysfunction?

Erectile dysfunction (ED) is a medical problem that affects millions of men around the world. Fortunately, several medications can help to address this issue, including Viagra® (sildenafil) and Levitra® (vardenafil). Although they share a common goal, these two medications have significant differences that can influence the choice of treatment. This article will compare Viagra® and Levitra® in detail, helping you to choose the most suitable treatment for your needs and explaining how to obtain a prescription online via Kano.care. Additionally, we will highlight the potential dangers of misusing these medications.

Viagra®: The pioneer in the treatment of erectile dysfunction

Viagra®, introduced by Pfizer in 1998, is undoubtedly the most famous medication for treating erectile dysfunction. It contains sildenafil, a type 5 phosphodiesterase inhibitor (PDE5), which works by increasing blood flow to the penis to facilitate an erection during sexual stimulation.

Operation and efficiency

Viagra® starts to work about 30 to 60 minutes after taking it, and its effect usually lasts between 4 to 6 hours. It is effective with sexual stimulation and helps men maintain an erection sufficient for satisfactory sexual intercourse. However, it is not a permanent cure, and the medication must be taken each time before sexual activity.

Levitra®: A newer alternative

Levitra®, launched by Bayer in 2003, also works as a PDE5 inhibitor but contains vardenafil. This molecule shares similarities with sildenafil but has certain distinctive features that may be more suitable for specific patient profiles.

Operation and efficiency

Like Viagra®, Levitra® starts to work about 30 to 60 minutes after taking it. However, it tends to offer a slightly longer duration of action, up to 8 hours. Some studies suggest that vardenafil may be better tolerated by men with certain medical conditions, such as diabetes, making it an interesting option for this patient category.

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Comparison of the two drugs

1. Action time

Both medications start to work approximately 30 to 60 minutes after ingestion. However, the duration of Levitra®'s effect might be slightly longer than that of Viagra®. This means that you could have a wider window of opportunity with Levitra®, offering you more flexibility in your sexual encounters.

2. Side effects

The side effects of both medications are similar and may include headaches, hot flashes, nasal congestion, and sometimes temporary visual disturbances, such as slightly blue-tinted vision. However, some men find that the side effects of Levitra® are less pronounced. For example, it is less likely to affect vision than Viagra®, which can be a deciding factor for some patients.

3. Effectiveness depending on medical conditions

For men with diabetes or heart diseases, Levitra® is sometimes considered a better option due to its slightly higher tolerance in these cases. On the other hand, Viagra® has been used for over two decades, and its effectiveness has been widely proven among the majority of users.

4. Usage Frequency

Viagra® and Levitra® are both taken as needed, meaning you take them before each sexual activity. Neither option requires daily intake, unlike some other medications such as Cialis®.

5. Food and Interaction

Viagra® may be less effective if you eat a heavy or high-fat meal before taking it. This can delay the drug's absorption and reduce its effectiveness. Levitra®, on the other hand, seems to be less affected by food intake, making it a more flexible option for men who do not want to adjust their diet before having sexual intercourse.

Why choose one over the other?

The choice between Viagra® and Levitra® depends on several personal factors, including your specific needs, preferences, and overall health.

  • Choose Viagra® if : You are looking for a medication with a solid reputation and a proven track record of effectiveness. If you don’t have any specific medical conditions and meals do not disrupt your intake, Viagra® could be a good choice.
  • Choose Levitra® if : You have diabetes or other health issues, or if you want a medication that is less affected by food intake. Moreover, if you are looking for a longer duration of action without the need for daily dosing, Levitra® might be more suitable.

The dangers of inappropriate use of ED medications

Although Viagra® and Levitra® are both effective treatments for erectile dysfunction, their misuse can pose serious health risks.

Risk of overdose

Taking more than the recommended dose of Viagra® or Levitra® will not give you better results, but may lead to serious complications, such as a dangerous drop in blood pressure, prolonged and painful erections (priapism), and heart disorders.

Getting a prescription for Viagra
Dr. Sam Ward - Urologue et Andrologue

Révision médicale par le Dr. Sam Ward

Directeur médical, Urologue et Andrologue

Le Docteur Sam Ward, urologue et andrologue, dirige le service d'urologie à la Clinique Saint-Jean de Bruxelles depuis octobre 2024. Membre du Comité exécutif de la Chaire UNESCO Santé sexuelle & Droits humains et cofondateur de Kano.care, il est spécialise en santé masculine et médecine sexuelle.

En savoir plus sur notre équipe médicale

Reviewed on 6/6/2025

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Sildenafil and tadalafil work by increasing blood flow to the penis, thus facilitating an erection, but their use requires a prescription to avoid side effects.

What medication should be taken to achieve an erection?

Erectile dysfunction affects many men at different times in their lives. Whether related to stress, fatigue, medical or psychological causes, it can have a significant impact on self-confidence and quality of life. Faced with this issue, many seek medicinal solutions to achieve a satisfactory erection. However, it is essential to remember that only treatments prescribed by a doctor after a consultation are acceptable. Self-medication or purchasing drugs from unapproved sites can be dangerous to health.

Medicinal treatments such as Viagra and Cialis, available through Kano.care, offer an immediate and scientifically validated solution, unlike dietary supplements which remain unproven.

Medication vs Dietary Supplement for better erections.

In a market flooded with solutions for erectile dysfunction, it is essential to distinguish truly effective treatments from products that are at best supplementary, at worst ineffective. The difference between a medication and a dietary supplement is crucial, as it directly affects the health and effectiveness of the proposed solutions. At Kano, we have chosen to offer our patients access to approved medicinal treatments prescribed by health professionals, thus ensuring optimal and effective management of erectile dysfunction.

Viagra is an effective medication for erectile dysfunction, but its use must be supervised by a healthcare professional. Indeed, improper use can lead to serious side effects and dangerous interactions.

How to buy Viagra? (or Sildenafil)

Viagra is a medication used to treat erectile dysfunction, but unlike other products that are freely available, it cannot be purchased directly from a pharmacy or online without a prescription. Its acquisition is based on a medical prescription, as its use must be regulated to ensure its effectiveness and to avoid health risks. Discover in this article why Viagra requires a prescription, how a medical consultation on Kano.care proceeds, and why one should be wary of products sold illegally online.

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Why can't you buy Cialis online without a consultation and a medical prescription?

Purchasing Cialis online without a medical prescription exposes you to major dangers, such as counterfeit drugs, illegal websites, and the lack of medical follow-up. This treatment for erectile dysfunction requires a prior medical evaluation to ensure its effectiveness and to avoid risks associated with contraindications or improper dosing. Kano.care offers a legal and secure alternative through online consultations, reliable prescriptions, and fast and discreet delivery. By choosing Kano.care, you benefit from comprehensive care that respects medical practices and focuses on your intimate health.

Les sites qui proposent du Viagra sans ordonnance sont souvent illégaux et insécurisés, mettant en danger la santé et les données personnelles des utilisateurs.

Pourquoi vous ne pouvez pas acheter du Viagra en ligne sans consultation et prescription médicale?

Le Viagra, reconnu mondialement pour son efficacité dans le traitement de la dysfonction érectile, ne doit pas être considéré comme un médicament anodin. Son acquisition requiert une approche responsable et encadrée par des professionnels de santé. Si vous vous interrogez sur l’impossibilité d’acheter légalement du Viagra en ligne sans consultation médicale, sachez que cela repose sur des impératifs de sécurité, de légalité et de santé publique. Cet article met en lumière les dangers de l’achat non encadré de Viagra et présente l’approche rigoureuse de Kano.care, qui offre un accès légal, sécurisé et médicalement supervisé à ce traitement.

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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.

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