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  2. Your ED Pill Guide: Everything You Need to Know Before ... - AOL

    www.aol.com/ed-pill-guide-everything-know...

    Research shows that, when used properly, these ED pills can help improve function. Many of these pills work fairly quickly. Sildenafil (Viagra), tadalafil (Cialis) and vardenafil (Levitra ...

  3. 5 Must-Know Tips Before Taking Sildenafil 100mg - AOL

    www.aol.com/5-must-know-tips-taking-105700758.html

    How Effective is Sildenafil 100mg? Sildenafil works well for most men with ED at any dosage, although the highest 100mg dosage produces improvements for a greater percentage of men than 50mg or 25mg.

  4. Do I Need to Avoid Any Foods When Taking Viagra? - AOL

    www.aol.com/avoid-foods-taking-viagra-105700883.html

    Viagra dosage can vary by person but is available in three doses: 25mg, 50mg and 100mg doses, with the 50mg option being the usual starting dose. This usual starting dose of 50mg is taken one hour ...

  5. Sildenafil - Wikipedia

    en.wikipedia.org/wiki/Sildenafil

    Sildenafil, sold under the brand name Viagra, among others, is a medication used to treat erectile dysfunction and pulmonary arterial hypertension. [4][8] It is also sometimes used off-label for the treatment of certain symptoms in secondary Raynaud's phenomenon. [9]

  6. Erectile dysfunction - Wikipedia

    en.wikipedia.org/wiki/Erectile_dysfunction

    Sildenafil, Tadalafil, Vardenafil [ 13 ] Erectile dysfunction (ED), also referred to as impotence, is a form of sexual dysfunction in males characterized by the persistent or recurring inability to achieve or maintain a penile erection with sufficient rigidity and duration for satisfactory sexual activity. It is the most common sexual problem ...

  7. Vardenafil - Wikipedia

    en.wikipedia.org/wiki/Vardenafil

    Vardenafil's indications and contraindications are the same as with other PDE5 inhibitors; it is closely related in function to sildenafil citrate (Viagra) and tadalafil (Cialis). The difference between the vardenafil molecule and sildenafil citrate is a nitrogen atom's position and the change of sildenafil's piperazine ring methyl group to an ...