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  2. 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 ...

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

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

    Whether you’re one of the 30 million men who have (ED) or not, you’ve almost certainly heard of Viagra. Maybe you even know about other ED medications, like Levitra or Stendra or Cialis, too.

  4. 4 Common ED Pills: Weighing the Pros & Cons of Each - AOL

    www.aol.com/4-common-ed-pills-weighing-141800609...

    Vardenafil (Levitra) Vardenafil is the active ingredient in Levitra, and the FDA approved it in 2003. It’s similar to sildenafil but lasts longer — research suggests it provides better blood ...

  5. PDE5 inhibitor - Wikipedia

    en.wikipedia.org/wiki/PDE5_inhibitor

    Chemical structure of sildenafil (Viagra), the prototypical PDE5 inhibitor. A phosphodiesterase type 5 inhibitor (PDE5 inhibitor) is a vasodilating drug that works by blocking the degradative action of cGMP-specific phosphodiesterase type 5 (PDE5) on cyclic GMP in the smooth muscle cells lining the blood vessels supplying various tissues.

  6. What Is the Safest ED Medication? - AOL

    www.aol.com/safest-ed-medication-105700669.html

    The active ingredient in Levitra, vardenafil provides relief from ED for four to five hours. Avanafil. Sold as Stendra, avanafil is a newer treatment that provides relief from ED for up to six ...

  7. Erectile dysfunction - Wikipedia

    en.wikipedia.org/wiki/Erectile_dysfunction

    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.

  8. Things You Probably Don't Know About Viagra (Like What It Was ...

    www.aol.com/things-probably-dont-know-viagra...

    Other medications for ED, like Cialis (tadalafil), Levitra (vardenafil), and Stendra (avanafil), may also help. Follow the guidance of a medical professional. Always consult a trusted healthcare ...

  9. Tadalafil - Wikipedia

    en.wikipedia.org/wiki/Tadalafil

    20 mg Cialis tablet. Tadalafil is used to treat erectile dysfunction, benign prostatic hyperplasia, and pulmonary arterial hypertension. [8] In the US, tadalafil (as Cialis) is indicated for the treatment of erectile dysfunction and the signs and symptoms of benign prostatic hyperplasia; [5] and (as Adcirca) for the treatment of pulmonary arterial hypertension to improve exercise ability.

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