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  2. Viagra: What It Treats & Its Side Effects ( Plus What It Was ...

    www.aol.com/lifestyle/viagra-treats-side-effects...

    Studies have shown a 70 to 80 percent success rate in patients who use this treatment. ... Plenty of claims have been made about the health benefits of Viagra for men. Sildenafil’s ability to ...

  3. What Does Viagra Actually Do to Your "Intimate" Experience? - AOL

    www.aol.com/does-viagra-actually-intimate...

    The active ingredient, Sildenafil, is a PDE5 inhibitor that helps blood vessels relax. This helps improve blood flow to the privates, making it easier to get and maintain a climax. If you have ED ...

  4. 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]

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

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

    Many of these pills work fairly quickly. Sildenafil (Viagra), tadalafil (Cialis) and vardenafil (Levitra) typically start working within 30 to 60 minutes, while avanafil (Stendra) works within 15 ...

  6. 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. It is the most common sexual problem in males and can cause psychological ...

  7. 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.

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