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  2. Cialis vs. Viagra: How Are They Different? - AOL

    www.aol.com/cialis-vs-viagra-different-175700354...

    It depends who you ask. One of the main reasons people consider Cialis to be “better” than Viagra is that Cialis lasts longer. Cialis can last for up to 36 hours per dose, whereas a single ...

  3. 4 Common ED Pills: Weighing the Pros & Cons of Each - AOL

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

    The Best ED Medication for Men: Pros & Cons of Top ED Pills. Over the last 25 years, (ED) medications like Viagra and Cialis have become common fixtures in bedrooms around the world.

  4. Tadalafil: Your Ultimate Guide to Dosages, Side Effects & More

    www.aol.com/tadalafil-ultimate-guide-dosages...

    Like sildenafil (the active ingredient in Viagra), avanafil (sold as Stendra) and other ED medications, tadalafil is available in several dosages, but unlike the others, it can also be prescribed ...

  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] It is unclear if it is effective for treating sexual dysfunction in females. [8]

  6. Tadalafil - Wikipedia

    en.wikipedia.org/wiki/Tadalafil

    Tadalafil. Tadalafil, sold under the brand name Cialis among others, is a medication used to treat erectile dysfunction, benign prostatic hyperplasia, and pulmonary arterial hypertension. [5][6][8] It is taken by mouth. [8] Onset is typically within half an hour and the duration is up to 36 hours. [8]

  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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