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2. Things You Probably Don't Know About Viagra (Like What ... - AOL

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

   Viagra (Sildenafil): Uses, Benefits and Side Effects. This article was reviewed by Kelly Brown MD, MBA.. Whether you’re a senior in high school or a senior-living resident, you’ve likely heard ...

3. 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 ]

4. 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.

5. Is Sildenafil Safe for This Common Male Problem? - AOL

   www.aol.com/sildenafil-safe-common-male-problem...

   Sildenafil is most commonly prescribed to be taken one time per day in doses between 25 and 100 mg for ED. Your healthcare provider will determine the best dosage for you based on a number of factors.

6. 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.

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 ...

8. How to Take Viagra for Best Results - AOL

   www.aol.com/viagra-best-results-105700318.html

   When to Take Viagra: 30-60 Minutes Before Intimacy, Not Earlier. If you’re planning to have intimacy, it’s best to take your recommended dose of Viagra ahead of time.

9. Herbal viagra - Wikipedia

   en.wikipedia.org/wiki/Herbal_viagra

   However, sildenafil and chemicals similar to sildenafil have been found as adulterants in many supplements which are sold as herbal viagra or "natural" sexual enhancement products. [ 5 ] [ 6 ] [ 7 ] The United States Food and Drug Administration has warned consumers that any sexual enhancement product that claims to work as well as prescription ...