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

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

    Here’s a list of both the half-lives and duration of action for four of the most common ED drugs (PDE5 inhibitors): Viagra (or sildenafil) lasts three to five hours after it’s consumed.

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

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

    In fact, studies show that just one dose of Viagra has a 70 to 80 percent success rate for treating ED. PDE5 stands for phosphodiesterase type 5, an enzyme that plays an important role in ...

  5. 4 Common ED Pills: Weighing the Pros & Cons of Each - AOL

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

    Over the last 25 years, (ED) medications like Viagra and Cialis have become common fixtures in bedrooms around the world. ... from a longer duration of action to a reduced risk of side effects.

  6. Got Headaches from Viagra or Cialis? Here's Why & How to Treat It

    www.aol.com/got-headaches-viagra-cialis-heres...

    Cialis (and its generic equivalent, tadalafil) is known for its long duration of action, meaning it might not be the best choice if you’re prone to headaches or other side effects.

  7. Pharmacodynamics - Wikipedia

    en.wikipedia.org/wiki/Pharmacodynamics

    The duration of action of a drug is the length of time that particular drug is effective. [5] Duration of action is a function of several parameters including plasma half-life, the time to equilibrate between plasma and target compartments, and the off rate of the drug from its biological target. [6]

  8. What Is the Safest ED Medication? - AOL

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

    The active ingredient in Viagra, sildenafil is the most well-known medication for ED. ... tadalafil is a long-lasting ED drug that offers relief from ED for up to 36 hours per dose — a duration ...

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

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

    Viagra and its main ingredient, sildenafil are medications known as PDE5 inhibitors. ... The mechanism of action of other oral ED medications (like Cialis and Levitra) is similar.

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