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

   www.aol.com/weighing-pros-cons-4-common...

   Over the last 25 years, (ED) medications such as Viagra and others have become common and normal pieces of bedroom tool kit. These little pills have helped hundreds of millions of men all over the ...

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

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

   Sildenafil (Viagra), tadalafil (Cialis) and vardenafil (Levitra) typically start working within 30 to 60 minutes, while avanafil (Stendra) works within 15 to 30 minutes. As with most prescription ...

4. What Is the Safest ED Medication? - AOL

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

   Tadalafil is available as brand name Cialis and as a generic medication. It can be used as needed before intimate activity or taken daily at a reduced dosage to provide ongoing ED relief ...

5. 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 ...

6. Tadalafil - Wikipedia

   en.wikipedia.org/wiki/Tadalafil

   Rare but serious side effects include a prolonged erection that can lead to damage to the penis, vision problems, and hearing loss. [8] Tadalafil is not recommended in people taking nitrovasodilators such as nitroglycerin, as this may result in a serious drop in blood pressure. [8] Tadalafil is a PDE 5 inhibitor which increases blood flow to ...

7. Discovery and development of phosphodiesterase 5 inhibitors

   en.wikipedia.org/wiki/Discovery_and_development...

   This allows for a longer therapeutic window and is therefore often a more convenient drug than others with a shorter therapeutic window. Tadalafil is more bioavailable (80%) than sildenafil (40%) and vardenafil (15%) but it has a slow absorption, or about 2 hours compared to 50 minutes of sildenfil. Vardenafil is most known for its potency. [24]

8. What Happens If You Take Viagra and You Don't Need It? - AOL

   www.aol.com/happens-viagra-dont-105800158.html

   If you struggle with ED, drugs like Viagra®, sildenafil, tadalafil, and other FDA-approved medications could help with your performance. But if you’re not prescribed one of these meds, taking ...

9. Cialis Side Effects: What to Expect (& How to Avoid Them) - AOL

   www.aol.com/cialis-side-effects-expect-avoid...

   Cialis has several common side effects, many of which also happen with other drugs used to treat ED, like sildenafil (generic Viagra®), vardenafil , and avanafil (Stendra®).