Viagra Overview

Encyclopedia: Sildenafil

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Sildenafil citrate, sold under the names Viagra, Revatio and under various other names, is a drug used to treat male erectile dysfunction and pulmonary arterial hypertension , developed by the pharmaceutical company Pfizer. Its primary competitors on the market are tadalafil , and vardenafil . Sildenafil was synthesized by a group of pharmaceutical chemists working at Pfizer's Sandwich, Kent research facility in England. It was initially studied for use in...


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Official Site: Viagra (Sildenafil Citrate)

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Food and Drug Administration (FDA): Viagra (sildenafil citrate) Information

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Viagra is the popular trade name for sildenafil citrate, a drug prescribed for erectile dysfunction. First approved by the FDA in 1998, 2.9 million prescriptions for Viagra were written in...

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Questions and Answers

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Does Viagra have any side effects?
My boyfriend started taking Viagra and now he has headaches. Could this be caused by...

Yes, headaches are a side effect of Viagra. Other common side effects are facial flushing, upset stomach and a temporary bluish vision. If this persists, he should consult his Doctor....

Asked by Keen - 5 months ago

How long does Viagra's effect last?
My Husband got Viagra from his Doctor and wants to start taking it. How long...

Here is a link to a video that answers your question: http://www.viagra.com/content/how-viagra-ed-medication-works.jsp?setShowOn=../content/about-viagra-ed-treatment.jsp&setShowHighlightOn=../content/how-viagra-ed-medication-works.jsp

Asked by Dellinger - 5 months ago

What are the risks of taking Viagra?
Are there any risks in taking Viagra in the long term?

The US Food and Drug Administration identified 50 men with blindness who have taken Viagra, but who also had diabetes and heart disease, which is known to cause blindness. Therefore,...

Asked by Keen - 3 months ago

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Does the viagra have a negative effect when taken with Hyzar 50 mg for High...
I have been on this medication for about 3.5 years. I am approaching 60. I...

This is definitely a risk, no matter what auto-checkers or other posters say. Hyzaar=losartan and hydrochlorothiazide lowers blood pressure. Viagra can lower blood pressure by re-routing blood flow. Just because some some references do...

Asked by mmkuzman - 14 months ago

Where can I find a viagra tablet that will dissolve in Lager?
Thinking of playing a prank involving viagra, and surprisingly enough, the spam section of my...

pranks involving making people ingest things without their knowledge is illegal, jailable offense. you at the least may lose a friend and at the most the guy could be on...

Asked by Distortion - 13 months ago

Question & Answer

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  • Is viagra realy works?

    Yes. It was discovered by accident precisely because it does work. It was intended as a heart medicine, but they were giving it to healthy student volunteers to check it had no bad side effects....

  • Is viagra used for masterbation?

    You can use Viagra for masturbation if you struggle to get an erection. Or if you have erection problems and want to see if it works before you try it with a partner. For more...


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