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Who Makes Viagra?

Viagra® (sildenafil citrate) is a medication used for treating erectile dysfunction. Pfizer Inc., makes Viagra, which is a brand-name medication. There are currently no approved generic versions of this medication, despite what you may find on the Internet.
 
Viagra is usually taken as needed, generally one hour before sexual activity. However, do not take the medication more than once a day. In most cases, it starts working within 30 minutes and can last for at least 4 hours.
 
Commonly reported side effects include headache, indigestion, and facial flushing. Men with cardiovascular disease or significant risk factors for heart disease may have an increased risk for serious side effects.
 
(Click Viagra to learn more about the effects of this drug, who can use it, and why some men may not be able to take it. This article also offers details on dosing guidelines, interactions, available strengths, and more.)
 
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