FDA has allowed to market Viagra by Pfizer.

Viagra proved to be a blessing for millions of impotence sufferers. Viagra has been approved by regulatory authorities in more than 123 countries around the world and is among the most widely prescribed medications, with more than 130 million prescriptions written for 23 million men worldwide.

Viagra (Sildenafil Citrate) is used to treat impotence in men. Viagra increases the body's ability to achieve and maintain an erection during sexual stimulation. Viagra does not protect you from getting sexually transmitted diseases, including HIV.

Viagra comes as a tablet to take it orally. It should be taken as needed about 1 hour before sexual activity. However, Viagra can be taken anytime from 4 hours to 30 minutes before sexual activity. Viagra should not be taken more than once a day. Do not take more or less of it or take it more often than prescribed by your doctor.

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