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Viagra® (sildenafil citrate) is a prescription medication used to treat erectile dysfunction, which is also known as impotence or ED. The mean subject age was 66. Concomitant administration of Viagra and an alpha-blocker may lead to symptomatic hypotension in some patients. They were also asked if they had been prescribed Viagra and Cialis for erectile difficulties. Pfizer claims that in a review of 103 Viagra clinical trials with over 13,000 patients, no evidence of NAION or non-arteritic anterior ischemic optic neuropathy was found.

S. Pregnancy—Sildenafil is not indicated for use in women. "Very early days but promising". Average duration of erection with 100 mg of Viagra and 20 minutes of sex videos, among men with erectile dysfunction: 1 minute Because Viagra doesn't increase desire, it's not prescribed for men with desire disorders, such as a low sex drive. There have also been reports of other rare problems with vision in people taking Viagra. Its affects during pregnancy and breastfeeding have not been studied. There were two subjects who had a standing SBP of < 85 mmHg. To avoid low blood pressure, do not take the 50-milligram or 100-milligram dose of Viagra within 4 hours of taking an alpha-blocking drug such as Cardura. Typical side effects include headache, flushing, upset stomach, nasal stuffiness, diarrhea, and dizziness. One-quarter of men who use 200 mg experience facial flushing, while 15% report stomach problems. The results of the study show sildenafil ( Viagra ) to be a promising option for the many people experiencing antidepressant sexual side effects.