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Sildenafil, sold under the brand name Viagra among others, is a medication used to treat erectile dysfunction and pulmonary arterial hypertension. [ 4 ] [ 8 ] It is also sometimes used off-label for the treatment of certain symptoms in secondary Raynaud's phenomenon . [ 9 ]
"It was an accident" is never a phrase that you want to hear in the laboratory -- well, almost never. After all, taking an experimental drug from the fume hood of a chemistry lab all the way to ...
Viagra has made its way into medicine cabinets the world over as a trusted medication for ED and cardiovascular health. We know intimate activity is supposed to be somewhat off the cuff, but you ...
Invention/discovery Inventor/discoverer Field Notes Discovered Nitric Oxide's role in relaxing blood vessels, transforming heart disease, erectile dysfunction, and aiding premature infants breathing struggles. Murad's discovery contributed to the invention of Viagra as well. Ferid Murad [1] [2] [3] Pharmacologist and Biochemistry
Sildenafil is a prototype of PDE5 inhibitors that Pfizer launched as Viagra. It was approved by the Food and Drug Administration (FDA) in 1998 as the first oral medicine for erectile dysfunction. Later, in the year 2005, it was approved for the treatment of pulmonary arterial hypertension. [2] Vardenafil and tadalafil were discovered in 1990.
After further trials, sildenafil citrate was approved by the Food and Drug Administration (FDA) in 1998 as the active ingredient in brand name Viagra, now a very well-known drug for ED.
Teva Canada launched Novo-Sildenafil, a generic version of Viagra, on the day the Supreme Court of Canada released its decision. [ 5 ] [ 21 ] [ 22 ] On August 5, 2014, the Supreme Court of British Columbia certified a class action against Pfizer.
Viagra could lead to more serious side effects, such as: Priapism (a painful, long-lasting arousal) Vision loss. Chest pain. Flu-like symptoms. Heart attack. Stroke. Dizziness. Sudden low blood ...