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Who created viagra
Browse 2, viagra stock photos and images available or search for viagra pill or viagra bottle to find more great stock photos and pictures. 10/03/ · Counterfeit viagra, from the US Customs and Border Protection, Public Domain via Wikimedia Commons Pfizer quickly patented sildenafil in and got FDA approval for it in . When sildenafil was approved by the U.S. Food and Drug Administration in , it revolutionized the treatment protocol for men with ED, once considered a. März , wurde der Wirkstoff Sildenafil unter dem Markennamen Viagra vom US-Pharmakonzern Pfizer in den USA auf den Markt gebracht. As the first oral pharmaceutical drug for ED, it. Mar 10, · Pfizer quickly patented sildenafil in and got FDA approval for it in as a drug to treat erectile dysfunction. And thus, Viagra was born. As the first oral pharmaceutical drug for ED, it. Pfizer quickly patented sildenafil in and got FDA approval for it in as a drug to treat erectile dysfunction. And thus, Viagra was born. As the first oral pharmaceutical drug for ED, it. Pfizer quickly patented sildenafil in and got FDA approval for it in as a drug to treat erectile dysfunction. And thus, Viagra was born. In created, inventors Andrew Bell, Dr. When researchers first created sildenafil in viagra s, it was intended to be a treatment for anginaor chest pain caused by reduced blood flow to the heart, . Das Produkt wurde schnell zum. Entdeckung und Patentierung von Viagra sind ein Volltreffer für den US-Pharmakonzern Pfizer, gewesen. May 1, After the patent expired in late and competitors created cheaper alternatives and generics, Viagra sales plummeted with 73%.