Viagra is a medication also known as Sildenafil citrate that was created by Pfizer in 1989 as a type of inhibitor called a PDE5 inhibitor aimed at enhancing blood circulation through the NO/cGMP pathway, for heart related issues like angina or chest pain initially believed it might help with dysfunction (ED). However subsequent tests proved its effectiveness in treating ED which led to its approval by the FDA in 1998 since then Viagra has revolutionized the treatment of ED and has become an widely prescribed option, for millions of people worldwide.
Dunzendorfer, U. (2012) Sildenafil. Switzerland: Birkhäuser Basel.
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Dunzendorfer, U. (2012) Sildenafil. Switzerland: Birkhäuser Basel.
Dunzendorfer, U. (2012) Sildenafil. Switzerland: Birkhäuser Basel.
Dunzendorfer, U. (2012) Sildenafil. Switzerland: Birkhäuser Basel.