Even though Viagra has only been available since 1998, it has already gained a world-wide reputation, with sales of around 1billion per year. Pfizer ...
History. Sildenafil (compound UK-92480) was synthesized by a group of ..... " Viagra ruling upsets Pfizer". Telegraph Media Group Limited (2002-01-23). ...
Generic Viagra has the same active ingredient as the Brand Viagra, ... Viagra pfizer history. What if I miss a dose? This does not apply. ...
Development history of Viagra: Originally developed by Pfizer as a drug to help men who were suffering from chest pain, sildenafil citrate as a heart ...