Ian Osterloh is a clinical researcher for Pfizer, Inc. who led the development of sildenafil citrate (Viagra), as well as a number of Pfizer medications for cardiovascular disease. Pfizer Incorporated ( is a major Pharmaceutical company, which ranks number one in the world in sales Sildenafil citrate, sold as Viagra, Revatio and under various other trade names is a drug used to treat Erectile dysfunction (male impotence Cardiovascular disease or cardiovascular diseases refers to the class of diseases that involve the Heart or Blood vessels ( arteries and
He was educated at The Portsmouth Grammar School. The Portsmouth Grammar School is an independent coeducational day school located in Portsmouth, England
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