Viagra turns 20: chronicle of a global success - Medical Xpress

Medical Xpress

Viagra turns 20: chronicle of a global success Medical Xpress Launched in the United States 20 years ago, Viagra has sold in the billions and become an unexpected source of revenue for its maker Pfizer, as well as copycats worldwide. From its serendipitous discovery to its many counterfeit versions, here is a ... Viagra turns 20: This is the how the little blue pill was discovered by mistakeHindustan Times all 14 news articles »

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