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Pfizer's Expiring Viagra Patent Adversely Affects Other Drugmakers Too
2013-12-20 21:29:19| Chemicals - Topix.net
Looking ahead, the sex business isn't expected to be as profitable as it once was for Pfizer Eli Lilly and Bayer AG, manufacturers of Viagra, Cialis and Levitra, respectively, the three top-selling oral drugs taken by men worldwide for erectile dysfunction .
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Category:Chemicals
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