Viagra patent expire

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  • Viagra’s patent, originally scheduled to expire in late March of , has been extended to April of That’s good news for the manufacturer, Pfizer, Inc., of course, but it’s also good news for patients suffering from Erectile Dysfunction. Viagra's patent, originally scheduled to expire in late March of , has been extended to April of That's good news for the manufacturer, Pfizer, Inc., of course, but it's also good news for patients suffering from Erectile Dysfunction. You can buy Levitra tablets online from The Independent Pharmacy, quickly and discreetly in 5mg, 10mg & 20mg . Discreet consultation with our Online Doctor service and ongoing support. Last updated on Aug 4, If you are between the ages of 18 an. Medically reviewed by Carmen Fookes, BPharm. Quick easy-to-read overview of Viagra. Includes: how it works, upsides, downsides, bottom line, tips, response and effectiveness. 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