FDA Approves Four Generic Forms of Zidovudine for U.S. Sales After Retrovir''s Patent Expires

... FDA on Monday announced it has granted approval for four forms of the generic antiretroviral drug zidovudine to be sold in the U.S., after http://www.gsk.com/GlaxoSmithKline''s patent on the drug -- sold under the brand name Retrovir -- expired on Saturday, Dow Jones reports... click link for more info. ...