Guest guest Posted April 25, 2007 Report Share Posted April 25, 2007 Is anyone seeing a decline in the effectiveness of Zithromax using the new generic versions? Here is the news article from a year ago. I know this article looks like Pfizer is just trying to hold onto its profit, but what if the antibiotic is not as effective? - a Carnes http://www.pharmabioingredients.com/news/2006/02/08/pfizer_sues_teva,_sandoz_over_zithromax Breaking News From Pharma & Bio Ingredients Pfizer Sues Teva, Sandoz Over Zithromax Posted on 2006-02-08 22:11:00 Pfizer Inc. has filed a patent infringement suit against generic drug makers Teva Pharmaceutical Industries Ltd. and Sandoz Inc. concerning generic versions of the antibiotic Zithromax.Representatives from Sandoz, based in Princeton, N.J., and Teva, based in Israel, couldn't immediately be reached for comment. In a press release Wednesday, Pfizer also said it filed a petition with the U.S. Food and Drug Administration, claiming Teva's and Sandoz's azithromycin product labels do not accurately describe the drug's active ingredients. According to Pfizer, the generics contain significant amounts of azithromycin sesquihydrate, rather than the azithromycin monohydrate that their labels state. Pfizer's Zithromax and generic azithromycin, launched by the company's Greenstone subsidiary, contain azithromycin dihydrate, which is the product approved in Pfizer's new drug application. Pfizer, based in New York, is asking the FDA to recall the drugs and review the product approval applications filed by the two companies. Quote Link to comment Share on other sites More sharing options...
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