Today, NEJM reaffirmed its position even as it published letters from Merck and its co-authors denying wrongdoing.

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Zetia, known generically as ezetimibe, was invented in Schering's labs (see: "Behind Zetia's Curtain") and is co-marketed with Merck.

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It is in mid-stage clinical trials, and is being co-developed by Merck (nyse: MRK - news - people ).

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Schering, meanwhile, is benefiting from the first sign that its sales are leveling out, and that its cholesterol medicines, co-marketed with Merck, could take off.

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Researchers at Cornell University tested the drug lovastatin, made by Merck Co. as Mevecor, on 6, 505 men and women who showed no signs of heart disease and had "average" cholesterol levels.

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Apparently, Merck-Medco accounted for sales in a way that booked co-payments that consumers pay to pharmacies as revenue for Merck, and then booked an equivalent amount as costs.

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