The U.S. Department of Justice has begun investigating the conduct of Merck & Co. Inc. and Schering-Plough Corp. in the marketing of the cholesterol drug Vytorin, according to a regulatory filing.
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The U.S. Department of Justice has begun investigating the conduct of Merck & Co. Inc. and Schering-Plough Corp. in the marketing of the cholesterol drug Vytorin, according to a regulatory filing.