Four years after the discovery of counterfeit Lipitor led to the biggest drug recall in U.S. history, the world's top pharmaceutical companies are experimenting with new technologies to battle a rising tide of phony drugs that are making their way into medicine cabinets.

Fake medicines are a $32 billion global business, according to the World Health Organization, and the Food and Drug Administration said it conducted 54 investigations last year — almost double the number in 2005.

BY GEORGE E. JORDAN
22 October 2007

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