The lack of evidence has not stopped doctors from heavily prescribing that drug, whether in a stand-alone form sold as Zetia or as a combination medicine called Vytorin. Aided by extensive consumer advertising, sales of the medicines reached $5.2 billion last year, making them among the best-selling drugs in the world. More than three million people worldwide take either drug every day.
For Widely Used Drug, Question of Usefulness Is Still Lingering
Last week, with an assist from first lady Michelle Obama, the Food and Drug Administration announced...
