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Antipsychotics now form the fifth most expensive medication class in the U.S. In 2010, spending was $16.1 billion (aripiprazole, $4.6; quetiapine, $4.4; olanzapine, $3.0 billion [IMS Institute for Healthcare Informatics. The Use of Medicines in the United States: Review of 2010. 2011. Parsippany, NJ]). Meanwhile, prescription of antipsychotics for off-label indications has seen explosive growth. Using industry data, researchers estimated that such prescribing in 2008 occurred in 9 million treatment visits, at an estimated cost of $6 billion, and that 54% of all visits with atypical antipsychotics (AAs) involved off-label uses (Pharmacoepidemiol Drug Saf 20:177).
Anxiety disorder is one area showing growth in off-label applications. Examining…