The Curious Case of Duexis Approximately 13% of health care expenditures in the United States are for prescription drugs pending, nearly $420 billion in 2015. 1 High-priced pharmaceuticals, therapies that cost more than $600 per month, are projected to eclipse 50% of total drug spending by 2018.2 Price increases for these therapies have been persistent, with unit costs increasing 164% between 2008 and 2015. 2 Pharmacy benefit managers are third-party administrators that proc