Merger that created CVS Caremark is probed

CVS Caremark Corp. is being investigated by a multi-state task force looking into the consequences of the company’s 2007 purchase of Caremark Rx Inc., Florida’s attorney general’s office said Wednesday.

Florida is conducting a review of the merger that created the largest U.S. supplier of prescription drugs, the state attorney general’s office said. Florida is working with other states, the office said.

The Caremark unit provides pharmacy-benefits management to employers and accounted for about half of the company’s 2009 sales of $98.7 billion.

A CVS spokeswoman declined to comment.