Credit: FILE - In this June 14, 2011, file photo, bottles of prescription drugs: Lipitor, TriCor, Plavix, Singulair, Lexapro and Avapro are displayed at Medco Health Solutions Inc., in Willingboro, N.J. U.S. spending on prescription drugs rose 8.5 percent last year, slightly less than in 2014, driven mainly by growing use of ultra-expensive new drugs and price hikes on other medicines. A report from data firm IMS Health estimates patients, insurers, government programs and other payers spent a combined $309.5 billion last year on prescription medicines. (AP Photo/Matt Rourke, File)
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