Express Scripts backs Imprimis' $1 pill over $750 Daraprim
December 01, 2015 at 00:01 AM EST
NEW YORK, Dec 1 (Reuters) - Express Scripts Holding Co , the largest U.S. drug benefit manager, has improved access to a much cheaper competitor to Daraprim, an anti-infective medication that became a poster child for excessive drug pricing after its cost rose 5000 percent overnight.