three-drug mixture en Kentucky to Change Execution Method <p>Kentucky is switching to a single drug to carry out inmate executions, becoming the latest state to drop a three-drug mixture for lethal injections. New regulations filed today also give the state two drug options, either the anesthetic sodium thiopental or the barbiturate pentobarbital.</p><p> Fri, 20 Jul 2012 16:32:38 +0000 Associated Press 15977 at