http://www.deathpenaltyinfo.org/state-lethal-injection
Louisiana 3-drug with sodium thiopental*
Announced change to one-drug procedure using pentobarbital (Baton Rouge Advocate, 2/6/13)
Execution scheduled for 2/13/13 has been stayed. Judge requires additional information on new execution procedure. (AP, 2/7/13)
Announced change to two-drug execution procedure - midazolam and hydromorphone (Times-Picayune, 1/27/14)
Executions on hold per court order until at least January 2018.
Mississippi 3-drug with pentobarbital
Began using pentobarbital in 3-drug protocol on May 10, 2011 (AFP, 5/10/11)
5th U.S. Circuit Court of Appeals has agreed to hear challenge to Mississippi's lethal injection protocol; executions on hold (Associated Press, 8/4/12)
Said it will use pentobarbital from a compounding pharmacy as the first drug in a 3-drug protocol (AP, 3/20/14)
Added midazolam as alternative drug if sodium thiopental or pentobarbital are unavailable. (7/28/15.)
Mississippi Supreme Court issues opinion that allows prisoner to challenge the state's method of execution in state court. (12/15/16.)