Etisulergine (INNTooltip International Nonproprietary Name; developmental code name CQ-32084 or CQ 32-084) is a drug of the ergoline family described as a dopamine agonist, prolactin inhibitor, and antiparkinsonian agent which was never marketed. It is closely related in chemical structure to lisuride and is also similar in structure to lysergic acid diethylamide (LSD). Etisulergine was first described in the literature by at least 1977.