<prompt> who introduced antipsychotic chlorpromazinedelay and dennikerjohn f cademaslowerik erikson  <response>: History CHARPENTEIR produced chlorpromazine LABORIT ,surgeon used in his patients to reduce anxiety DELAY AND DENNIKER used in psychiatric patients It comes under the group of PHENOTHIAZINES Reserpine, derived from rafulwia alkaloids Indian involved here Ref. kaplon and sadock, synopsis of psychiatry, 11 th edition, pg no. 935 