The Collaborative International Dictionary of English v.0.48:
Excitative \Ex*cit"a*tive\, a. [Cf. F. excitatif.] Having power to excite; tending or serving to excite; excitatory. --Barrow. [1913 Webster]WordNet (r) 3.0 (2006):
excitative adj 1: (of drugs e.g.) able to excite or stimulate [syn: excitant, excitative, excitatory]