excitative

from WordNet (r) 3.0 (2006)

excitative
    adj 1: (of drugs e.g.) able to excite or stimulate [syn:
           {excitant}, {excitative}, {excitatory}]

from 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]