parasiticidal

from WordNet (r) 3.0 (2006)

parasiticidal
    adj 1: capable of expelling or destroying parasitic worms [syn:
           {anthelmintic}, {anthelminthic}, {helminthic},
           {parasiticidal}]

from The Collaborative International Dictionary of English v.0.48

parasiticidal \par`a*sit`i*cid"al\ adj.
   Capable of destroying parasites, especially capable of
   expelling or destroying parasitic worms.

   Syn: anthelmintic, anthelminthic, helminthic.
        [WordNet 1.5 +PJC]