antifilarial

adjective

an·​ti·​fi·​lar·​i·​al -fə-ˈlar-ē-əl, -ˈler- 

: tending to destroy filarial worms or to inhibit their growth

By 1978, the Merck pharmaceutical laboratories had isolated an effective antifilarial antibiotic, called ivermectin, which was extracted from a species of fungus.

—Stanley M. Aronson, The Providence (Rhode Island) Journal-Bulletin

also : produced in response to filarial infection

… 11% of U.S. service personnel who were stationed in filariasis-endemic regions of South Vietnam had antifilarial antibodies.

—Wayne Melrose and Peter A. Leggat, Military Medicine

antifilarial noun

… an attempt to develop ideal antifilarials capable of eliminating both the microfilariae and adult worms with no toxic effect on the host …

—C. R. Pfaltz et al., Progress in Drug Research