Used primarily as a veterinary anthelmintic, effective against a range of parasitic worms in livestock, especially liver flukes in sheep and cattle. Commonly applied in the control of Fasciola hepatica, including immature and adult stages. Often formulated in oral drenches or pour-on preparations. Also shows activity against certain external parasites like lice and mites. Investigated for potential antiviral and antitumor applications in research settings, though not approved for human use.