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- n. A benzimidazole anthelminthic drug used in horses and some domestic pets.
Sorry, no etymologies found.
However, resistance to two of the three dewormer drug classes -- benzimidazoles (i.e., fenbendazole and oxibendazole) and pyrimidines (i.e., pyrantel) has been documented, and there have been some early indications of resistance to macrocyclic lactones (ivermectin/moxidectin) on a few farms.
Other members of the family quickly followed: cambendazole, oxfendazole, fenbendazole, oxibendazole and mebendazole.
The label will likely show the active ingredient as fenbendazole, oxfendazole or oxibendazole.