ClinQuiz
2C) Incorrect. Although widely used extralabel for treating giardiasis in companion animals, the efficacy of metronidazole for treating Giardia species infections in dogs is poor.6,9 In addition, this drug has been associated with neurotoxicosis in dogs.9 However, a symptomatic response to metronidazole administration along with the impression that efficacy may be enhanced when it is combined with a more effective drug leads some practitioners to administer it with fenbendazole in cases of giardiasis that are refractory to fenbendazole treatment alone.10