Article history The objective of this work was to evaluate the efficacy of a topical formulation containing levofloxacin, miconazole, and dexamethasone in the treatment of external otitis in cats. Eighteen cats showing clinical signs of external otitis-in the video otoscopy examination and cerumen cytology-were evaluated. The animals were divided into three groups of six animals. Group 1 (G1) was the control group; Group 2 (G2) was treated with a combination of 0.5% levofloxacin, 2% miconazole, and 0.02% dexamethasone, using distilled water as the vehicle; and Group 3 (G3) was treated with the same combination, using vegetable glycerin as the vehicle. The animals were reassessed weekly; animals in G1 had no improvement of clinical signs of otitis or in the findings in the cerumen cytology. However, animals in G2 and G3 showed improvement of clinical signs, and control of yeasts and/or bacteria in the cytological examination of the ear after seven days of treatment. Based on the results, the formulation containing the combination of levofloxacin, miconazole, and dexamethasone was effective in controlling the perpetuating factors of external otitis in cats.
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