Nasal aspergillosis and penicilliosis in dogs: results of treatment with thiabendazole.

Forty-seven dogs with nasal aspergillosis or penicilliosis were treated with thiabendazole (20 mg/kg orally for 6 weeks). Nasal turbinectomy was performed on 26 of the dogs. Six months or more later, 43% of the dogs were clinically normal or considerably improved; results were better in dogs not treated surgically. It was concluded that thiabendazole at a dosage of 20 mg/kg is not an effective treatment for nasal aspergillosis or penicilliosis in dogs.