An African grey parrot (Psittacus erithacus) is presented to your practice with severe dyspnoea, inappetence and loss of body condition. Following a diagnostic workup, aspergillosis of the air-sacs is diagnosed. Itraconazole (Fungitraxx 10 mg/ml oral solution for ornamental birds, Pet Life International Ltd, UK) is licensed for the treatment of aspergillosis in birds, but itraconazole toxicity has been reported in this species. Voriconazole (various manufacturers) is an alternative antifungal agent, not licensed for use in veterinary species, that can be prescribed under the Cascade. You wonder what the most appropriate dose would be to treat this parrot.
O'Connor, L., Reyher, K., Place, E. J., & Abou-Zahr, T. (2018). What is an appropriate dose of voriconazole for the treatment of aspergillosis in African grey parrots (Psittacus erithacus)? Veterinary Record, 183(4), 131-132. https://doi.org/10.1136/vr.k3154