Systemic Fungal Infections in Russian Tortoises

Reptile · Testudo horsfieldii · typical adult weight 0.23–0.91 kg

2 cited drugs treat Systemic Fungal Infections in russian tortoises: Ketoconazole, Voriconazole.

Disseminated mycoses including blastomycosis, coccidioidomycosis, histoplasmosis, cryptococcosis, and aspergillosis. Triazoles (itraconazole, voriconazole) are first-line for most; therapeutic drug monitoring is standard in psittacine and prolonged courses.

The overview above describes Systemic Fungal Infections across species; the citations below are the ExoticRx dose rules scoped to russian tortoises — a reference list, not new species-specific clinical guidance.

Ketoconazole(Nizoral)

Antifungal

Route	Dose	Frequency	Indication	Evidence	Source
PO	15–30 mg/kg	q 24 h for 14–28 d	Fungal infections	Weak	Merck Veterinary Manual. Antimicrobial Drugs Used in Reptiles (dosing table). Rahway (NJ): Merck & Co.; accessed 2026. URL: https://www.merckvetmanual.com/multimedia/table/antimicrobial-drugs-used-in-reptiles

Full Ketoconazole dosing in Russian Tortoises →Calculate for this russian tortoise →

Voriconazole(Vfend)

Antifungal

Route	Dose	Frequency	Indication	Evidence	Source
PO	10 mg/kg	not specified	Fungal infections	Weak	Merck Veterinary Manual. Antimicrobial Drugs Used in Reptiles (dosing table). Rahway (NJ): Merck & Co.; accessed 2026. URL: https://www.merckvetmanual.com/multimedia/table/antimicrobial-drugs-used-in-reptiles

Full Voriconazole dosing in Russian Tortoises →Calculate for this russian tortoise →

All drugs cited for Systemic Fungal Infections →All drugs for Russian Tortoises →

Sourced from published veterinary references; awaiting credentialed clinical reviewer. See our editorial process. Reference only — not veterinary advice. Verify against current literature before clinical use.