Question 1

What is Isavuconazole used for?

Accepted Answer

Isavuconazole is indicated for: Aspergillosis, fungal infections, Invasive aspergillosis, invasive fungal infections, Systemic fungal infections.

Question 2

What routes can Isavuconazole be administered by?

Accepted Answer

Available routes: PO, IV.

Question 3

Which species have cited Isavuconazole dosing data?

Accepted Answer

Isavuconazole dosing in the ExoticRx formulary covers 3 species: Bearded Dragon, Cat (Domestic), Dog (Domestic).

Question 4

Is Isavuconazole a controlled substance?

Accepted Answer

Isavuconazole is not federally scheduled as a controlled substance, but is veterinary prescription only in most jurisdictions.

Question 5

What are the warnings or contraindications for Isavuconazole?

Accepted Answer

Hepatotoxicity — monitor LFTs. QTc shortening (unlike other azoles). Drug interactions via CYP3A4. Limited but growing veterinary data.

Question 6

What are the side effects of Isavuconazole?

Accepted Answer

Reported side effects, adverse reactions, and contraindications for Isavuconazole: Hepatotoxicity — monitor LFTs. QTc shortening (unlike other azoles). Drug interactions via CYP3A4. Limited but growing veterinary data.

Question 7

How does Isavuconazole work?

Accepted Answer

Inhibits lanosterol 14-alpha-demethylase (CYP51), blocking ergosterol synthesis. Broad-spectrum triazole with activity against Aspergillus and Mucorales.

Species	Route	Dose	Frequency	Evidence	Source
Dog (Domestic)	PO	2–5 mg/kg	q24h (after loading)	Moderate	Plumb's Veterinary Drug Handbook, 9th Ed
Cat (Domestic)	PO	2–5 mg/kg	q24h (after loading)	Weak	Plumb's Veterinary Drug Handbook, 9th Ed

Isavuconazole

Drug Class

Routes

Indications

Mechanism of Action

Side effects & warnings

Species with Isavuconazole dosing data (3 dose rules)

Evidence levels across 3 dose rules

Backed by 2 published sources

Sample dosing (2 of 3 cited rules)

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