Brand Names of Itraconazole
SPORANOX® is the FDA-approved brand name for itraconazole 1. This is the innovator/reference product available in both oral capsule and oral solution formulations 1.
Available Formulations
The FDA-approved SPORANOX® brand comes in two distinct formulations 1:
- SPORANOX® Capsules: 100 mg conventional capsules
- SPORANOX® Oral Solution: 10 mg/mL itraconazole solubilized with hydroxypropyl-β-cyclodextrin
These two formulations are NOT interchangeable - the oral solution has superior bioavailability compared to capsules 1.
Generic and Alternative Formulations
Beyond the innovator brand, several formulations exist:
- Generic itraconazole capsules: Multiple manufacturers produce generic versions with variable quality 2, 3, 4, 5
- SUBA-itraconazole ("super bioavailability"): An FDA-approved alternative formulation with enhanced bioavailability that addresses absorption concerns of conventional capsules, allowing lower dosing while achieving similar serum concentrations 6
Critical Quality Considerations
The quality and bioavailability of itraconazole brands varies dramatically, which directly impacts clinical outcomes 3, 4. Research demonstrates:
- The innovator SPORANOX® achieved therapeutic drug levels (≥0.5 mg/L) in 73% of patients at 2 weeks, compared to only 29% with generic brands 3
- Compounded itraconazole from bulk powder should be avoided entirely - 95% of patients had subtherapeutic levels, and all cats tested had undetectable concentrations 4
- Generic pelletized formulations showed comparable efficacy to brand name in veterinary studies 4
- Morphometric analysis reveals significant variation in pellet count (ranging from 109 to 856 pellets per capsule), size, uniformity, and presence of amorphous material or "dummy pellets" among different brands 2, 5
Therapeutic drug monitoring is essential when using itraconazole capsules (any brand) due to erratic oral bioavailability 7, 6. Target trough concentrations are 0.5-1.0 mg/L for prophylaxis and 1-2 mg/L for treatment of invasive infections 6.