Montelukast and Itraconazole Interaction
Drug interaction information between Montelukast and Itraconazole.
Montelukast and Itraconazole have a documented minor interaction in FDA labeling.
FDA drug labeling documents a minor-severity interaction between Montelukast and Itraconazole. This page displays the available source-record category and label text. The category is not an individual risk estimate or medication-combination direction.
How They Interact
These drugs do not significantly change how the body processes each other.
FDA Label Information
DRUG INTERACTIONS No dose adjustment is needed when montelukast sodium is co-administered with theophylline, prednisone, prednisolone, oral contraceptives, terfenadine, digoxin, warfarin, gemfibrozil, itraconazole, thyroid hormones, sedative hypnotics, non-steroidal anti-inflammatory agents, benzodiazepines, decongestants, and Cytochrome P450 (CYP) enzyme inducers [see Clinical Pharmacology (12.3)] .
Montelukast Also Interacts With
- Prednisone minor
- Warfarin minor
- Prednisolone minor
- Digoxin minor
- Theophylline minor
Itraconazole Also Interacts With
- Isavuconazonium major
- Lurasidone major
- Pimozide major
- Methadone major
- Midazolam major
Frequently Asked Questions
What SPL severity band is on file for Montelukast + Itraconazole?
Compiled FDA labeling labels this pair minor. That is a source-record field, not an individual medication-combination decision.
Which drug in this pair has the larger labeled-interaction portfolio?
Itraconazole has 116 labeled pairs on file vs Montelukast's 8. In the minor band specifically: Montelukast has 8 (also Prednisone, Warfarin, Prednisolone, Digoxin); Itraconazole has 77 (also Fluticasone, Meloxicam, Buspirone, Oxycodone).
What mechanism field is on file for Montelukast and Itraconazole?
These drugs do not significantly change how the body processes each other.
Itraconazole carries more major-labeled pairs than Montelukast
SPL source-record counts only. This page's band is minor · classes on file: Montelukast (Leukotriene Receptor Antagonist); Itraconazole (Azole Antifungal).
Itraconazole has 19 major-labeled pairs vs Montelukast's 0. This page itself is in the minor band, not the major band.
0 major · 0 moderate · 8 minor · 8 total
- Other minor peers for Montelukast
- Prednisone
- Warfarin
- Prednisolone
- Digoxin
19 major · 20 moderate · 77 minor · 116 total
- Other minor peers for Itraconazole
- Fluticasone
- Meloxicam
- Buspirone
- Oxycodone
Sources: FDA Drug Labels (SPL) via openFDA (2026). This is for informational purposes only and is not medical advice. This registry does not provide individual medication-combination directions.
Read our methodology - how this data is sourced, computed, and verified.