Montelukast and Prednisone Interaction
Drug interaction information between Montelukast and Prednisone.
Montelukast and Prednisone have a documented minor interaction in FDA labeling.
FDA drug labeling documents a minor-severity interaction between Montelukast and Prednisone. Major interactions are generally avoided, moderate ones may need monitoring or a dose adjustment, and minor ones are usually low-risk. This page shows the documented mechanism and guidance. Label-documented interactions are not a complete safety review, so always confirm your own medications with a pharmacist or doctor. Educational information, not medical advice.
How They Interact
These two medicines do not have a known interaction that changes how they work in your body.
What To Do
You can take these medications together at your normal doses without needing any adjustments.
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
- Warfarin minor
- Prednisolone minor
- Itraconazole minor
- Digoxin minor
- Theophylline minor
Prednisone Also Interacts With
- Theophylline major
- Abiraterone minor
- Darunavir minor
- Dolutegravir minor
- Fluconazole minor
Frequently Asked Questions
Can I take Montelukast and Prednisone together?
This is a minor interaction. You can take these medications together at your normal doses without needing any adjustments.
How serious is the interaction between Montelukast and Prednisone?
This interaction is classified as "minor" severity by the FDA. Minor interactions are unlikely to cause significant problems but should still be mentioned to your healthcare provider.
Why do Montelukast and Prednisone interact?
These two medicines do not have a known interaction that changes how they work in your body.
Understanding the Montelukast and Prednisone Interaction
FDA-approved prescribing information for these two drugs flags their combination as a minor-severity interaction. Montelukast belongs to the Leukotriene Receptor Antagonist class and Prednisone belongs to the Corticosteroid class - two categories that can collide when co-prescribed. The mechanism described in FDA labeling is: These two medicines do not have a known interaction that changes how they work in your body. Severity tiers matter: major flags generally advise avoidance, moderate flags often require monitoring or dose adjustment, and minor flags may only call for awareness.
Context around a specific patient determines real-world impact. Montelukast has 8 total documented interactions on file in this dataset, and Prednisone has 9. Each additional medication compounds the interaction surface, which is why pharmacists run full-profile checks rather than evaluating one pair at a time. FDA-derived guidance for this pair is: You can take these medications together at your normal doses without needing any adjustments. Timing of doses, renal and hepatic function, age, and other concurrent prescriptions all shape whether a labeled interaction matters clinically.
An interaction flag is not a verdict. A large share of labeled interactions are managed routinely in clinical practice, the fix may be as simple as spacing doses or adding a monitoring test. Others require the prescriber to choose a different medication entirely. This page surfaces FDA-sourced labeling and openFDA data for educational purposes only; it is not medical advice and cannot account for your full clinical picture. Never start, stop, or adjust either Montelukast or Prednisone based on a web page, speak with your prescriber or pharmacist before making any change.
Sources: FDA Drug Labels (SPL) via openFDA (2026). This is for informational purposes only and is not medical advice. Always consult your healthcare provider about drug interactions.
Read our methodology - how this data is sourced, computed, and verified.