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Prednisone and Montelukast Interaction

Drug interaction information between Prednisone and Montelukast.

Prednisone and Montelukast have a documented minor interaction in FDA labeling.

FDA drug labeling documents a minor-severity interaction between Prednisone and Montelukast. 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.

Drug A

Prednisone

Corticosteroid

Drug B

Montelukast

Leukotriene Receptor Antagonist

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)] .

Frequently Asked Questions

Can I take Prednisone and Montelukast 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 Prednisone and Montelukast?

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 Prednisone and Montelukast interact?

These two medicines do not have a known interaction that changes how they work in your body.

Understanding the Prednisone and Montelukast Interaction

FDA-approved prescribing information for these two drugs flags their combination as a minor-severity interaction. Prednisone belongs to the Corticosteroid class and Montelukast belongs to the Leukotriene Receptor Antagonist 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. Prednisone has 9 total documented interactions on file in this dataset, and Montelukast has 8. 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 Prednisone or Montelukast 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.