Miconazole and Ifosfamide Injection: Interaction Details
AI-assisted, pharmacist-reviewed · Source data updated Aug 8, 2026 · Sources: FDA labeling, DDInter 2.0, cited literature
Ifosfamide Injection
Miconazole
How we grade severity & evidence
Severity levels
- Contraindicated: These should generally not be used together.
- Major: Potentially serious — often needs a change or close monitoring.
- Moderate: Can be significant — usually manageable with monitoring.
- Minor: Usually limited clinical impact.
Evidence grades
- Established: Well documented — supported by controlled studies or strong clinical data.
- Probable: Good supporting evidence, though not definitively proven.
- Suspected: Some evidence suggests this interaction, but it is not well established.
- Possible: Limited or conflicting evidence; the interaction may occur.
- Theoretical: Predicted from the drugs' pharmacology; not yet confirmed in people.
Ratings come from the documented interaction literature and are reviewed by a pharmacist. They describe the documented risk of the combination, not what will necessarily happen to you — your dose, timing, and health picture all matter.
What happens
Decreased ifosfamide effectiveness
Interaction Deep Dive
Ifosfamide is a substrate of CYP3A4. Concomitant use of ifosfamide and a CYP3A4 inhibitor may decrease the metabolism of ifosfamide to its active alkylating metabolites, possibly reducing the effectiveness of ifosfamide1.
Why it happens (mechanism)
Inhibition of CYP3A4-mediated metabolism of ifosfamide to active metabolites
Common questions
Can I take Miconazole and Ifosfamide Injection together?
Decreased ifosfamide effectiveness Always confirm with your pharmacist or prescriber before making any change.
How serious is the Miconazole and Ifosfamide Injection interaction?
It is rated major. Potentially serious — often needs a change or close monitoring.
How quickly could this interaction happen?
The documented onset is "unspecified". The timing of this interaction is not well characterized.
How strong is the evidence for this interaction?
The evidence is graded "theoretical". Predicted from the drugs' pharmacology; not yet confirmed in people.
Questions for your pharmacist
- Does my dose of Miconazole or Ifosfamide Injection need adjusting while I take them together?
- What symptoms should prompt me to call you or my prescriber right away?
- Does the timing of my doses matter for this combination?
- Is there a safer alternative to one of these medications for me?
References (1)
- Product Information: Ifosfamide intravenous injection powder, ifosfamide intravenous injection powder. Baxter Healthcare Corporation (per FDA), Deerfield, IL, 2014. DailyMed
Keep reading about Ifosfamide Injection
Keep reading about Miconazole
These medications also interact with supplements
Prescription drugs aren't the whole picture — herbal and dietary supplements can interact with them too. From the evidence-graded Natural Medicines database:
major · moderate · minor — check everything you take with our drug–supplement interaction checker.
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