Drug interactions
Itraconazole + Levoketoconazole
Severity: Contraindicated
Itraconazole and Levoketoconazole: contraindicated interaction.
Last updated
For healthcare professionals — reference only. This page is a brief summary, not medical advice and not a substitute for official labeling or clinical judgement. Always verify before prescribing or dispensing.
Summary
Both are strong CYP3A4 inhibitors and QT-prolonging azoles, so combined use may raise exposure to each and increase the risk of arrhythmia and hepatotoxicity. There is no therapeutic reason to combine two systemic azoles.
What this interaction means in plain words
Itraconazole and Levoketoconazole are not normally used together. Taking them at the same time is expected to cause harm or make one of them unsafe, so a different medicine is usually chosen for one of the two.
Itraconazole belongs to Anti Fungals; Levoketoconazole belongs to Endocrine.
Why it happens
Mutual CYP3A4 inhibition with additive QT prolongation.
What to do
Do not combine. Choose a single azole or alternative therapy.
What to ask your pharmacist
- Is there an alternative to one of these two medicines for me?
- If both are essential, who is monitoring me and how often?
- Which symptoms mean I should stop and seek help straight away?
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Other interactions of Itraconazole
- Alfuzosin + Itraconazole Contraindicated
- Alprazolam + Itraconazole Contraindicated
- Avanafil + Itraconazole Contraindicated
- Conivaptan + Itraconazole Contraindicated
- Dihydroergotamine intranasal + Itraconazole Contraindicated
- Dihydroergotamine + Itraconazole Contraindicated
Other interactions of Levoketoconazole
- Alfuzosin + Levoketoconazole Contraindicated
- Alprazolam + Levoketoconazole Contraindicated
- Amiodarone + Levoketoconazole Contraindicated
- Avanafil + Levoketoconazole Contraindicated
- Cisapride + Levoketoconazole Contraindicated
- Clarithromycin + Levoketoconazole Contraindicated
Frequently asked questions
Can I take Itraconazole with Levoketoconazole?
MediHelp rates the interaction as contraindicated. Itraconazole and Levoketoconazole are not normally used together. Taking them at the same time is expected to cause harm or make one of them unsafe, so a different medicine is usually chosen for one of the two. Both are strong CYP3A4 inhibitors and QT-prolonging azoles, so combined use may raise exposure to each and increase the risk of arrhythmia and hepatotoxicity. There is no therapeutic reason to combine two systemic azoles.
How serious is the interaction between Itraconazole and Levoketoconazole?
MediHelp rates it contraindicated, on a four-level scale (minor, moderate, major, contraindicated) based on published labels and references. What to do, in brief: Do not combine. Choose a single azole or alternative therapy.
What other medicines interact with Itraconazole?
MediHelp also lists interactions of Itraconazole with, for example, Alfuzosin, Alprazolam, Avanafil. The full list is on the Itraconazole page.
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