Drug interactions
Carbamazepine + Isavuconazole
Severity: Contraindicated
Carbamazepine and Isavuconazole: 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
Carbamazepine strongly induces CYP3A4 and can markedly lower isavuconazole concentrations. This may lead to subtherapeutic antifungal exposure and treatment failure in invasive mold infections.
What this interaction means in plain words
Carbamazepine and Isavuconazole 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.
Carbamazepine belongs to Central Nervous System; Isavuconazole belongs to Anti Fungals.
Why it happens
Induction of CYP3A4/5 (and possibly other pathways) by carbamazepine increases isavuconazole clearance.
What to do
Do not coadminister; choose an alternative anticonvulsant or antifungal. If unavoidable, use therapeutic drug monitoring and expert advice.
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 Isavuconazole
- Efavirenz + Isavuconazole Contraindicated
- Etravirine + Isavuconazole Contraindicated
- Isavuconazole + Ketoconazole Contraindicated
- Isavuconazole + Phenobarbitone Contraindicated
- Isavuconazole + Phenytoin Contraindicated
- Isavuconazole + Rifampicin Contraindicated
Other interactions of Carbamazepine
- Artemether / lumefantrine + Carbamazepine Contraindicated
- Cabotegravir + Carbamazepine Contraindicated
- Carbamazepine + Delamanid Contraindicated
- Carbamazepine + Dienogest / estradiol valerate Contraindicated
- Carbamazepine + Doravirine Contraindicated
- Carbamazepine + Elbasvir / grazoprevir Contraindicated
Frequently asked questions
Can I take Carbamazepine with Isavuconazole?
MediHelp rates the interaction as contraindicated. Carbamazepine and Isavuconazole 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. Carbamazepine strongly induces CYP3A4 and can markedly lower isavuconazole concentrations. This may lead to subtherapeutic antifungal exposure and treatment failure in invasive mold infections.
How serious is the interaction between Carbamazepine and Isavuconazole?
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 coadminister; choose an alternative anticonvulsant or antifungal. If unavoidable, use therapeutic drug monitoring and expert advice.
What other medicines interact with Isavuconazole?
MediHelp also lists interactions of Isavuconazole with, for example, Efavirenz, Etravirine, Ketoconazole. The full list is on the Isavuconazole page.
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