Drug interactions
Apalutamide + Isavuconazonium
Severity: Contraindicated
Apalutamide and Isavuconazonium: 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
Apalutamide lowers the exposure to isavuconazole, the active moiety of isavuconazonium, which may cause failure of antifungal treatment in serious invasive infections.
What this interaction means in plain words
Apalutamide and Isavuconazonium 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.
Apalutamide belongs to Endocrine; Isavuconazonium belongs to Anti Fungals.
Why it happens
Apalutamide is a strong CYP3A4 inducer that increases the metabolism of isavuconazole, a CYP3A4 substrate.
What to do
Do not combine; select an alternative antifungal not dependent on CYP3A4 or an alternative to apalutamide. If unavoidable, monitor clinical response closely.
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 Apalutamide
- Apalutamide + Cabotegravir Contraindicated
- Apalutamide + Cobicistat Contraindicated
- Apalutamide + Doravirine Contraindicated
- Apalutamide + Elbasvir / grazoprevir Contraindicated
- Apalutamide + Ensitrelvir Contraindicated
- Apalutamide + Fostemsavir Contraindicated
Other interactions of Isavuconazonium
- Amobarbital + Isavuconazonium Contraindicated
- Carbamazepine + Isavuconazonium Contraindicated
- Cisapride + Isavuconazonium Contraindicated
- Efavirenz + Isavuconazonium Contraindicated
- Enzalutamide + Isavuconazonium Contraindicated
- Isavuconazonium + Ketoconazole Contraindicated
Frequently asked questions
Can I take Apalutamide with Isavuconazonium?
MediHelp rates the interaction as contraindicated. Apalutamide and Isavuconazonium 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. Apalutamide lowers the exposure to isavuconazole, the active moiety of isavuconazonium, which may cause failure of antifungal treatment in serious invasive infections.
How serious is the interaction between Apalutamide and Isavuconazonium?
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; select an alternative antifungal not dependent on CYP3A4 or an alternative to apalutamide. If unavoidable, monitor clinical response closely.
What other medicines interact with Apalutamide?
MediHelp also lists interactions of Apalutamide with, for example, Cabotegravir, Cobicistat, Doravirine. The full list is on the Apalutamide page.
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