Drug interactions
Clotrimazole + Mobocertinib
Severity: Major
Clotrimazole and Mobocertinib: major 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
Clotrimazole may increase mobocertinib exposure, raising the risk of QT prolongation and torsades de pointes.
What this interaction means in plain words
Clotrimazole and Mobocertinib can interact in a way that may be serious. Using them together is sometimes necessary, but it needs a deliberate decision by the prescriber, a plan for monitoring, and clear advice on the warning signs to watch for.
Why it happens
Clotrimazole inhibits CYP3A4, increasing mobocertinib concentrations, with additive QT liability.
What to do
Avoid systemic clotrimazole and use an alternative. If unavoidable, reduce the mobocertinib dose per labeling and monitor QTc and electrolytes.
What to ask your pharmacist
- Does the benefit of taking both outweigh the risk in my case?
- Do I need any blood test, ECG or other check while on both?
- What early warning signs should I watch for, and what should I do if they appear?
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Other interactions of Clotrimazole
- Clotrimazole + Lomitapide Major
- Clotrimazole + Mavacamten Major
- Clotrimazole + Voclosporin Major
- Bosutinib + Clotrimazole Moderate
- Cannabidiol + Clotrimazole Moderate
- Clotrimazole + Cyclosporine Moderate
Frequently asked questions
Can I take Clotrimazole with Mobocertinib?
MediHelp rates the interaction as major. Clotrimazole and Mobocertinib can interact in a way that may be serious. Using them together is sometimes necessary, but it needs a deliberate decision by the prescriber, a plan for monitoring, and clear advice on the warning signs to watch for. Clotrimazole may increase mobocertinib exposure, raising the risk of QT prolongation and torsades de pointes.
How serious is the interaction between Clotrimazole and Mobocertinib?
MediHelp rates it major, on a four-level scale (minor, moderate, major, contraindicated) based on published labels and references. What to do, in brief: Avoid systemic clotrimazole and use an alternative. If unavoidable, reduce the mobocertinib dose per labeling and monitor QTc and electrolytes.
What other medicines interact with Clotrimazole?
MediHelp also lists interactions of Clotrimazole with, for example, Lomitapide, Mavacamten, Voclosporin. The full list is on the Clotrimazole page.
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