Drug interactions
Fexinidazole + Quetiapine
Severity: Major
Fexinidazole and Quetiapine: 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
Fexinidazole can prolong the QT interval and inhibits CYP3A4, which raises quetiapine exposure. Together these effects increase the risk of QT prolongation, torsades de pointes and excess sedation.
What this interaction means in plain words
Fexinidazole and Quetiapine 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
Additive QT prolongation plus CYP3A4 inhibition reducing quetiapine clearance.
What to do
Avoid coadministration where possible, or temporarily hold or reduce quetiapine during the fexinidazole course. If both are used, monitor ECG, electrolytes and sedation.
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 Quetiapine
- Adagrasib + Quetiapine Major
- Amiodarone + Quetiapine Major
- Amisulpride + Quetiapine Major
- Amoxapine + Quetiapine Major
- Anagrelide + Quetiapine Major
- Apalutamide + Quetiapine Major
Frequently asked questions
Can I take Fexinidazole with Quetiapine?
MediHelp rates the interaction as major. Fexinidazole and Quetiapine 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. Fexinidazole can prolong the QT interval and inhibits CYP3A4, which raises quetiapine exposure. Together these effects increase the risk of QT prolongation, torsades de pointes and excess sedation.
How serious is the interaction between Fexinidazole and Quetiapine?
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 coadministration where possible, or temporarily hold or reduce quetiapine during the fexinidazole course. If both are used, monitor ECG, electrolytes and sedation.
What other medicines interact with Quetiapine?
MediHelp also lists interactions of Quetiapine with, for example, Adagrasib, Amiodarone, Amisulpride. The full list is on the Quetiapine page.
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