Drug interactions
Fexinidazole + Olanzapine
Severity: Major
Fexinidazole and Olanzapine: 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 its labeling advises against combining it with other QT-prolonging drugs. Olanzapine may add to this effect and raise arrhythmia risk.
What this interaction means in plain words
Fexinidazole and Olanzapine 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 pharmacodynamic effect on cardiac repolarization.
What to do
Avoid the combination where possible, for example by suspending olanzapine during the short fexinidazole course if feasible. If unavoidable, monitor ECG and correct 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 Olanzapine
Frequently asked questions
Can I take Fexinidazole with Olanzapine?
MediHelp rates the interaction as major. Fexinidazole and Olanzapine 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 its labeling advises against combining it with other QT-prolonging drugs. Olanzapine may add to this effect and raise arrhythmia risk.
How serious is the interaction between Fexinidazole and Olanzapine?
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 the combination where possible, for example by suspending olanzapine during the short fexinidazole course if feasible. If unavoidable, monitor ECG and correct electrolytes.
What other medicines interact with Olanzapine?
MediHelp also lists interactions of Olanzapine with, for example, Amisulpride, Amoxapine, Apomorphine. The full list is on the Olanzapine page.
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