Drug interactions
Fexinidazole + Granisetron
Severity: Major
Fexinidazole and Granisetron: 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 is labeled to cause QT prolongation and should not be given with other QT-prolonging drugs. Granisetron adds to this effect and may increase the risk of torsades de pointes.
What this interaction means in plain words
Fexinidazole and Granisetron 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 QT prolongation.
What to do
Avoid the combination and use an antiemetic without QT effect. If unavoidable, obtain ECG monitoring and correct potassium and magnesium before and during therapy.
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 Granisetron
- Apomorphine + Granisetron Contraindicated
- Amiodarone + Granisetron Major
- Amisulpride + Granisetron Major
- Arsenic trioxide + Granisetron Major
- Artemether / lumefantrine + Granisetron Major
- Artemether + Granisetron Major
Frequently asked questions
Can I take Fexinidazole with Granisetron?
MediHelp rates the interaction as major. Fexinidazole and Granisetron 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 is labeled to cause QT prolongation and should not be given with other QT-prolonging drugs. Granisetron adds to this effect and may increase the risk of torsades de pointes.
How serious is the interaction between Fexinidazole and Granisetron?
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 and use an antiemetic without QT effect. If unavoidable, obtain ECG monitoring and correct potassium and magnesium before and during therapy.
What other medicines interact with Granisetron?
MediHelp also lists interactions of Granisetron with, for example, Apomorphine, Amiodarone, Amisulpride. The full list is on the Granisetron page.
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