Drug interactions
Gepirone + Quinidine
Severity: Contraindicated
Gepirone and Quinidine: 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
Both drugs prolong the QT interval, so combined use raises the risk of torsades de pointes. Quinidine may also raise gepirone levels through CYP3A4 inhibition.
What this interaction means in plain words
Gepirone and Quinidine 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.
Gepirone belongs to Central Nervous System; Quinidine belongs to Anti Parasitic.
Why it happens
Additive QT prolongation, with possible CYP3A4 inhibition increasing gepirone exposure.
What to do
Avoid the combination and choose an antidepressant without QT effect or another antiarrhythmic.
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 Quinidine
- Adagrasib + Quinidine Contraindicated
- Arsenic trioxide + Quinidine Contraindicated
- Artemether / lumefantrine + Quinidine Contraindicated
- Chloroquine + Quinidine Contraindicated
- Dofetilide + Quinidine Contraindicated
- Dronedarone + Quinidine Contraindicated
Other interactions of Gepirone
- Clarithromycin + Gepirone Contraindicated
- Gepirone + Isocarboxazid Contraindicated
- Gepirone + Itraconazole Contraindicated
- Gepirone + Ketoconazole Contraindicated
- Gepirone + Linezolid Contraindicated
- Gepirone + Phenelzine Contraindicated
Frequently asked questions
Can I take Gepirone with Quinidine?
MediHelp rates the interaction as contraindicated. Gepirone and Quinidine 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. Both drugs prolong the QT interval, so combined use raises the risk of torsades de pointes. Quinidine may also raise gepirone levels through CYP3A4 inhibition.
How serious is the interaction between Gepirone and Quinidine?
MediHelp rates it contraindicated, on a four-level scale (minor, moderate, major, contraindicated) based on published labels and references. What to do, in brief: Avoid the combination and choose an antidepressant without QT effect or another antiarrhythmic.
What other medicines interact with Quinidine?
MediHelp also lists interactions of Quinidine with, for example, Adagrasib, Arsenic trioxide, Artemether / lumefantrine. The full list is on the Quinidine page.
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