Drug interactions
Chloroquine + Mirtazapine
Severity: Moderate
Chloroquine and Mirtazapine: moderate 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
Chloroquine is a recognized QT-prolonging drug and mirtazapine has been linked to QT prolongation, particularly in overdose or at higher doses. Combined use may increase the risk of torsades de pointes.
What this interaction means in plain words
Chloroquine and Mirtazapine can affect each other. The combination is often manageable, but it may need a change of dose, a change of timing, or extra checks while both are taken.
Chloroquine belongs to Anti Parasitic; Mirtazapine belongs to Central Nervous System.
Why it happens
Additive prolongation of ventricular repolarization via cardiac potassium channel effects.
What to do
Check a baseline ECG and correct hypokalemia and hypomagnesemia before combining. Monitor QTc and avoid high mirtazapine doses or other QT-prolonging additions.
What to ask your pharmacist
- Should I take them at different times of day?
- Does the dose of either medicine need to change?
- Is there anything I should avoid, such as alcohol or certain foods, while on both?
Pro+ members
Unlock the full page
Create an account and start a Pro+ trial to unlock the full management advice for Chloroquine and Mirtazapine, the additional notes, the evidence detail and the whole-prescription interaction checker.
- Full clinical management advice
- Additional notes
- Evidence detail
- Interaction checker for a whole prescription
Try Pro+ free for 7 days on the web. No card needed.
Other interactions of Chloroquine
- Chloroquine + Cisapride Contraindicated
- Chloroquine + Dofetilide Contraindicated
- Chloroquine + Dronedarone Contraindicated
- Chloroquine + Droperidol Contraindicated
- Chloroquine + Panobinostat Contraindicated
- Chloroquine + Pimozide Contraindicated
Other interactions of Mirtazapine
- Isocarboxazid + Mirtazapine Contraindicated
- Mirtazapine + Phenelzine Contraindicated
- Mirtazapine + Pimozide Contraindicated
- Mirtazapine + Procarbazine Contraindicated
- Mirtazapine + Rasagiline Contraindicated
- Mirtazapine + Selegiline Contraindicated
Frequently asked questions
Can I take Chloroquine with Mirtazapine?
MediHelp rates the interaction as moderate. Chloroquine and Mirtazapine can affect each other. The combination is often manageable, but it may need a change of dose, a change of timing, or extra checks while both are taken. Chloroquine is a recognized QT-prolonging drug and mirtazapine has been linked to QT prolongation, particularly in overdose or at higher doses. Combined use may increase the risk of torsades de pointes.
How serious is the interaction between Chloroquine and Mirtazapine?
MediHelp rates it moderate, on a four-level scale (minor, moderate, major, contraindicated) based on published labels and references. What to do, in brief: Check a baseline ECG and correct hypokalemia and hypomagnesemia before combining. Monitor QTc and avoid high mirtazapine doses or other QT-prolonging additions.
What other medicines interact with Chloroquine?
MediHelp also lists interactions of Chloroquine with, for example, Cisapride, Dofetilide, Dronedarone. The full list is on the Chloroquine page.
Full monographs, dosing and an interaction checker in the MediHelp app
Open the complete reference, check multi-drug interactions and use dosing tools in the MediHelp app.
