Drug interactions
Mefloquine + Paliperidone
Severity: Major
Mefloquine and Paliperidone: 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
Paliperidone can prolong the QT interval, and mefloquine has similar effects. The combination may increase the risk of torsades de pointes, particularly with renal impairment, bradycardia or electrolyte disturbance.
What this interaction means in plain words
Mefloquine and Paliperidone 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.
Mefloquine belongs to Anti Parasitic; Paliperidone belongs to Central Nervous System.
Why it happens
Additive blockade of cardiac potassium channels causing QT prolongation.
What to do
Avoid the combination if possible and use another antimalarial. If needed, obtain baseline and follow-up ECGs and correct potassium and magnesium.
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 Mefloquine
- Arsenic trioxide + Mefloquine Contraindicated
- Dronedarone + Mefloquine Contraindicated
- Ibutilide + Mefloquine Contraindicated
- Levoketoconazole + Mefloquine Contraindicated
- Mefloquine + Nilotinib Contraindicated
- Mefloquine + Pimozide Contraindicated
Other interactions of Paliperidone
- Ibutilide + Paliperidone Contraindicated
- Paliperidone + Pimozide Contraindicated
- Paliperidone + Vandetanib Contraindicated
- Adagrasib + Paliperidone Major
- Amiodarone + Paliperidone Major
- Amisulpride + Paliperidone Major
Frequently asked questions
Can I take Mefloquine with Paliperidone?
MediHelp rates the interaction as major. Mefloquine and Paliperidone 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. Paliperidone can prolong the QT interval, and mefloquine has similar effects. The combination may increase the risk of torsades de pointes, particularly with renal impairment, bradycardia or electrolyte disturbance.
How serious is the interaction between Mefloquine and Paliperidone?
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 if possible and use another antimalarial. If needed, obtain baseline and follow-up ECGs and correct potassium and magnesium.
What other medicines interact with Mefloquine?
MediHelp also lists interactions of Mefloquine with, for example, Arsenic trioxide, Dronedarone, Ibutilide. The full list is on the Mefloquine page.
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