Drug interactions
Artemether + Ranolazine
Severity: Major
Artemether and Ranolazine: 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
Artemether (usually with lumefantrine) and ranolazine both prolong the QTc interval. Together they increase the risk of serious ventricular arrhythmias.
What this interaction means in plain words
Artemether and Ranolazine 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 QT prolongation; artemether is also a CYP3A4 substrate and weak inhibitor.
What to do
Avoid concurrent use if possible, for example by holding ranolazine during the short antimalarial course. If unavoidable, obtain a baseline 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 Ranolazine
- Adagrasib + Ranolazine Contraindicated
- Amobarbital + Ranolazine Contraindicated
- Apalutamide + Ranolazine Contraindicated
- Butabarbital + Ranolazine Contraindicated
- Carbamazepine + Ranolazine Contraindicated
- Clarithromycin + Ranolazine Contraindicated
Frequently asked questions
Can I take Artemether with Ranolazine?
MediHelp rates the interaction as major. Artemether and Ranolazine 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. Artemether (usually with lumefantrine) and ranolazine both prolong the QTc interval. Together they increase the risk of serious ventricular arrhythmias.
How serious is the interaction between Artemether and Ranolazine?
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 concurrent use if possible, for example by holding ranolazine during the short antimalarial course. If unavoidable, obtain a baseline ECG and correct electrolytes.
What other medicines interact with Ranolazine?
MediHelp also lists interactions of Ranolazine with, for example, Adagrasib, Amobarbital, Apalutamide. The full list is on the Ranolazine page.
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