Drug interactions
Asenapine transdermal + Primaquine
Severity: Moderate
Asenapine transdermal and Primaquine: 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
Both agents may prolong the QT interval. Combined use may increase the risk of ventricular arrhythmias, particularly with other risk factors.
What this interaction means in plain words
Asenapine transdermal and Primaquine 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.
Why it happens
Additive effects on cardiac repolarization.
What to do
Obtain a baseline ECG and monitor QTc and electrolytes during the short primaquine course. Avoid in patients with congenital long QT or other QT-prolonging drugs.
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?
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Other interactions of Primaquine
- Pimozide + Primaquine Contraindicated
- Amiodarone + Primaquine Major
- Amisulpride + Primaquine Major
- Anagrelide + Primaquine Major
- Arsenic trioxide + Primaquine Major
- Asenapine + Primaquine Major
Frequently asked questions
Can I take Asenapine transdermal with Primaquine?
MediHelp rates the interaction as moderate. Asenapine transdermal and Primaquine 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. Both agents may prolong the QT interval. Combined use may increase the risk of ventricular arrhythmias, particularly with other risk factors.
How serious is the interaction between Asenapine transdermal and Primaquine?
MediHelp rates it moderate, on a four-level scale (minor, moderate, major, contraindicated) based on published labels and references. What to do, in brief: Obtain a baseline ECG and monitor QTc and electrolytes during the short primaquine course. Avoid in patients with congenital long QT or other QT-prolonging drugs.
What other medicines interact with Primaquine?
MediHelp also lists interactions of Primaquine with, for example, Pimozide, Amiodarone, Amisulpride. The full list is on the Primaquine page.
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