Drug interactions
Escitalopram + Primaquine
Severity: Moderate
Escitalopram 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
Escitalopram causes dose-dependent QT prolongation and primaquine may add to this effect. The risk of arrhythmia is greater at higher escitalopram doses and in patients with cardiac risk factors.
What this interaction means in plain words
Escitalopram 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.
Escitalopram belongs to Central Nervous System; Primaquine belongs to Anti Parasitic.
Why it happens
Additive QTc prolongation through pharmacodynamic effects.
What to do
Obtain a baseline ECG, correct potassium and magnesium, and keep the escitalopram dose at the lowest effective level. Repeat the ECG during co-therapy in patients with cardiac risk factors.
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 Escitalopram and Primaquine, 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 Primaquine
- Pimozide + Primaquine Contraindicated
- Amiodarone + Primaquine Major
- Amisulpride + Primaquine Major
- Anagrelide + Primaquine Major
- Arsenic trioxide + Primaquine Major
- Asenapine + Primaquine Major
Other interactions of Escitalopram
- Cisapride + Escitalopram Contraindicated
- Citalopram + Escitalopram Contraindicated
- Escitalopram + Isocarboxazid Contraindicated
- Escitalopram + Methylene blue Contraindicated
- Escitalopram + Phenelzine Contraindicated
- Escitalopram + Pimozide Contraindicated
Frequently asked questions
Can I take Escitalopram with Primaquine?
MediHelp rates the interaction as moderate. Escitalopram 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. Escitalopram causes dose-dependent QT prolongation and primaquine may add to this effect. The risk of arrhythmia is greater at higher escitalopram doses and in patients with cardiac risk factors.
How serious is the interaction between Escitalopram 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, correct potassium and magnesium, and keep the escitalopram dose at the lowest effective level. Repeat the ECG during co-therapy in patients with cardiac risk factors.
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.
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.
