Drug interactions
Escitalopram + Olanzapine
Severity: Moderate
Escitalopram and Olanzapine: 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 can prolong the QT interval and olanzapine has a small, uncommon effect on QTc. Combined use may add modestly to arrhythmia risk, mainly in patients with cardiac disease, electrolyte disturbances or other QT-prolonging drugs.
What this interaction means in plain words
Escitalopram and Olanzapine 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; Olanzapine belongs to Central Nervous System.
Why it happens
Additive pharmacodynamic effects on cardiac repolarization.
What to do
Check an ECG at baseline in patients with cardiac risk factors and monitor QTc after changes in dose. Correct potassium and magnesium abnormalities and avoid adding further 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 Escitalopram
- Cisapride + Escitalopram Contraindicated
- Citalopram + Escitalopram Contraindicated
- Escitalopram + Isocarboxazid Contraindicated
- Escitalopram + Methylene blue Contraindicated
- Escitalopram + Phenelzine Contraindicated
- Escitalopram + Pimozide Contraindicated
Other interactions of Olanzapine
Frequently asked questions
Can I take Escitalopram with Olanzapine?
MediHelp rates the interaction as moderate. Escitalopram and Olanzapine 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 can prolong the QT interval and olanzapine has a small, uncommon effect on QTc. Combined use may add modestly to arrhythmia risk, mainly in patients with cardiac disease, electrolyte disturbances or other QT-prolonging drugs.
How serious is the interaction between Escitalopram and Olanzapine?
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 an ECG at baseline in patients with cardiac risk factors and monitor QTc after changes in dose. Correct potassium and magnesium abnormalities and avoid adding further QT-prolonging drugs.
What other medicines interact with Escitalopram?
MediHelp also lists interactions of Escitalopram with, for example, Cisapride, Citalopram, Isocarboxazid. The full list is on the Escitalopram page.
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