Drug interactions
Escitalopram + Granisetron
Severity: Moderate
Escitalopram and Granisetron: 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 prolongs the QT interval in a dose-related way and granisetron can add a small QT effect. Serotonin syndrome has also been reported when 5-HT3 antagonists are combined with SSRIs. Both concerns are generally of low absolute frequency.
What this interaction means in plain words
Escitalopram and Granisetron 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; Granisetron belongs to Gastrointestinal Tract.
Why it happens
Additive QT prolongation and possible additive serotonergic effect.
What to do
Monitor the ECG in patients with cardiac disease or electrolyte abnormalities, and keep the escitalopram dose at the lowest effective level. Watch for serotonin toxicity and stop the agents if it occurs.
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 Granisetron
- Apomorphine + Granisetron Contraindicated
- Amiodarone + Granisetron Major
- Amisulpride + Granisetron Major
- Arsenic trioxide + Granisetron Major
- Artemether / lumefantrine + Granisetron Major
- Artemether + Granisetron 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 Granisetron?
MediHelp rates the interaction as moderate. Escitalopram and Granisetron 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 prolongs the QT interval in a dose-related way and granisetron can add a small QT effect. Serotonin syndrome has also been reported when 5-HT3 antagonists are combined with SSRIs. Both concerns are generally of low absolute frequency.
How serious is the interaction between Escitalopram and Granisetron?
MediHelp rates it moderate, on a four-level scale (minor, moderate, major, contraindicated) based on published labels and references. What to do, in brief: Monitor the ECG in patients with cardiac disease or electrolyte abnormalities, and keep the escitalopram dose at the lowest effective level. Watch for serotonin toxicity and stop the agents if it occurs.
What other medicines interact with Granisetron?
MediHelp also lists interactions of Granisetron with, for example, Apomorphine, Amiodarone, Amisulpride. The full list is on the Granisetron page.
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