Drug interactions
Granisetron + Octreotide
Severity: Moderate
Granisetron and Octreotide: 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
Octreotide can cause bradycardia and QT prolongation, and granisetron may add to the QT effect. The combination may raise arrhythmia risk in patients with cardiac disease.
What this interaction means in plain words
Granisetron and Octreotide 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.
Granisetron belongs to Gastrointestinal Tract; Octreotide belongs to Endocrine.
Why it happens
Additive QT prolongation, with octreotide also causing bradycardia that favors arrhythmia.
What to do
Monitor the heart rate and ECG in patients with cardiac disease or electrolyte disturbances. Correct potassium and magnesium.
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 Octreotide
Frequently asked questions
Can I take Granisetron with Octreotide?
MediHelp rates the interaction as moderate. Granisetron and Octreotide 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. Octreotide can cause bradycardia and QT prolongation, and granisetron may add to the QT effect. The combination may raise arrhythmia risk in patients with cardiac disease.
How serious is the interaction between Granisetron and Octreotide?
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 heart rate and ECG in patients with cardiac disease or electrolyte disturbances. Correct potassium and magnesium.
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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