Drug interactions
Octreotide + Pimozide
Severity: Major
Octreotide and Pimozide: major 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, which adds to the substantial QT liability of pimozide. This raises the risk of torsades de pointes, particularly with bradycardia or electrolyte disturbance.
What this interaction means in plain words
Octreotide and Pimozide can interact in a way that may be serious. Using them together is sometimes necessary, but it needs a deliberate decision by the prescriber, a plan for monitoring, and clear advice on the warning signs to watch for.
Octreotide belongs to Endocrine; Pimozide belongs to Central Nervous System.
Why it happens
Additive pharmacodynamic QT prolongation, with octreotide-related bradycardia further promoting arrhythmia.
What to do
Avoid the combination where possible. If both are needed, obtain a baseline and follow-up ECG and correct potassium and magnesium.
What to ask your pharmacist
- Does the benefit of taking both outweigh the risk in my case?
- Do I need any blood test, ECG or other check while on both?
- What early warning signs should I watch for, and what should I do if they appear?
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Other interactions of Pimozide
- Adagrasib + Pimozide Contraindicated
- Amiodarone + Pimozide Contraindicated
- Amisulpride + Pimozide Contraindicated
- Amitriptyline + Pimozide Contraindicated
- Amoxapine + Pimozide Contraindicated
- Anagrelide + Pimozide Contraindicated
Other interactions of Octreotide
Frequently asked questions
Can I take Octreotide with Pimozide?
MediHelp rates the interaction as major. Octreotide and Pimozide can interact in a way that may be serious. Using them together is sometimes necessary, but it needs a deliberate decision by the prescriber, a plan for monitoring, and clear advice on the warning signs to watch for. Octreotide can cause bradycardia and QT prolongation, which adds to the substantial QT liability of pimozide. This raises the risk of torsades de pointes, particularly with bradycardia or electrolyte disturbance.
How serious is the interaction between Octreotide and Pimozide?
MediHelp rates it major, on a four-level scale (minor, moderate, major, contraindicated) based on published labels and references. What to do, in brief: Avoid the combination where possible. If both are needed, obtain a baseline and follow-up ECG and correct potassium and magnesium.
What other medicines interact with Pimozide?
MediHelp also lists interactions of Pimozide with, for example, Adagrasib, Amiodarone, Amisulpride. The full list is on the Pimozide page.
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