Drug interactions
Crofelemer + Pimozide
Severity: Minor
Crofelemer and Pimozide: minor 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
Crofelemer may inhibit CYP3A4 in the gut, but it is minimally absorbed so systemic inhibition is unlikely. A meaningful rise in pimozide levels is therefore uncertain but theoretically relevant given pimozide's narrow therapeutic index and QT risk.
What this interaction means in plain words
Crofelemer and Pimozide have a small, usually unimportant interaction. Most people can take both; the pharmacist may still mention it so that any unexpected effect is recognised.
Crofelemer belongs to Gastrointestinal Tract; Pimozide belongs to Central Nervous System.
Why it happens
Possible intestinal CYP3A4 inhibition by crofelemer, which is minimally absorbed.
What to do
No routine change is needed, but monitor for QT-related symptoms and consider an ECG if palpitations or syncope occur. Maintain normal electrolytes.
What to ask your pharmacist
- Is there anything I should notice while taking both?
- Do I need to tell my doctor at the next visit?
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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 Crofelemer
- Crofelemer + Ergotamine Moderate
- Alfuzosin + Crofelemer Minor
- Amiodarone + Crofelemer Minor
- Apixaban + Crofelemer Minor
- Aprepitant + Crofelemer Minor
- Armodafinil + Crofelemer Minor
Frequently asked questions
Can I take Crofelemer with Pimozide?
MediHelp rates the interaction as minor. Crofelemer and Pimozide have a small, usually unimportant interaction. Most people can take both; the pharmacist may still mention it so that any unexpected effect is recognised. Crofelemer may inhibit CYP3A4 in the gut, but it is minimally absorbed so systemic inhibition is unlikely. A meaningful rise in pimozide levels is therefore uncertain but theoretically relevant given pimozide's narrow therapeutic index and QT risk.
How serious is the interaction between Crofelemer and Pimozide?
MediHelp rates it minor, on a four-level scale (minor, moderate, major, contraindicated) based on published labels and references. What to do, in brief: No routine change is needed, but monitor for QT-related symptoms and consider an ECG if palpitations or syncope occur. Maintain normal electrolytes.
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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