Drug interactions
DHEA herbal + Pimozide
Severity: Major
DHEA herbal 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
DHEA may inhibit drug metabolism and has been suggested to raise pimozide exposure, though data are limited. Higher pimozide levels could lead to QT prolongation and arrhythmia.
What this interaction means in plain words
DHEA herbal 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.
Why it happens
Possible inhibition of CYP3A4-mediated pimozide metabolism; the mechanism is not firmly established.
What to do
Advise patients to avoid DHEA supplements while taking pimozide. Check ECG if the supplement has been used.
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
Frequently asked questions
Can I take DHEA herbal with Pimozide?
MediHelp rates the interaction as major. DHEA herbal 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. DHEA may inhibit drug metabolism and has been suggested to raise pimozide exposure, though data are limited. Higher pimozide levels could lead to QT prolongation and arrhythmia.
How serious is the interaction between DHEA herbal 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: Advise patients to avoid DHEA supplements while taking pimozide. Check ECG if the supplement has been used.
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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