Drug interactions
Pimozide + Ropinirole
Severity: Major
Pimozide and Ropinirole: 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
Pimozide blocks dopamine receptors and counteracts the dopaminergic effect of ropinirole. This can cause loss of symptom control in Parkinson disease or restless legs syndrome and increases extrapyramidal effects.
What this interaction means in plain words
Pimozide and Ropinirole 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.
Pimozide belongs to Central Nervous System; Ropinirole belongs to Central Nervous System.
Why it happens
Pharmacodynamic antagonism at dopamine D2-type receptors.
What to do
Avoid the combination. Use a low-D2-affinity antipsychotic such as quetiapine if an antipsychotic is needed.
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?
Pro+ members
Unlock the full page
Create an account and start a Pro+ trial to unlock the full management advice for Pimozide and Ropinirole, the additional notes, the evidence detail and the whole-prescription interaction checker.
- Full clinical management advice
- Additional notes
- Evidence detail
- Interaction checker for a whole prescription
Try Pro+ free for 7 days on the web. No card needed.
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 Ropinirole
- Amisulpride + Ropinirole Contraindicated
- Chlorpromazine + Ropinirole Major
- Droperidol + Ropinirole Major
- Fluphenazine + Ropinirole Major
- Fluvoxamine + Ropinirole Major
- Haloperidol + Ropinirole Major
Frequently asked questions
Can I take Pimozide with Ropinirole?
MediHelp rates the interaction as major. Pimozide and Ropinirole 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. Pimozide blocks dopamine receptors and counteracts the dopaminergic effect of ropinirole. This can cause loss of symptom control in Parkinson disease or restless legs syndrome and increases extrapyramidal effects.
How serious is the interaction between Pimozide and Ropinirole?
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. Use a low-D2-affinity antipsychotic such as quetiapine if an antipsychotic is needed.
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.
Full monographs, dosing and an interaction checker in the MediHelp app
Open the complete reference, check multi-drug interactions and use dosing tools in the MediHelp app.
