Drug interactions
Ropinirole + Thiothixene
Severity: Major
Ropinirole and Thiothixene: 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
Thiothixene is a high-potency typical antipsychotic that blocks dopamine D2 receptors and opposes ropinirole. This can worsen parkinsonism and reduce ropinirole's benefit, and also increase extrapyramidal effects.
What this interaction means in plain words
Ropinirole and Thiothixene 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
Pharmacodynamic antagonism at dopamine D2 receptors.
What to do
Avoid the combination; prefer quetiapine or clozapine when an antipsychotic is needed in Parkinson disease. Monitor motor function if unavoidable.
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 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 Ropinirole with Thiothixene?
MediHelp rates the interaction as major. Ropinirole and Thiothixene 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. Thiothixene is a high-potency typical antipsychotic that blocks dopamine D2 receptors and opposes ropinirole. This can worsen parkinsonism and reduce ropinirole's benefit, and also increase extrapyramidal effects.
How serious is the interaction between Ropinirole and Thiothixene?
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; prefer quetiapine or clozapine when an antipsychotic is needed in Parkinson disease. Monitor motor function if unavoidable.
What other medicines interact with Ropinirole?
MediHelp also lists interactions of Ropinirole with, for example, Amisulpride, Chlorpromazine, Droperidol. The full list is on the Ropinirole page.
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