Drug interactions
Olanzapine / samidorphan + Pramipexole
Severity: Moderate
Olanzapine / samidorphan and Pramipexole: moderate 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
Olanzapine blocks dopamine D2 receptors and so opposes the effect of pramipexole. This may worsen Parkinson symptoms or reduce the efficacy of either drug.
What this interaction means in plain words
Olanzapine / samidorphan and Pramipexole can affect each other. The combination is often manageable, but it may need a change of dose, a change of timing, or extra checks while both are taken.
Why it happens
Pharmacodynamic antagonism between a dopamine agonist and a dopamine antagonist.
What to do
Monitor motor symptoms and psychiatric status. In Parkinson disease, prefer an antipsychotic with less D2 blockade such as quetiapine or clozapine.
What to ask your pharmacist
- Should I take them at different times of day?
- Does the dose of either medicine need to change?
- Is there anything I should avoid, such as alcohol or certain foods, while on both?
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Other interactions of Pramipexole
- Amisulpride + Pramipexole Contraindicated
- Chlorpromazine + Pramipexole Major
- Droperidol + Pramipexole Major
- Fluphenazine + Pramipexole Major
- Haloperidol + Pramipexole Major
- Iloperidone + Pramipexole Major
Frequently asked questions
Can I take Olanzapine / samidorphan with Pramipexole?
MediHelp rates the interaction as moderate. Olanzapine / samidorphan and Pramipexole can affect each other. The combination is often manageable, but it may need a change of dose, a change of timing, or extra checks while both are taken. Olanzapine blocks dopamine D2 receptors and so opposes the effect of pramipexole. This may worsen Parkinson symptoms or reduce the efficacy of either drug.
How serious is the interaction between Olanzapine / samidorphan and Pramipexole?
MediHelp rates it moderate, on a four-level scale (minor, moderate, major, contraindicated) based on published labels and references. What to do, in brief: Monitor motor symptoms and psychiatric status. In Parkinson disease, prefer an antipsychotic with less D2 blockade such as quetiapine or clozapine.
What other medicines interact with Pramipexole?
MediHelp also lists interactions of Pramipexole with, for example, Amisulpride, Chlorpromazine, Droperidol. The full list is on the Pramipexole page.
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