Drug interactions
Olanzapine + Safinamide
Severity: Major
Olanzapine and Safinamide: 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
Olanzapine blocks dopamine D2 receptors and can reduce the benefit of safinamide in Parkinson disease, worsening motor symptoms.
What this interaction means in plain words
Olanzapine and Safinamide 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.
Olanzapine belongs to Central Nervous System; Safinamide belongs to Central Nervous System.
Why it happens
Pharmacodynamic antagonism: D2 receptor blockade opposes the dopaminergic effect of safinamide.
What to do
Avoid olanzapine in Parkinson disease; use quetiapine or clozapine if an antipsychotic is needed. Monitor motor function if combined.
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 Olanzapine
Other interactions of Safinamide
- Amitriptyline + Safinamide Contraindicated
- Amoxapine + Safinamide Contraindicated
- Amphetamine polistirex + Safinamide Contraindicated
- Clomipramine + Safinamide Contraindicated
- Cyclobenzaprine + Safinamide Contraindicated
- Desipramine + Safinamide Contraindicated
Frequently asked questions
Can I take Olanzapine with Safinamide?
MediHelp rates the interaction as major. Olanzapine and Safinamide 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. Olanzapine blocks dopamine D2 receptors and can reduce the benefit of safinamide in Parkinson disease, worsening motor symptoms.
How serious is the interaction between Olanzapine and Safinamide?
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 olanzapine in Parkinson disease; use quetiapine or clozapine if an antipsychotic is needed. Monitor motor function if combined.
What other medicines interact with Olanzapine?
MediHelp also lists interactions of Olanzapine with, for example, Amisulpride, Amoxapine, Apomorphine. The full list is on the Olanzapine page.
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