Drug interactions
Levodopa inhaled + Ziprasidone
Severity: Major
Levodopa inhaled and Ziprasidone: 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
Ziprasidone blocks central dopamine D2 receptors and can reduce the effect of inhaled levodopa used for off episodes. This may worsen parkinsonian symptoms.
What this interaction means in plain words
Levodopa inhaled and Ziprasidone 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, with D2 receptor blockade opposing the dopaminergic effect of levodopa.
What to do
Avoid ziprasidone in patients using levodopa; if an antipsychotic is needed, use quetiapine, clozapine or pimavanserin. Monitor motor control.
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 Ziprasidone
- Amiodarone + Ziprasidone Contraindicated
- Amitriptyline + Ziprasidone Contraindicated
- Arsenic trioxide + Ziprasidone Contraindicated
- Bedaquiline + Ziprasidone Contraindicated
- Chloroquine + Ziprasidone Contraindicated
- Citalopram + Ziprasidone Contraindicated
Frequently asked questions
Can I take Levodopa inhaled with Ziprasidone?
MediHelp rates the interaction as major. Levodopa inhaled and Ziprasidone 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. Ziprasidone blocks central dopamine D2 receptors and can reduce the effect of inhaled levodopa used for off episodes. This may worsen parkinsonian symptoms.
How serious is the interaction between Levodopa inhaled and Ziprasidone?
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 ziprasidone in patients using levodopa; if an antipsychotic is needed, use quetiapine, clozapine or pimavanserin. Monitor motor control.
What other medicines interact with Ziprasidone?
MediHelp also lists interactions of Ziprasidone with, for example, Amiodarone, Amitriptyline, Arsenic trioxide. The full list is on the Ziprasidone page.
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