Drug interactions
Trospium + Ziprasidone
Severity: Minor
Trospium and Ziprasidone: minor 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 has weak anticholinergic activity that may add modestly to trospium's antimuscarinic effects, causing dry mouth, constipation or urinary retention. The legacy claims of reduced absorption are not supported.
What this interaction means in plain words
Trospium and Ziprasidone have a small, usually unimportant interaction. Most people can take both; the pharmacist may still mention it so that any unexpected effect is recognised.
Trospium belongs to Genitourinary; Ziprasidone belongs to Central Nervous System.
Why it happens
Weak additive antimuscarinic effects.
What to do
Monitor for anticholinergic effects such as constipation and urinary retention. No dose change is usually needed.
What to ask your pharmacist
- Is there anything I should notice while taking both?
- Do I need to tell my doctor at the next visit?
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Other interactions of Trospium
- Clozapine + Trospium Major
- Pramlintide + Trospium Major
- Thioridazine + Trospium Major
- Trihexyphenidyl + Trospium Major
- Aclidinium + Trospium Moderate
- Amantadine + Trospium Moderate
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 Trospium with Ziprasidone?
MediHelp rates the interaction as minor. Trospium and Ziprasidone have a small, usually unimportant interaction. Most people can take both; the pharmacist may still mention it so that any unexpected effect is recognised. Ziprasidone has weak anticholinergic activity that may add modestly to trospium's antimuscarinic effects, causing dry mouth, constipation or urinary retention. The legacy claims of reduced absorption are not supported.
How serious is the interaction between Trospium and Ziprasidone?
MediHelp rates it minor, on a four-level scale (minor, moderate, major, contraindicated) based on published labels and references. What to do, in brief: Monitor for anticholinergic effects such as constipation and urinary retention. No dose change is usually needed.
What other medicines interact with Trospium?
MediHelp also lists interactions of Trospium with, for example, Clozapine, Pramlintide, Thioridazine. The full list is on the Trospium page.
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