Drug interactions
Homatropine + Ziprasidone
Severity: Minor
Homatropine 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
Homatropine is an antimuscarinic and may add to the mild anticholinergic activity of ziprasidone. Dry mouth, constipation, urinary retention, blurred vision and confusion may be more pronounced.
What this interaction means in plain words
Homatropine 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.
Homatropine belongs to Genitourinary; Ziprasidone belongs to Central Nervous System.
Why it happens
Additive antimuscarinic pharmacodynamic effects.
What to do
Monitor for anticholinergic effects, especially in elderly patients or those with urinary retention or narrow-angle glaucoma. Lower the dose or stop one agent if symptoms develop.
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 Ziprasidone
- Amiodarone + Ziprasidone Contraindicated
- Amitriptyline + Ziprasidone Contraindicated
- Arsenic trioxide + Ziprasidone Contraindicated
- Bedaquiline + Ziprasidone Contraindicated
- Chloroquine + Ziprasidone Contraindicated
- Citalopram + Ziprasidone Contraindicated
Other interactions of Homatropine
- Amantadine + Homatropine Moderate
- Amitriptyline + Homatropine Moderate
- Atropine + Homatropine Moderate
- Benztropine + Homatropine Moderate
- Bethanechol + Homatropine Moderate
- Chlorpromazine + Homatropine Moderate
Frequently asked questions
Can I take Homatropine with Ziprasidone?
MediHelp rates the interaction as minor. Homatropine 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. Homatropine is an antimuscarinic and may add to the mild anticholinergic activity of ziprasidone. Dry mouth, constipation, urinary retention, blurred vision and confusion may be more pronounced.
How serious is the interaction between Homatropine 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, especially in elderly patients or those with urinary retention or narrow-angle glaucoma. Lower the dose or stop one agent if symptoms develop.
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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