Drug interactions
Imipramine + Trospium
Severity: Moderate
Imipramine and Trospium: 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
Imipramine has substantial anticholinergic activity, and with trospium the antimuscarinic burden increases. Dry mouth, constipation, urinary retention, tachycardia and confusion may result.
What this interaction means in plain words
Imipramine and Trospium 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.
Imipramine belongs to Central Nervous System; Trospium belongs to Genitourinary.
Why it happens
Additive antimuscarinic effects.
What to do
Monitor for anticholinergic symptoms and heart rate, especially in older patients. Reduce doses or choose a less anticholinergic option if symptoms occur.
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 Trospium
- Clozapine + Trospium Major
- Pramlintide + Trospium Major
- Thioridazine + Trospium Major
- Trihexyphenidyl + Trospium Major
- Aclidinium + Trospium Moderate
- Amantadine + Trospium Moderate
Other interactions of Imipramine
- Dronedarone + Imipramine Contraindicated
- Imipramine + Isocarboxazid Contraindicated
- Imipramine + Phenelzine Contraindicated
- Imipramine + Pimozide Contraindicated
- Imipramine + Rasagiline Contraindicated
- Imipramine + Safinamide Contraindicated
Frequently asked questions
Can I take Imipramine with Trospium?
MediHelp rates the interaction as moderate. Imipramine and Trospium 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. Imipramine has substantial anticholinergic activity, and with trospium the antimuscarinic burden increases. Dry mouth, constipation, urinary retention, tachycardia and confusion may result.
How serious is the interaction between Imipramine and Trospium?
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 for anticholinergic symptoms and heart rate, especially in older patients. Reduce doses or choose a less anticholinergic option if symptoms occur.
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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