Drug interactions
Trazodone + Trospium
Severity: Minor
Trazodone and Trospium: 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
Trazodone has weak anticholinergic activity, so a clinically important additive effect with trospium is unlikely. Sedation and dizziness may add up in some patients, but this is not a true antimuscarinic interaction.
What this interaction means in plain words
Trazodone and Trospium have a small, usually unimportant interaction. Most people can take both; the pharmacist may still mention it so that any unexpected effect is recognised.
Trazodone belongs to Central Nervous System; Trospium belongs to Genitourinary.
Why it happens
Minimal additive antimuscarinic effect; trazodone mainly acts through serotonergic and alpha-adrenergic mechanisms.
What to do
No dose adjustment is needed. Monitor for dizziness, sedation and anticholinergic symptoms in older patients.
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 Trazodone
- Arsenic trioxide + Trazodone Contraindicated
- Ibutilide + Trazodone Contraindicated
- Isocarboxazid + Trazodone Contraindicated
- Levoketoconazole + Trazodone Contraindicated
- Methylene blue + Trazodone Contraindicated
- Phenelzine + Trazodone Contraindicated
Frequently asked questions
Can I take Trazodone with Trospium?
MediHelp rates the interaction as minor. Trazodone and Trospium have a small, usually unimportant interaction. Most people can take both; the pharmacist may still mention it so that any unexpected effect is recognised. Trazodone has weak anticholinergic activity, so a clinically important additive effect with trospium is unlikely. Sedation and dizziness may add up in some patients, but this is not a true antimuscarinic interaction.
How serious is the interaction between Trazodone and Trospium?
MediHelp rates it minor, on a four-level scale (minor, moderate, major, contraindicated) based on published labels and references. What to do, in brief: No dose adjustment is needed. Monitor for dizziness, sedation and anticholinergic symptoms in older patients.
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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