Drug interactions
Bethanechol + Trimipramine
Severity: Moderate
Bethanechol and Trimipramine: 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
Trimipramine has substantial anticholinergic activity that opposes the muscarinic stimulation produced by bethanechol. This can reduce the effect of bethanechol on bladder or gastrointestinal function.
What this interaction means in plain words
Bethanechol and Trimipramine 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.
Bethanechol belongs to Gastrointestinal Tract; Trimipramine belongs to Central Nervous System.
Why it happens
Pharmacodynamic antagonism through muscarinic receptor blockade by the tricyclic antidepressant.
What to do
Monitor for loss of bethanechol efficacy such as urinary retention; consider a less anticholinergic antidepressant if the response is inadequate.
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 Bethanechol
- Bethanechol + Darifenacin Major
- Bethanechol + Fesoterodine Major
- Bethanechol + Oxybutynin Major
- Bethanechol + Physostigmine Major
- Amifampridine + Bethanechol Moderate
- Amitriptyline + Bethanechol Moderate
Other interactions of Trimipramine
- Disopyramide + Trimipramine Contraindicated
- Dofetilide + Trimipramine Contraindicated
- Ibutilide + Trimipramine Contraindicated
- Isocarboxazid + Trimipramine Contraindicated
- Pentamidine + Trimipramine Contraindicated
- Phenelzine + Trimipramine Contraindicated
Frequently asked questions
Can I take Bethanechol with Trimipramine?
MediHelp rates the interaction as moderate. Bethanechol and Trimipramine 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. Trimipramine has substantial anticholinergic activity that opposes the muscarinic stimulation produced by bethanechol. This can reduce the effect of bethanechol on bladder or gastrointestinal function.
How serious is the interaction between Bethanechol and Trimipramine?
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 loss of bethanechol efficacy such as urinary retention; consider a less anticholinergic antidepressant if the response is inadequate.
What other medicines interact with Bethanechol?
MediHelp also lists interactions of Bethanechol with, for example, Darifenacin, Fesoterodine, Oxybutynin. The full list is on the Bethanechol page.
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