Drug interactions
Amoxapine + Bethanechol
Severity: Moderate
Amoxapine and Bethanechol: 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
Amoxapine has anticholinergic activity that can oppose the muscarinic stimulation of bethanechol. The therapeutic effect on bladder or gastrointestinal function may be reduced, and urinary retention from the antidepressant may persist.
What this interaction means in plain words
Amoxapine and Bethanechol 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.
Why it happens
Pharmacodynamic antagonism at muscarinic receptors by amoxapine's antimuscarinic activity.
What to do
Monitor urinary and bowel function for loss of bethanechol efficacy. Consider an antidepressant with less anticholinergic activity if retention persists.
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
Frequently asked questions
Can I take Amoxapine with Bethanechol?
MediHelp rates the interaction as moderate. Amoxapine and Bethanechol 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. Amoxapine has anticholinergic activity that can oppose the muscarinic stimulation of bethanechol. The therapeutic effect on bladder or gastrointestinal function may be reduced, and urinary retention from the antidepressant may persist.
How serious is the interaction between Amoxapine and Bethanechol?
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 urinary and bowel function for loss of bethanechol efficacy. Consider an antidepressant with less anticholinergic activity if retention persists.
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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