Drug interactions
Bethanechol + Protriptyline
Severity: Moderate
Bethanechol and Protriptyline: 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
Protriptyline is a tricyclic antidepressant with notable anticholinergic activity. It can oppose bethanechol and may worsen urinary retention or constipation.
What this interaction means in plain words
Bethanechol and Protriptyline 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
Antimuscarinic activity of protriptyline opposes bethanechol agonism.
What to do
Monitor for reduced bethanechol response. Consider a less anticholinergic antidepressant 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 Bethanechol with Protriptyline?
MediHelp rates the interaction as moderate. Bethanechol and Protriptyline 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. Protriptyline is a tricyclic antidepressant with notable anticholinergic activity. It can oppose bethanechol and may worsen urinary retention or constipation.
How serious is the interaction between Bethanechol and Protriptyline?
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 reduced bethanechol response. Consider a less anticholinergic antidepressant 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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