Drug interactions
Belladonna alkaloids + Bethanechol
Severity: Moderate
Belladonna alkaloids 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
Belladonna alkaloids such as atropine and hyoscyamine block muscarinic receptors and oppose bethanechol. The expected increase in bladder or gut motility may be reduced or abolished.
What this interaction means in plain words
Belladonna alkaloids 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
Competitive muscarinic antagonism opposes the muscarinic agonism of bethanechol.
What to do
Avoid combining when bethanechol is used for retention or hypomotility. If both are needed, monitor clinical response and adjust doses.
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 Belladonna alkaloids with Bethanechol?
MediHelp rates the interaction as moderate. Belladonna alkaloids 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. Belladonna alkaloids such as atropine and hyoscyamine block muscarinic receptors and oppose bethanechol. The expected increase in bladder or gut motility may be reduced or abolished.
How serious is the interaction between Belladonna alkaloids 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: Avoid combining when bethanechol is used for retention or hypomotility. If both are needed, monitor clinical response and adjust doses.
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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