Drug interactions
Atropine + Bethanechol
Severity: Moderate
Atropine 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
Atropine is a competitive muscarinic antagonist and directly opposes the muscarinic agonist effects of bethanechol on the bladder, gut and other organs. Bethanechol may therefore lose its efficacy, and atropine can be used to reverse bethanechol toxicity.
What this interaction means in plain words
Atropine 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.
Atropine belongs to Miscellaneous; Bethanechol belongs to Gastrointestinal Tract.
Why it happens
Pharmacodynamic antagonism at muscarinic receptors.
What to do
Avoid routine co-administration because therapeutic effect is lost; if bethanechol overdose or cholinergic toxicity occurs, atropine is the appropriate antidote.
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 Atropine
- Atropine + Eluxadoline Major
- Atropine + Henbane Major
- Atropine + Pramlintide Major
- Abobotulinumtoxina + Atropine Moderate
- Aclidinium + Atropine Moderate
- Amantadine + Atropine Moderate
Frequently asked questions
Can I take Atropine with Bethanechol?
MediHelp rates the interaction as moderate. Atropine 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. Atropine is a competitive muscarinic antagonist and directly opposes the muscarinic agonist effects of bethanechol on the bladder, gut and other organs. Bethanechol may therefore lose its efficacy, and atropine can be used to reverse bethanechol toxicity.
How serious is the interaction between Atropine 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 routine co-administration because therapeutic effect is lost; if bethanechol overdose or cholinergic toxicity occurs, atropine is the appropriate antidote.
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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