Drug interactions
Bethanechol + Solifenacin
Severity: Moderate
Bethanechol and Solifenacin: 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
Solifenacin blocks muscarinic receptors in the bladder, while bethanechol stimulates them. The two drugs work against each other, so urinary retention treatment or overactive bladder control may fail.
What this interaction means in plain words
Bethanechol and Solifenacin 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; Solifenacin belongs to Genitourinary.
Why it happens
Pharmacodynamic antagonism at muscarinic receptors.
What to do
Avoid concurrent use where possible; if unavoidable, monitor urinary symptoms and post-void residual and reassess the indication for each drug.
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 Solifenacin
Frequently asked questions
Can I take Bethanechol with Solifenacin?
MediHelp rates the interaction as moderate. Bethanechol and Solifenacin 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. Solifenacin blocks muscarinic receptors in the bladder, while bethanechol stimulates them. The two drugs work against each other, so urinary retention treatment or overactive bladder control may fail.
How serious is the interaction between Bethanechol and Solifenacin?
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 concurrent use where possible; if unavoidable, monitor urinary symptoms and post-void residual and reassess the indication for each drug.
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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