Drug interactions
Bethanechol + Orphenadrin
Severity: Moderate
Bethanechol and Orphenadrin: 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
Bethanechol is a muscarinic agonist and orphenadrine has antimuscarinic activity, so they have opposing effects. The anticholinergic action can reduce bethanechol's effect on bladder or gut stimulation.
What this interaction means in plain words
Bethanechol and Orphenadrin 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; Orphenadrin belongs to Musculoskeletal.
Why it happens
Pharmacodynamic antagonism at muscarinic receptors.
What to do
Monitor for reduced therapeutic effect of bethanechol, such as persistent urinary retention. Consider an alternative muscle relaxant without anticholinergic activity.
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 Orphenadrin
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 Orphenadrin?
MediHelp rates the interaction as moderate. Bethanechol and Orphenadrin 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 is a muscarinic agonist and orphenadrine has antimuscarinic activity, so they have opposing effects. The anticholinergic action can reduce bethanechol's effect on bladder or gut stimulation.
How serious is the interaction between Bethanechol and Orphenadrin?
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 therapeutic effect of bethanechol, such as persistent urinary retention. Consider an alternative muscle relaxant without anticholinergic activity.
What other medicines interact with Orphenadrin?
MediHelp also lists interactions of Orphenadrin with, for example, Alfentanil, Amobarbital, Benzhydrocodone / acetaminophen. The full list is on the Orphenadrin page.
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