Drug interactions
Bethanechol + Tiotropium-olodaterol
Severity: Moderate
Bethanechol and Tiotropium-olodaterol: 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 tiotropium is a muscarinic antagonist, so each can blunt the effect of the other. Bethanechol's effects on the bladder or gut may be reduced, and tiotropium's bronchodilation may be partly opposed, with bronchoconstriction possible from cholinergic stimulation.
What this interaction means in plain words
Bethanechol and Tiotropium-olodaterol 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; Tiotropium-olodaterol belongs to Respiratory.
Why it happens
Pharmacodynamic antagonism at muscarinic receptors between an agonist and an antagonist.
What to do
Monitor respiratory status and the therapeutic response to bethanechol. Review the need for bethanechol in patients with COPD or asthma, and adjust the dose if either drug loses effect.
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 Tiotropium-olodaterol
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 Tiotropium-olodaterol?
MediHelp rates the interaction as moderate. Bethanechol and Tiotropium-olodaterol 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 tiotropium is a muscarinic antagonist, so each can blunt the effect of the other. Bethanechol's effects on the bladder or gut may be reduced, and tiotropium's bronchodilation may be partly opposed, with bronchoconstriction possible from cholinergic stimulation.
How serious is the interaction between Bethanechol and Tiotropium-olodaterol?
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 respiratory status and the therapeutic response to bethanechol. Review the need for bethanechol in patients with COPD or asthma, and adjust the dose if either drug loses effect.
What other medicines interact with Tiotropium-olodaterol?
MediHelp also lists interactions of Tiotropium-olodaterol with, for example, Amisulpride, Arformoterol, Arsenic trioxide. The full list is on the Tiotropium-olodaterol page.
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