Drug interactions
Carbachol + Meclizine
Severity: Minor
Carbachol and Meclizine: minor 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
Carbachol is a cholinergic agonist and meclizine has weak antimuscarinic activity, so meclizine may partly oppose carbachol effects. Clinically important interference is unlikely, especially with topical ophthalmic carbachol.
What this interaction means in plain words
Carbachol and Meclizine have a small, usually unimportant interaction. Most people can take both; the pharmacist may still mention it so that any unexpected effect is recognised.
Carbachol belongs to Miscellaneous; Meclizine belongs to Respiratory.
Why it happens
Pharmacodynamic antagonism at muscarinic receptors.
What to do
No routine action is needed. Monitor for reduced carbachol effect if systemic use occurs.
What to ask your pharmacist
- Is there anything I should notice while taking both?
- Do I need to tell my doctor at the next visit?
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Other interactions of Meclizine
Other interactions of Carbachol
- Atropine + Carbachol Moderate
- Bethanechol + Carbachol Moderate
- Carbachol + Darifenacin Moderate
- Carbachol + Dicyclomine Moderate
- Carbachol + Donepezil Moderate
- Carbachol + Flavoxate Moderate
Frequently asked questions
Can I take Carbachol with Meclizine?
MediHelp rates the interaction as minor. Carbachol and Meclizine have a small, usually unimportant interaction. Most people can take both; the pharmacist may still mention it so that any unexpected effect is recognised. Carbachol is a cholinergic agonist and meclizine has weak antimuscarinic activity, so meclizine may partly oppose carbachol effects. Clinically important interference is unlikely, especially with topical ophthalmic carbachol.
How serious is the interaction between Carbachol and Meclizine?
MediHelp rates it minor, on a four-level scale (minor, moderate, major, contraindicated) based on published labels and references. What to do, in brief: No routine action is needed. Monitor for reduced carbachol effect if systemic use occurs.
What other medicines interact with Meclizine?
MediHelp also lists interactions of Meclizine with, for example, Belladonna and opium, Benzhydrocodone / acetaminophen, Brexanolone. The full list is on the Meclizine page.
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