Drug interactions
Carbachol + Galantamine
Severity: Moderate
Carbachol and Galantamine: 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
Carbachol is a direct cholinergic agonist, and galantamine inhibits acetylcholine breakdown, so cholinergic effects may be additive. This can cause bradycardia, bronchospasm, salivation, sweating and gastrointestinal cramping.
What this interaction means in plain words
Carbachol and Galantamine 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.
Carbachol belongs to Miscellaneous; Galantamine belongs to Central Nervous System.
Why it happens
Additive cholinergic stimulation from a direct muscarinic agonist and a cholinesterase inhibitor.
What to do
Monitor heart rate, respiratory status and gastrointestinal symptoms, especially with systemic carbachol. Topical ophthalmic use carries less risk but still warrants vigilance in asthma or bradycardia.
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 Galantamine
- Galantamine + Memantine-donepezil Major
- Galantamine + Physostigmine Major
- Galantamine + Ponesimod Major
- Galantamine + Rivastigmine Major
- Amifampridine + Galantamine Moderate
- Amiodarone + Galantamine Moderate
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 Galantamine?
MediHelp rates the interaction as moderate. Carbachol and Galantamine 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. Carbachol is a direct cholinergic agonist, and galantamine inhibits acetylcholine breakdown, so cholinergic effects may be additive. This can cause bradycardia, bronchospasm, salivation, sweating and gastrointestinal cramping.
How serious is the interaction between Carbachol and Galantamine?
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 heart rate, respiratory status and gastrointestinal symptoms, especially with systemic carbachol. Topical ophthalmic use carries less risk but still warrants vigilance in asthma or bradycardia.
What other medicines interact with Galantamine?
MediHelp also lists interactions of Galantamine with, for example, Memantine-donepezil, Physostigmine, Ponesimod. The full list is on the Galantamine page.
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