Drug interactions
Belladonna alkaloids + Galantamine
Severity: Moderate
Belladonna alkaloids 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
Belladonna alkaloids such as atropine and hyoscyamine block muscarinic receptors and counteract galantamine. Efficacy of the dementia treatment may be reduced and anticholinergic burden increases cognitive risk.
What this interaction means in plain words
Belladonna alkaloids 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.
Why it happens
Pharmacodynamic antagonism between cholinesterase inhibition and muscarinic blockade.
What to do
Avoid or minimize anticholinergic agents in patients taking galantamine. If needed, monitor cognition and clinical response.
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
Frequently asked questions
Can I take Belladonna alkaloids with Galantamine?
MediHelp rates the interaction as moderate. Belladonna alkaloids 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. Belladonna alkaloids such as atropine and hyoscyamine block muscarinic receptors and counteract galantamine. Efficacy of the dementia treatment may be reduced and anticholinergic burden increases cognitive risk.
How serious is the interaction between Belladonna alkaloids 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: Avoid or minimize anticholinergic agents in patients taking galantamine. If needed, monitor cognition and clinical response.
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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