Drug interactions
Galantamine + Orphenadrine
Severity: Moderate
Galantamine and Orphenadrine: 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
Orphenadrine has strong anticholinergic properties that counteract galantamine. This may blunt the benefit of the cholinesterase inhibitor and add to confusion in older patients.
What this interaction means in plain words
Galantamine and Orphenadrine 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 if possible and use a non-anticholinergic muscle relaxant; otherwise monitor cognition and anticholinergic effects.
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 Galantamine with Orphenadrine?
MediHelp rates the interaction as moderate. Galantamine and Orphenadrine 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. Orphenadrine has strong anticholinergic properties that counteract galantamine. This may blunt the benefit of the cholinesterase inhibitor and add to confusion in older patients.
How serious is the interaction between Galantamine and Orphenadrine?
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 if possible and use a non-anticholinergic muscle relaxant; otherwise monitor cognition and anticholinergic effects.
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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