Drug interactions
Galantamine + Orphenadrin
Severity: Moderate
Galantamine and Orphenadrin: 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's antimuscarinic action opposes the cholinergic effect of galantamine, which may reduce its cognitive benefit. Orphenadrine can also worsen confusion in patients with dementia.
What this interaction means in plain words
Galantamine and Orphenadrin 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.
Galantamine belongs to Central Nervous System; Orphenadrin belongs to Musculoskeletal.
Why it happens
Pharmacodynamic antagonism between an antimuscarinic and a cholinesterase inhibitor.
What to do
Avoid orphenadrine in dementia patients on galantamine where an alternative exists. If continued, monitor cognition and function.
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 Orphenadrin
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 Orphenadrin?
MediHelp rates the interaction as moderate. Galantamine and Orphenadrin 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's antimuscarinic action opposes the cholinergic effect of galantamine, which may reduce its cognitive benefit. Orphenadrine can also worsen confusion in patients with dementia.
How serious is the interaction between Galantamine and Orphenadrin?
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 orphenadrine in dementia patients on galantamine where an alternative exists. If continued, monitor cognition and function.
What other medicines interact with Orphenadrin?
MediHelp also lists interactions of Orphenadrin with, for example, Alfentanil, Amobarbital, Benzhydrocodone / acetaminophen. The full list is on the Orphenadrin page.
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