Drug interactions
Galantamine + Huperzine a
Severity: Moderate
Galantamine and Huperzine a: 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
Huperzine A is a cholinesterase inhibitor, so combining it with galantamine duplicates therapy and increases cholinergic adverse effects. These include nausea, vomiting, bradycardia and syncope.
What this interaction means in plain words
Galantamine and Huperzine a 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
Additive acetylcholinesterase inhibition.
What to do
Avoid using huperzine A with galantamine. If it has been taken, monitor heart rate and gastrointestinal symptoms.
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 Huperzine a?
MediHelp rates the interaction as moderate. Galantamine and Huperzine a 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. Huperzine A is a cholinesterase inhibitor, so combining it with galantamine duplicates therapy and increases cholinergic adverse effects. These include nausea, vomiting, bradycardia and syncope.
How serious is the interaction between Galantamine and Huperzine a?
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 using huperzine A with galantamine. If it has been taken, monitor heart rate and gastrointestinal symptoms.
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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