Drug interactions
Galantamine + Pyridostigmine
Severity: Moderate
Galantamine and Pyridostigmine: 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
Both agents inhibit cholinesterase, so together they can cause additive cholinergic effects including bradycardia, abdominal cramps, diarrhea, increased bronchial secretions and, at excess, cholinergic crisis with muscle weakness. This is relevant in myasthenia gravis, where weakness from overdose may mimic disease worsening.
What this interaction means in plain words
Galantamine and Pyridostigmine 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; Pyridostigmine belongs to Central Nervous System.
Why it happens
Additive pharmacodynamic inhibition of acetylcholinesterase.
What to do
Avoid combining unless clearly needed; monitor heart rate, GI symptoms and muscle strength, and adjust the pyridostigmine dose if cholinergic signs appear.
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 Pyridostigmine
Frequently asked questions
Can I take Galantamine with Pyridostigmine?
MediHelp rates the interaction as moderate. Galantamine and Pyridostigmine 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. Both agents inhibit cholinesterase, so together they can cause additive cholinergic effects including bradycardia, abdominal cramps, diarrhea, increased bronchial secretions and, at excess, cholinergic crisis with muscle weakness. This is relevant in myasthenia gravis, where weakness from overdose may mimic disease worsening.
How serious is the interaction between Galantamine and Pyridostigmine?
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 combining unless clearly needed; monitor heart rate, GI symptoms and muscle strength, and adjust the pyridostigmine dose if cholinergic signs appear.
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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