Drug interactions
Ipratropium + Memantine-donepezil
Severity: Minor
Ipratropium and Memantine-donepezil: minor 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
Ipratropium is an antimuscarinic and in theory opposes the effects of donepezil. Inhaled ipratropium has low systemic absorption, so clinically relevant antagonism is uncommon.
What this interaction means in plain words
Ipratropium and Memantine-donepezil have a small, usually unimportant interaction. Most people can take both; the pharmacist may still mention it so that any unexpected effect is recognised.
Ipratropium belongs to Respiratory; Memantine-donepezil belongs to Central Nervous System.
Why it happens
Theoretical pharmacodynamic antagonism between a muscarinic antagonist and a cholinesterase inhibitor.
What to do
No routine change is needed; monitor for reduced bronchodilator effect or worsening cognition. Cholinesterase inhibitors can cause bronchoconstriction, so assess respiratory symptoms in patients with asthma or COPD.
What to ask your pharmacist
- Is there anything I should notice while taking both?
- Do I need to tell my doctor at the next visit?
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Other interactions of Memantine-donepezil
- Dronedarone + Memantine-donepezil Contraindicated
- Memantine-donepezil + Thioridazine Contraindicated
- Amantadine + Memantine-donepezil Major
- Amiodarone + Memantine-donepezil Major
- Amisulpride + Memantine-donepezil Major
- Amitriptyline + Memantine-donepezil Major
Other interactions of Ipratropium
- Aclidinium + Ipratropium Moderate
- Benztropine + Ipratropium Moderate
- Bethanechol + Ipratropium Moderate
- Cevimeline + Ipratropium Moderate
- Chlorpromazine + Ipratropium Moderate
- Clomipramine + Ipratropium Moderate
Frequently asked questions
Can I take Ipratropium with Memantine-donepezil?
MediHelp rates the interaction as minor. Ipratropium and Memantine-donepezil have a small, usually unimportant interaction. Most people can take both; the pharmacist may still mention it so that any unexpected effect is recognised. Ipratropium is an antimuscarinic and in theory opposes the effects of donepezil. Inhaled ipratropium has low systemic absorption, so clinically relevant antagonism is uncommon.
How serious is the interaction between Ipratropium and Memantine-donepezil?
MediHelp rates it minor, on a four-level scale (minor, moderate, major, contraindicated) based on published labels and references. What to do, in brief: No routine change is needed; monitor for reduced bronchodilator effect or worsening cognition. Cholinesterase inhibitors can cause bronchoconstriction, so assess respiratory symptoms in patients with asthma or COPD.
What other medicines interact with Memantine-donepezil?
MediHelp also lists interactions of Memantine-donepezil with, for example, Dronedarone, Thioridazine, Amantadine. The full list is on the Memantine-donepezil page.
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