Drug interactions
Ipratropium + Neostigmine
Severity: Minor
Ipratropium and Neostigmine: 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
Neostigmine boosts acetylcholine activity while ipratropium blocks muscarinic receptors, so the two have opposing pharmacology. With inhaled ipratropium at usual doses, systemic exposure is small and a meaningful clinical effect is unlikely. Antimuscarinic effects of ipratropium may partly blunt the bronchial and cholinergic effects of neostigmine.
What this interaction means in plain words
Ipratropium and Neostigmine 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; Neostigmine belongs to Central Nervous System.
Why it happens
Pharmacodynamic antagonism between a cholinesterase inhibitor and a muscarinic antagonist.
What to do
No routine change is needed; watch for bronchospasm or excess secretions in patients on neostigmine who also use ipratropium, and adjust bronchodilator therapy if needed.
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 Ipratropium
- Aclidinium + Ipratropium Moderate
- Benztropine + Ipratropium Moderate
- Bethanechol + Ipratropium Moderate
- Cevimeline + Ipratropium Moderate
- Chlorpromazine + Ipratropium Moderate
- Clomipramine + Ipratropium Moderate
Other interactions of Neostigmine
Frequently asked questions
Can I take Ipratropium with Neostigmine?
MediHelp rates the interaction as minor. Ipratropium and Neostigmine have a small, usually unimportant interaction. Most people can take both; the pharmacist may still mention it so that any unexpected effect is recognised. Neostigmine boosts acetylcholine activity while ipratropium blocks muscarinic receptors, so the two have opposing pharmacology. With inhaled ipratropium at usual doses, systemic exposure is small and a meaningful clinical effect is unlikely. Antimuscarinic effects of ipratropium may partly blunt the bronchial and cholinergic effects of neostigmine.
How serious is the interaction between Ipratropium and Neostigmine?
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; watch for bronchospasm or excess secretions in patients on neostigmine who also use ipratropium, and adjust bronchodilator therapy if needed.
What other medicines interact with Ipratropium?
MediHelp also lists interactions of Ipratropium with, for example, Aclidinium, Benztropine, Bethanechol. The full list is on the Ipratropium page.
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