Drug interactions
Benztropine + Ipratropium
Severity: Moderate
Benztropine and Ipratropium: 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
Benztropine is a potent systemic anticholinergic, and adding ipratropium can increase anticholinergic burden, causing dry mouth, constipation, urinary retention, blurred vision and confusion. Elderly patients and those with glaucoma or prostatic hyperplasia are most at risk.
What this interaction means in plain words
Benztropine and Ipratropium 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.
Benztropine belongs to Central Nervous System; Ipratropium belongs to Respiratory.
Why it happens
Additive antagonism of muscarinic receptors.
What to do
Monitor for anticholinergic toxicity, especially in older adults, and reduce the benztropine dose if possible. Question new urinary retention, constipation or confusion promptly.
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 Ipratropium
- Aclidinium + Ipratropium Moderate
- Bethanechol + Ipratropium Moderate
- Cevimeline + Ipratropium Moderate
- Chlorpromazine + Ipratropium Moderate
- Clomipramine + Ipratropium Moderate
- Clozapine + Ipratropium Moderate
Other interactions of Benztropine
- Benztropine + Memantine-donepezil Major
- Abobotulinumtoxina + Benztropine Moderate
- Amantadine + Benztropine Moderate
- Amitriptyline + Benztropine Moderate
- Amoxapine + Benztropine Moderate
- Atropine iv / + Benztropine Moderate
Frequently asked questions
Can I take Benztropine with Ipratropium?
MediHelp rates the interaction as moderate. Benztropine and Ipratropium 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. Benztropine is a potent systemic anticholinergic, and adding ipratropium can increase anticholinergic burden, causing dry mouth, constipation, urinary retention, blurred vision and confusion. Elderly patients and those with glaucoma or prostatic hyperplasia are most at risk.
How serious is the interaction between Benztropine and Ipratropium?
MediHelp rates it moderate, on a four-level scale (minor, moderate, major, contraindicated) based on published labels and references. What to do, in brief: Monitor for anticholinergic toxicity, especially in older adults, and reduce the benztropine dose if possible. Question new urinary retention, constipation or confusion promptly.
What other medicines interact with Ipratropium?
MediHelp also lists interactions of Ipratropium with, for example, Aclidinium, Bethanechol, Cevimeline. The full list is on the Ipratropium page.
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