Drug interactions
Propantheline + Umeclidinium
Severity: Moderate
Propantheline and Umeclidinium: 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 drugs block muscarinic receptors, so combining them can add to anticholinergic effects such as dry mouth, constipation, urinary retention, blurred vision and tachycardia. Inhaled umeclidinium has low systemic exposure, so the effect is usually modest, but it can matter in older patients or those with glaucoma or prostatic hyperplasia.
What this interaction means in plain words
Propantheline and Umeclidinium 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 pharmacodynamic antagonism of muscarinic acetylcholine receptors.
What to do
Monitor for anticholinergic adverse effects such as urinary retention, constipation and dry mouth. Reduce or stop propantheline if symptoms appear, especially in elderly patients or those with narrow-angle glaucoma.
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 Umeclidinium
- Tiotropium + Umeclidinium Major
- Aclidinium + Umeclidinium Moderate
- Atropine iv / + Umeclidinium Moderate
- Atropine + Umeclidinium Moderate
- Belladonna alkaloids + Umeclidinium Moderate
- Bethanechol + Umeclidinium Moderate
Frequently asked questions
Can I take Propantheline with Umeclidinium?
MediHelp rates the interaction as moderate. Propantheline and Umeclidinium 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 drugs block muscarinic receptors, so combining them can add to anticholinergic effects such as dry mouth, constipation, urinary retention, blurred vision and tachycardia. Inhaled umeclidinium has low systemic exposure, so the effect is usually modest, but it can matter in older patients or those with glaucoma or prostatic hyperplasia.
How serious is the interaction between Propantheline and Umeclidinium?
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 adverse effects such as urinary retention, constipation and dry mouth. Reduce or stop propantheline if symptoms appear, especially in elderly patients or those with narrow-angle glaucoma.
What other medicines interact with Umeclidinium?
MediHelp also lists interactions of Umeclidinium with, for example, Tiotropium, Aclidinium, Atropine iv /. The full list is on the Umeclidinium page.
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