Drug interactions
Diphenoxylate-atropine + Umeclidinium bromide / vilanterol inhaled
Severity: Moderate
Diphenoxylate-atropine and Umeclidinium bromide / vilanterol inhaled: 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
Umeclidinium is an inhaled antimuscarinic, and atropine adds systemic anticholinergic effects. Together they may increase dry mouth, urinary retention, constipation and, in susceptible patients, worsen narrow-angle glaucoma.
What this interaction means in plain words
Diphenoxylate-atropine and Umeclidinium bromide / vilanterol inhaled 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 antimuscarinic effects.
What to do
Monitor for urinary retention, constipation, visual symptoms and dry mouth. Limit the duration of diphenoxylate-atropine.
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 Diphenoxylate-atropine
- Diphenoxylate-atropine + Isocarboxazid Contraindicated
- Diphenoxylate-atropine + Phenelzine Contraindicated
- Diphenoxylate-atropine + Tranylcypromine Contraindicated
- Alfentanil + Diphenoxylate-atropine Major
- Alvimopan + Diphenoxylate-atropine Major
- Amitriptyline + Diphenoxylate-atropine Major
Frequently asked questions
Can I take Diphenoxylate-atropine with Umeclidinium bromide / vilanterol inhaled?
MediHelp rates the interaction as moderate. Diphenoxylate-atropine and Umeclidinium bromide / vilanterol inhaled 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. Umeclidinium is an inhaled antimuscarinic, and atropine adds systemic anticholinergic effects. Together they may increase dry mouth, urinary retention, constipation and, in susceptible patients, worsen narrow-angle glaucoma.
How serious is the interaction between Diphenoxylate-atropine and Umeclidinium bromide / vilanterol inhaled?
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 urinary retention, constipation, visual symptoms and dry mouth. Limit the duration of diphenoxylate-atropine.
What other medicines interact with Diphenoxylate-atropine?
MediHelp also lists interactions of Diphenoxylate-atropine with, for example, Isocarboxazid, Phenelzine, Tranylcypromine. The full list is on the Diphenoxylate-atropine page.
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