Drug interactions
Tiotropium + Umeclidinium bromide / vilanterol inhaled
Severity: Major
Tiotropium and Umeclidinium bromide / vilanterol inhaled: major 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 tiotropium and umeclidinium are long-acting inhaled antimuscarinics, so combining them duplicates therapy. This increases anticholinergic effects such as dry mouth, urinary retention, constipation, tachycardia and worsening narrow-angle glaucoma without added benefit.
What this interaction means in plain words
Tiotropium and Umeclidinium bromide / vilanterol inhaled can interact in a way that may be serious. Using them together is sometimes necessary, but it needs a deliberate decision by the prescriber, a plan for monitoring, and clear advice on the warning signs to watch for.
Why it happens
Duplicate long-acting muscarinic antagonism producing additive anticholinergic effects.
What to do
Avoid concurrent use and keep only one long-acting antimuscarinic. Stop one product and monitor for anticholinergic effects if the combination was used.
What to ask your pharmacist
- Does the benefit of taking both outweigh the risk in my case?
- Do I need any blood test, ECG or other check while on both?
- What early warning signs should I watch for, and what should I do if they appear?
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Other interactions of Tiotropium
Frequently asked questions
Can I take Tiotropium with Umeclidinium bromide / vilanterol inhaled?
MediHelp rates the interaction as major. Tiotropium and Umeclidinium bromide / vilanterol inhaled can interact in a way that may be serious. Using them together is sometimes necessary, but it needs a deliberate decision by the prescriber, a plan for monitoring, and clear advice on the warning signs to watch for. Both tiotropium and umeclidinium are long-acting inhaled antimuscarinics, so combining them duplicates therapy. This increases anticholinergic effects such as dry mouth, urinary retention, constipation, tachycardia and worsening narrow-angle glaucoma without added benefit.
How serious is the interaction between Tiotropium and Umeclidinium bromide / vilanterol inhaled?
MediHelp rates it major, on a four-level scale (minor, moderate, major, contraindicated) based on published labels and references. What to do, in brief: Avoid concurrent use and keep only one long-acting antimuscarinic. Stop one product and monitor for anticholinergic effects if the combination was used.
What other medicines interact with Tiotropium?
MediHelp also lists interactions of Tiotropium with, for example, Glycopyrrolate inhaled, Indacaterol-glycopyrronium, Revefenacin. The full list is on the Tiotropium page.
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