Drug interactions
Amitriptyline + Umeclidinium-vilanterol
Severity: Major
Amitriptyline and Umeclidinium-vilanterol: 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
Amitriptyline can potentiate the cardiovascular effects of vilanterol and prolongs the QT interval. It also has anticholinergic effects that add to those of umeclidinium, such as dry mouth, urinary retention and tachycardia.
What this interaction means in plain words
Amitriptyline and Umeclidinium-vilanterol 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.
Amitriptyline belongs to Central Nervous System; Umeclidinium-vilanterol belongs to Respiratory.
Why it happens
Additive adrenergic stimulation, QT prolongation and anticholinergic effects.
What to do
Use only with monitoring of ECG, heart rate and blood pressure, and watch for anticholinergic effects. Consider a non-tricyclic antidepressant when feasible.
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 Umeclidinium-vilanterol
Other interactions of Amitriptyline
- Amitriptyline + Isocarboxazid Contraindicated
- Amitriptyline + Methylene blue Contraindicated
- Amitriptyline + Phenelzine Contraindicated
- Amitriptyline + Pimozide Contraindicated
- Amitriptyline + Procarbazine Contraindicated
- Amitriptyline + Safinamide Contraindicated
Frequently asked questions
Can I take Amitriptyline with Umeclidinium-vilanterol?
MediHelp rates the interaction as major. Amitriptyline and Umeclidinium-vilanterol 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. Amitriptyline can potentiate the cardiovascular effects of vilanterol and prolongs the QT interval. It also has anticholinergic effects that add to those of umeclidinium, such as dry mouth, urinary retention and tachycardia.
How serious is the interaction between Amitriptyline and Umeclidinium-vilanterol?
MediHelp rates it major, on a four-level scale (minor, moderate, major, contraindicated) based on published labels and references. What to do, in brief: Use only with monitoring of ECG, heart rate and blood pressure, and watch for anticholinergic effects. Consider a non-tricyclic antidepressant when feasible.
What other medicines interact with Umeclidinium-vilanterol?
MediHelp also lists interactions of Umeclidinium-vilanterol with, for example, Aclidinium, Amiodarone, Amoxapine. The full list is on the Umeclidinium-vilanterol page.
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