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Drug interactions

Umeclidinium bromide / vilanterol inhaled + Voriconazole

Severity: Moderate

Umeclidinium bromide / vilanterol inhaled and Voriconazole: 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

Vilanterol is a beta-agonist that can prolong QTc and cause tachycardia, and voriconazole can prolong QT. Voriconazole may also raise vilanterol exposure through CYP3A4 inhibition. Systemic exposure from inhalation is low, so the effect is usually modest.

What this interaction means in plain words

Umeclidinium bromide / vilanterol inhaled and Voriconazole 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.

Evidence level: Low

Why it happens

Additive QT prolongation, plus CYP3A4 inhibition increasing vilanterol exposure.

What to do

Monitor for palpitations and arrhythmia, and consider an ECG in patients with cardiac risk factors. Correct electrolytes.

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?

Bring a full list of your medicines, including over-the-counter products, supplements and herbal remedies, to every pharmacy visit.

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Frequently asked questions

Can I take Umeclidinium bromide / vilanterol inhaled with Voriconazole?

MediHelp rates the interaction as moderate. Umeclidinium bromide / vilanterol inhaled and Voriconazole 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. Vilanterol is a beta-agonist that can prolong QTc and cause tachycardia, and voriconazole can prolong QT. Voriconazole may also raise vilanterol exposure through CYP3A4 inhibition. Systemic exposure from inhalation is low, so the effect is usually modest.

How serious is the interaction between Umeclidinium bromide / vilanterol inhaled and Voriconazole?

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 palpitations and arrhythmia, and consider an ECG in patients with cardiac risk factors. Correct electrolytes.

What other medicines interact with Voriconazole?

MediHelp also lists interactions of Voriconazole with, for example, Avanafil, Butabarbital, Carbamazepine. The full list is on the Voriconazole page.

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