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Drug interactions

Amiodarone + Tiotropium-olodaterol

Severity: Moderate

Amiodarone and Tiotropium-olodaterol: 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

Amiodarone markedly prolongs the QT interval, and olodaterol can cause tachycardia and hypokalemia, which raises the risk of ventricular arrhythmias including torsades de pointes. The risk is highest with electrolyte disturbances or structural heart disease.

What this interaction means in plain words

Amiodarone and Tiotropium-olodaterol 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.

Amiodarone belongs to Cardiovascular; Tiotropium-olodaterol belongs to Respiratory.

Evidence level: Moderate

Why it happens

Additive QT prolongation with beta2-agonist-induced hypokalemia and tachycardia.

What to do

Check potassium and magnesium and monitor the ECG and heart rhythm, especially when starting or increasing olodaterol. Keep to the labelled olodaterol dose.

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 Amiodarone with Tiotropium-olodaterol?

MediHelp rates the interaction as moderate. Amiodarone and Tiotropium-olodaterol 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. Amiodarone markedly prolongs the QT interval, and olodaterol can cause tachycardia and hypokalemia, which raises the risk of ventricular arrhythmias including torsades de pointes. The risk is highest with electrolyte disturbances or structural heart disease.

How serious is the interaction between Amiodarone and Tiotropium-olodaterol?

MediHelp rates it moderate, on a four-level scale (minor, moderate, major, contraindicated) based on published labels and references. What to do, in brief: Check potassium and magnesium and monitor the ECG and heart rhythm, especially when starting or increasing olodaterol. Keep to the labelled olodaterol dose.

What other medicines interact with Tiotropium-olodaterol?

MediHelp also lists interactions of Tiotropium-olodaterol with, for example, Amisulpride, Arformoterol, Arsenic trioxide. The full list is on the Tiotropium-olodaterol page.

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