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Drug interactions

Fingolimod + Osimertinib

Severity: Moderate

Fingolimod and Osimertinib: 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

Osimertinib can prolong the QTc interval, and fingolimod can cause bradycardia and QT effects. Combined use may increase the risk of ventricular arrhythmia.

What this interaction means in plain words

Fingolimod and Osimertinib 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.

Fingolimod belongs to Central Nervous System; Osimertinib belongs to Oncology.

Evidence level: Low

Why it happens

Additive QTc prolongation with fingolimod-related bradycardia.

What to do

Check a baseline ECG and electrolytes and monitor periodically during co-therapy. Discontinue osimertinib or reassess if QTc becomes markedly prolonged.

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 Fingolimod with Osimertinib?

MediHelp rates the interaction as moderate. Fingolimod and Osimertinib 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. Osimertinib can prolong the QTc interval, and fingolimod can cause bradycardia and QT effects. Combined use may increase the risk of ventricular arrhythmia.

How serious is the interaction between Fingolimod and Osimertinib?

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 a baseline ECG and electrolytes and monitor periodically during co-therapy. Discontinue osimertinib or reassess if QTc becomes markedly prolonged.

What other medicines interact with Fingolimod?

MediHelp also lists interactions of Fingolimod with, for example, Adenovirus types 4 and 7 live, Bcg vaccine live, Pimozide. The full list is on the Fingolimod page.

Full monographs, dosing and an interaction checker in the MediHelp app

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