Drug interactions
Formoterol + Gilteritinib
Severity: Moderate
Formoterol and Gilteritinib: 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
Gilteritinib prolongs the QT interval and formoterol can also prolong QTc and lower potassium. Together they may raise the risk of torsades de pointes.
What this interaction means in plain words
Formoterol and Gilteritinib 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.
Formoterol belongs to Respiratory; Gilteritinib belongs to Oncology.
Why it happens
Additive QTc prolongation, with beta-agonist-induced hypokalemia as a further contributor.
What to do
Monitor ECG and serum potassium and magnesium, and correct abnormalities. Reduce or stop the agents 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?
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Other interactions of Formoterol
- Adagrasib + Formoterol Major
- Amiodarone + Formoterol Major
- Amisulpride + Formoterol Major
- Amitriptyline + Formoterol Major
- Amoxapine + Formoterol Major
- Arformoterol + Formoterol Major
Other interactions of Gilteritinib
- Gilteritinib + Pimozide Contraindicated
- Amiodarone + Gilteritinib Major
- Amisulpride + Gilteritinib Major
- Amitriptyline + Gilteritinib Major
- Anagrelide + Gilteritinib Major
- Apalutamide + Gilteritinib Major
Frequently asked questions
Can I take Formoterol with Gilteritinib?
MediHelp rates the interaction as moderate. Formoterol and Gilteritinib 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. Gilteritinib prolongs the QT interval and formoterol can also prolong QTc and lower potassium. Together they may raise the risk of torsades de pointes.
How serious is the interaction between Formoterol and Gilteritinib?
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 ECG and serum potassium and magnesium, and correct abnormalities. Reduce or stop the agents if QTc becomes markedly prolonged.
What other medicines interact with Formoterol?
MediHelp also lists interactions of Formoterol with, for example, Adagrasib, Amiodarone, Amisulpride. The full list is on the Formoterol page.
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