Drug interactions
Formoterol + Lenvatinib
Severity: Moderate
Formoterol and Lenvatinib: 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
Lenvatinib can prolong the QT interval, and formoterol may add to this effect. Lenvatinib labeling advises ECG monitoring when it is combined with other QT-prolonging drugs.
What this interaction means in plain words
Formoterol and Lenvatinib 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; Lenvatinib belongs to Oncology.
Why it happens
Additive QTc prolongation.
What to do
Monitor ECG and correct hypokalemia, hypomagnesemia and hypocalcemia. Interrupt or reduce lenvatinib 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 Lenvatinib
- Amiodarone + Lenvatinib Major
- Amisulpride + Lenvatinib Major
- Asenapine + Lenvatinib Major
- Chlorpromazine + Lenvatinib Major
- Donepezil + Lenvatinib Major
- Haloperidol + Lenvatinib Major
Frequently asked questions
Can I take Formoterol with Lenvatinib?
MediHelp rates the interaction as moderate. Formoterol and Lenvatinib 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. Lenvatinib can prolong the QT interval, and formoterol may add to this effect. Lenvatinib labeling advises ECG monitoring when it is combined with other QT-prolonging drugs.
How serious is the interaction between Formoterol and Lenvatinib?
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 correct hypokalemia, hypomagnesemia and hypocalcemia. Interrupt or reduce lenvatinib 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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