Drug interactions
Arformoterol + Dolasetron
Severity: Moderate
Arformoterol and Dolasetron: 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
Both drugs can affect cardiac repolarization, and arformoterol can lower serum potassium and raise heart rate. Combined use may increase the risk of QT prolongation and ventricular arrhythmias.
What this interaction means in plain words
Arformoterol and Dolasetron 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.
Arformoterol belongs to Respiratory; Dolasetron belongs to Gastrointestinal Tract.
Why it happens
Additive QT prolongation, with beta2-agonist hypokalemia increasing proarrhythmic risk.
What to do
Check and correct potassium and magnesium, and monitor ECG in patients with cardiac disease or other QT risk factors. Consider an alternative antiemetic if risk is high.
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 Dolasetron
- Apomorphine + Dolasetron Contraindicated
- Dofetilide + Dolasetron Contraindicated
- Dolasetron + Ibutilide Contraindicated
- Dolasetron + Pimozide Contraindicated
- Dolasetron + Thioridazine Contraindicated
- Dolasetron + Vandetanib Contraindicated
Other interactions of Arformoterol
Frequently asked questions
Can I take Arformoterol with Dolasetron?
MediHelp rates the interaction as moderate. Arformoterol and Dolasetron 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. Both drugs can affect cardiac repolarization, and arformoterol can lower serum potassium and raise heart rate. Combined use may increase the risk of QT prolongation and ventricular arrhythmias.
How serious is the interaction between Arformoterol and Dolasetron?
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 and correct potassium and magnesium, and monitor ECG in patients with cardiac disease or other QT risk factors. Consider an alternative antiemetic if risk is high.
What other medicines interact with Dolasetron?
MediHelp also lists interactions of Dolasetron with, for example, Apomorphine, Dofetilide, Ibutilide. The full list is on the Dolasetron page.
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