Drug interactions
Arformoterol + Mifepristone
Severity: Moderate
Arformoterol and Mifepristone: 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
Mifepristone and the beta-agonist arformoterol can each prolong the QTc interval, and beta-agonists may also lower potassium. Combined use may raise arrhythmia risk.
What this interaction means in plain words
Arformoterol and Mifepristone 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; Mifepristone belongs to Endocrine.
Why it happens
Additive QTc prolongation, with beta-agonist-induced hypokalemia as a contributor.
What to do
Monitor ECG and serum potassium, particularly in patients with cardiac disease or other QT-prolonging drugs. Use the lowest effective arformoterol 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?
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Other interactions of Mifepristone
- Apixaban + Mifepristone Contraindicated
- Argatroban + Mifepristone Contraindicated
- Cisapride + Mifepristone Contraindicated
- Cortisone + Mifepristone Contraindicated
- Cyclosporin + Mifepristone Contraindicated
- Dabigatran etexilate + Mifepristone Contraindicated
Other interactions of Arformoterol
Frequently asked questions
Can I take Arformoterol with Mifepristone?
MediHelp rates the interaction as moderate. Arformoterol and Mifepristone 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. Mifepristone and the beta-agonist arformoterol can each prolong the QTc interval, and beta-agonists may also lower potassium. Combined use may raise arrhythmia risk.
How serious is the interaction between Arformoterol and Mifepristone?
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, particularly in patients with cardiac disease or other QT-prolonging drugs. Use the lowest effective arformoterol dose.
What other medicines interact with Mifepristone?
MediHelp also lists interactions of Mifepristone with, for example, Apixaban, Argatroban, Cisapride. The full list is on the Mifepristone page.
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