Drug interactions
Formoterol-mometasone + Furosemide
Severity: Moderate
Formoterol-mometasone and Furosemide: 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
Formoterol, corticosteroids and loop diuretics each lower serum potassium. Used together they can produce clinically significant hypokalemia, which raises the risk of cardiac arrhythmias, particularly in patients with heart disease or on digoxin.
What this interaction means in plain words
Formoterol-mometasone and Furosemide 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-mometasone belongs to Respiratory; Furosemide belongs to Cardiovascular.
Why it happens
Additive hypokalemia: beta-2 agonism shifts potassium into cells, loop diuretics increase renal potassium loss, and corticosteroids add mineralocorticoid-type potassium wasting.
What to do
Check serum potassium and magnesium at baseline and periodically, especially with high doses or acute illness. Replace potassium as needed.
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-mometasone
Other interactions of Furosemide
- Amifostine + Furosemide Major
- Amikacin + Furosemide Major
- Carbenoxolone + Furosemide Major
- Cephaloridine + Furosemide Major
- Cisplatin + Furosemide Major
- Digoxin + Furosemide Major
Frequently asked questions
Can I take Formoterol-mometasone with Furosemide?
MediHelp rates the interaction as moderate. Formoterol-mometasone and Furosemide 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, corticosteroids and loop diuretics each lower serum potassium. Used together they can produce clinically significant hypokalemia, which raises the risk of cardiac arrhythmias, particularly in patients with heart disease or on digoxin.
How serious is the interaction between Formoterol-mometasone and Furosemide?
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 serum potassium and magnesium at baseline and periodically, especially with high doses or acute illness. Replace potassium as needed.
What other medicines interact with Formoterol-mometasone?
MediHelp also lists interactions of Formoterol-mometasone with, for example, Amiodarone, Amisulpride, Amoxapine. The full list is on the Formoterol-mometasone page.
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