Drug interactions
Dexamethasone + Furosemide
Severity: Moderate
Dexamethasone 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
Both drugs promote potassium loss, so using them together can produce clinically meaningful hypokalemia. This raises the risk of muscle weakness and cardiac arrhythmias, especially in patients taking digoxin or with heart disease.
What this interaction means in plain words
Dexamethasone 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.
Dexamethasone belongs to Endocrine; Furosemide belongs to Cardiovascular.
Why it happens
Additive renal potassium wasting from loop diuretic action and glucocorticoid mineralocorticoid effect.
What to do
Monitor serum potassium and magnesium regularly and supplement potassium as needed. Consider a potassium-sparing agent if prolonged combined use is required.
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 Furosemide
- Amifostine + Furosemide Major
- Amikacin + Furosemide Major
- Carbenoxolone + Furosemide Major
- Cephaloridine + Furosemide Major
- Cisplatin + Furosemide Major
- Digoxin + Furosemide Major
Other interactions of Dexamethasone
- Bcg vaccine live + Dexamethasone Contraindicated
- Dexamethasone + Mifepristone Contraindicated
- Dexamethasone + Rilpivirine Contraindicated
- Dexamethasone + Smallpox vaccine live Contraindicated
- Dexamethasone + Varicella virus vaccine live Contraindicated
- Dexamethasone + Yellow fever vaccine Contraindicated
Frequently asked questions
Can I take Dexamethasone with Furosemide?
MediHelp rates the interaction as moderate. Dexamethasone 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. Both drugs promote potassium loss, so using them together can produce clinically meaningful hypokalemia. This raises the risk of muscle weakness and cardiac arrhythmias, especially in patients taking digoxin or with heart disease.
How serious is the interaction between Dexamethasone 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: Monitor serum potassium and magnesium regularly and supplement potassium as needed. Consider a potassium-sparing agent if prolonged combined use is required.
What other medicines interact with Furosemide?
MediHelp also lists interactions of Furosemide with, for example, Amifostine, Amikacin, Carbenoxolone. The full list is on the Furosemide page.
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