Drug interactions
Bumetanide + Chlorthalidone
Severity: Moderate
Bumetanide and Chlorthalidone: 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
Adding a thiazide-type diuretic to a loop diuretic produces a markedly enhanced diuresis and is sometimes used for diuretic resistance. It raises the risk of severe hypokalemia, hyponatremia, hypomagnesemia and volume depletion.
What this interaction means in plain words
Bumetanide and Chlorthalidone 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.
Bumetanide belongs to Cardiovascular; Chlorthalidone belongs to Cardiovascular.
Why it happens
Sequential nephron blockade increases distal sodium delivery and urinary loss of potassium and magnesium.
What to do
Check electrolytes, renal function and weight within a few days of starting the combination and regularly thereafter. Supplement potassium and magnesium as needed and reduce the diuretic doses if volume depletion occurs.
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 Chlorthalidone
Other interactions of Bumetanide
Frequently asked questions
Can I take Bumetanide with Chlorthalidone?
MediHelp rates the interaction as moderate. Bumetanide and Chlorthalidone 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. Adding a thiazide-type diuretic to a loop diuretic produces a markedly enhanced diuresis and is sometimes used for diuretic resistance. It raises the risk of severe hypokalemia, hyponatremia, hypomagnesemia and volume depletion.
How serious is the interaction between Bumetanide and Chlorthalidone?
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 electrolytes, renal function and weight within a few days of starting the combination and regularly thereafter. Supplement potassium and magnesium as needed and reduce the diuretic doses if volume depletion occurs.
What other medicines interact with Chlorthalidone?
MediHelp also lists interactions of Chlorthalidone with, for example, Amifostine, Atenolol-chlorthalidone, Candesartan-hydrochlorothiazide. The full list is on the Chlorthalidone page.
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