Drug interactions
Cyclopenthiazide + Torsemide
Severity: Moderate
Cyclopenthiazide and Torsemide: 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
Combining a loop diuretic with a thiazide-type diuretic produces sequential nephron blockade with a markedly increased diuresis. This raises the risk of hypokalemia, hyponatremia, hypomagnesemia, volume depletion and renal impairment.
What this interaction means in plain words
Cyclopenthiazide and Torsemide 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.
Why it happens
Additive inhibition of sodium reabsorption at different nephron sites, increasing distal delivery of sodium and renal potassium loss.
What to do
Monitor electrolytes, renal function and weight within the first week after starting or changing doses. Replace potassium and magnesium as needed and use the lowest effective doses.
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 Torsemide
Frequently asked questions
Can I take Cyclopenthiazide with Torsemide?
MediHelp rates the interaction as moderate. Cyclopenthiazide and Torsemide 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. Combining a loop diuretic with a thiazide-type diuretic produces sequential nephron blockade with a markedly increased diuresis. This raises the risk of hypokalemia, hyponatremia, hypomagnesemia, volume depletion and renal impairment.
How serious is the interaction between Cyclopenthiazide and Torsemide?
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 electrolytes, renal function and weight within the first week after starting or changing doses. Replace potassium and magnesium as needed and use the lowest effective doses.
What other medicines interact with Torsemide?
MediHelp also lists interactions of Torsemide with, for example, Amikacin, Amiodarone, Carbenoxolone. The full list is on the Torsemide page.
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