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Drug interactions

Bendroflumethiazide + Digoxin

Severity: Moderate

Bendroflumethiazide and Digoxin: 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

Thiazide diuretics can cause hypokalemia and hypomagnesemia, which sensitize the heart to digoxin and increase the risk of arrhythmias and toxicity.

What this interaction means in plain words

Bendroflumethiazide and Digoxin 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.

Evidence level: High

Why it happens

Diuretic-induced hypokalemia and hypomagnesemia enhance digoxin binding to Na+/K+-ATPase and myocardial sensitivity.

What to do

Monitor potassium and magnesium regularly and supplement as needed; check digoxin level if toxicity is suspected.

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?

Bring a full list of your medicines, including over-the-counter products, supplements and herbal remedies, to every pharmacy visit.

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Frequently asked questions

Can I take Bendroflumethiazide with Digoxin?

MediHelp rates the interaction as moderate. Bendroflumethiazide and Digoxin 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. Thiazide diuretics can cause hypokalemia and hypomagnesemia, which sensitize the heart to digoxin and increase the risk of arrhythmias and toxicity.

How serious is the interaction between Bendroflumethiazide and Digoxin?

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 potassium and magnesium regularly and supplement as needed; check digoxin level if toxicity is suspected.

What other medicines interact with Digoxin?

MediHelp also lists interactions of Digoxin with, for example, Lily of the valley, Squill, Adagrasib. The full list is on the Digoxin page.

Full monographs, dosing and an interaction checker in the MediHelp app

Open the complete reference, check multi-drug interactions and use dosing tools in the MediHelp app.

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