Digoxin and Hydrochlorothiazide: Drug Interaction Guide

Quick answer: This combination requires caution. Digoxin and Hydrochlorothiazide can be used together with adjustments and monitoring.

Interaction severity: Moderate — caution required

How Digoxin interacts with Hydrochlorothiazide

Hydrochlorothiazide can cause hypokalemia and hypomagnesemia, which increase myocardial sensitivity to digoxin and the risk of digoxin-associated arrhythmias.

What you should do

Monitor potassium, magnesium, renal function, and signs of digoxin toxicity. Correct electrolyte abnormalities and consider potassium-sparing therapy when appropriate.

Key facts

Severity

Moderate — caution required

Mechanism

Hydrochlorothiazide can cause hypokalemia and hypomagnesemia, which increase myocardial sensitivity to digoxin and the r...

Action

Monitor potassium, magnesium, renal function, and signs of digoxin toxicity. Correct electrolyte abnormalities and consi...

Important medical disclaimer: This page provides educational information about drug interactions for general reference. It is not a substitute for professional medical advice, diagnosis, or treatment. Always discuss your specific medications with a qualified healthcare provider before starting, stopping, or changing any treatment. About our editorial team.

Frequently asked questions

Can I take Digoxin and Hydrochlorothiazide together?

With caution. Monitor potassium, magnesium, renal function, and signs of digoxin toxicity. Correct electrolyte abnormalities and consider potassium-sparing therapy when appropriate.

What is the severity of this interaction?

The interaction between Digoxin and Hydrochlorothiazide is classified as Moderate — caution required. Hydrochlorothiazide can cause hypokalemia and hypomagnesemia, which increase myocardial sensitivity to digoxin and the risk of digoxin-associated arrhythmias.

What should I do if I'm prescribed both?

Monitor potassium, magnesium, renal function, and signs of digoxin toxicity. Correct electrolyte abnormalities and consider potassium-sparing therapy when appropriate. Always consult your prescribing clinician — do not stop or change medications without medical guidance.

Last reviewed: by iMedic Medical Editorial Team. Our editorial process.