Furosemide and Metoprolol and hydrochlorothiazide interaction

Furosemide and Metoprolol and hydrochlorothiazide: both prescribing labels describe an interaction that usually calls for monitoring, a dose change, or spacing the doses.

Moderate

Usually manageable with monitoring or a dose change. Tell your pharmacist you take both.

What the FDA labels say

From the Furosemide label · effective 2026-05-13

Moderate

Monitor for changes in blood pressure and adjust the dose of other antihypertensive drugs if needed.

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Moderate

Monitor diuretic effects of furosemide and adjust the dose of furosemide if needed.

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Minor

Patients receiving both indomethacin and furosemide should be observed closely to determine if the desired diuretic and/or antihypertensive effect of furosemide is achieved.

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From the Metoprolol and hydrochlorothiazide (METOPROLOL TARTRATE AND HYDROCHLOROTHIAZIDE) label · effective 2025-01-22

Moderate

If such symptoms occur, increase diuretics and restore clinical stability before advancing the dose of metoprolol.

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Moderate

Non-Steroidal Anti-Inflammatory Drugs (NSAIDs): Reduced diuretic, natriuretic, and antihypertensive effects of diuretics.

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Moderate

Lithium : Diuretics reduce the renal clearance of lithium and increase the risk of lithium toxicity.

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Moderate

Non-Steroidal Anti-Inflammatory Drugs : NSAIDs can reduce the diuretic, natriuretic, and antihypertensive effects of thiazide diuretics.

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Minor

Because of its relative beta 1 cardio-selectivity, however, metoprolol tartrate may be used in patients with bronchospastic disease who do not respond to, or cannot tolerate, other antihypertensive treatment.

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Not medical advice. Interaction Checker quotes FDA label text and NIH fact sheets. Whether an interaction matters for you depends on doses, timing, kidney and liver function, and other conditions. Confirm with a pharmacist or prescriber.