Acebutolol and Metolazone interaction

Acebutolol and Metolazone: both prescribing labels flag this combination with the strongest language, such as a contraindication, a boxed warning, or an instruction to avoid it.

Major

Do not combine without a prescriber's guidance. The label language below is the strongest FDA uses.

What the FDA labels say

From the Metolazone label · effective 2026-01-15

Major

Other Antihypertensive Drugs When metolazone tablets, USP, are used with other antihypertensive drugs, particular care must be taken to avoid excessive reduction of blood pressure, especially during initial therapy.

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Moderate

Dosage adjustments of other antihypertensives may be necessary.

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Minor

Other Antihypertensives When metolazone tablets, USP, are used with other antihypertensive drugs, care must be taken, especially during initial therapy.

Drug interactionsby drug classView label on DailyMed

From the Acebutolol (Acebutolol Hydrochloride) label · effective 2025-11-07

Moderate

Although β-blockers should be avoided in overt cardiac failure, acebutolol can be used with caution in patients with a history of heart failure who are controlled with digitalis and/or diuretics.

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Minor

At the first signs of failure, patients should be digitalized and/or be given a diuretic and the response observed closely.

Warningsby drug classView label on DailyMed
Minor

If cardiac failure continues despite adequate digitalization and/or diuretic, acebutolol therapy should be withdrawn.

Warningsby drug classView label on DailyMed

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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.