Hydrochlorothiazide and Sodium bicarbonate interaction

Hydrochlorothiazide and Sodium bicarbonate: the Sodium bicarbonate prescribing label 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 Sodium bicarbonate label · effective 2026-07-09

Major

Sodium bicarbonate injection is contraindicated in patients who are losing chloride by vomiting or from continuous gastrointestinal suction and in patients receiving diuretics known to produce a hypochloremic alkalosis.

Contraindicationsby 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.