Ingredient

Hydrochlorothiazide

Hydrochlorothiazide is a diuretic ingredient used to treat hypertension and edema.

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1
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MFDS ingredient code M223356

What does it do?

Hydrochlorothiazide is a medication in the diuretic class that is used to lower blood pressure and eliminate excess fluid from the body. It is primarily utilized for the treatment of hypertension and edema.

This ingredient helps reduce the reabsorption of sodium and chloride in the kidneys, leading to the excretion of more fluid and electrolytes in the urine. As a result, blood volume decreases, lowering blood pressure and alleviating edema.

Commonly used for

Approved uses differ by product. Check each product's information for its actual use.

Good to know

Hydrochlorothiazide is effective for blood pressure control compared to other diuretics, and it is primarily used orally. Additionally, it is characterized by the need for careful monitoring of electrolyte balance during long-term use.

Medicines containing this ingredient

Even with the same ingredient, strength, dosage form and how it is taken can differ.

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567 total

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Even with the same ingredient, dosage and approved uses can differ by strength, dosage form and combined ingredients. Check each product's information before taking it.

Combined ingredients

Ingredients used together with this ingredient in combination products.

Questions about this ingredient

  • QWhat is the reason for frequent urination when taking Hydrochlorothiazide?

    Hydrochlorothiazide is a diuretic that reduces the reabsorption of sodium and chloride by the kidneys, allowing more fluid and salt to be excreted in the urine. This action decreases blood volume, lowers blood pressure, and alleviates edema. If taken for a long period, be mindful of electrolyte balance and follow the test guidance provided by your prescribing physician.

    Answers 1 · 2026.09.14

For anything that needs medical judgment, consult a doctor or pharmacist.

SourceKorea Ministry of Food and Drug Safety (Drug Safety Korea)

This drug information is based on data provided by the Korea Ministry of Food and Drug Safety.
Consult a doctor or pharmacist for accurate dosage, administration, and usage instructions.