Generous guidance your specialist before taking any medication. Dull Name: HYDROCHLOROTHIAZIDE - ORAL Pronounced: (HYE-droe-KLOR-goodness THYE-a-zide) Hydrochlorothiazide Oral Uses: This arrangement is used to treat hypertension. Cutting down hypertension helps deflect strokes, heart strikes, and kidney issues. Hydrochlorothiazide is a "water pill" (diuretic) that causes your body to discard extra salt and water. This grows the measure of pee you make. Hydrochlorothiazide may similarly be used for purposes other than those recorded in this medication guide.