Diuchlor H - Hydrochlorothiazide information Hydrochlorothiazide is an antihypertensive, diuretic drug that acts on the electrolyte reabsorption in the renal tubular mechanism increasing the excretion of chloride and sodium in equivalent amounts. The exact mechanism of its antihypertensive action is not known at this time. Hydrochlorothiazide indications Hydrochlorothiazide is typically employed for the treatment of patients suffering from hypertension, either as monotherapy or in combination with...