Hydrochlorothiazide is a thiazide diuretic (water pill) that helps prevent your body from
absorbing too much salt, which can cause fluid retention.
Hydrochlorothiazide treats fluid retention (edema) in people with congestive heart failure,
cirrhosis of the liver, or kidney disorders, or edema caused by taking steroids or estrogen. This
medication is also used to treat high blood pressure (hypertension).
Hydrochlorothiazide may also be used for other purposes not listed in this medication
guide.