Metolazone is a thiazide diuretic (water pill) that helps prevent your body from absorbing too much salt, which can cause fluid retention.
Metolazone is used to treat fluid retention (edema) in people with congestive heart failure, or a kidney disorder such as nephrotic syndrome. Metolazone is also used to treat high blood pressure (hypertension).
Metolazone may also be used for purposes not listed in this medication guide.
