Furosemide is a loop diuretic (water pill) that prevents your body from absorbing too much salt. This allows the salt to instead be passed in your urine.

Furosemide is used to treat fluid retention (edema) in people with congestive heart failure, liver disease, or a kidney disorder such as nephrotic syndrome.

Furosemide is also used to treat high blood pressure (hypertension).

Warnings

You should not use furosemide if you are unable to urinate.

Do not take more than your recommended dose. High doses of furosemide may cause irreversible hearing loss.

Before taking this medicine

You should not use furosemide if you are allergic to it, or if you are unable to urinate.

Tell your doctor if you have ever had:

• kidney disease;

• enlarged prostate, bladder obstruction, urination problems;

• cirrhosis or other liver disease;

• an electrolyte imbalance (such as low levels of potassium or magnesium in your blood);

• gout;

• lupus;

• diabetes; or

• a sulfa drug allergy