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Furosemide
  • Treatments
  • High Blood Pressure

Furosemide

Generic name: furosemide (oral/injection) [ fur-OH-se-mide ]
Brand names: Lasix, Diaqua-2, Lo-Aqua
Drug class:Loop diuretics

Medically reviewed by Philip Thornton, DipPharm. Last updated on Jul 21, 2021.

What is furosemide?

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 using furosemide, tell your doctor if you have kidney disease, enlarged prostate, urination problems, cirrhosis or other liver disease, an electrolyte imbalance, high cholesterol, gout, lupus, diabetes, or an allergy to sulfa drugs.

Tell your doctor if you have recently had an MRI (magnetic resonance imaging) or any type of scan using a radioactive dye that is injected into your veins. Do not take more of this medication than is recommended.

If you are being treated for high blood pressure, keep using this medication even if you feel fine. High blood pressure often has no symptoms.

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: