furosemide, Lasix

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GENERIC NAME: furosemide

BRAND NAME: Lasix

DRUG CLASS AND MECHANISM: Furosemide is a potent diuretic (water pill) that is used to eliminate water and salt from the body. In the kidneys, salt (composed of sodium and chloride), water, and other small molecules normally are filtered out of the blood and into the tubules of the kidney. The filtered fluid ultimately becomes urine. Most of the sodium, chloride and water that is filtered out of the blood is reabsorbed into the blood before the filtered fluid becomes urine and is eliminated from the body. Furosemide works by blocking the absorption of sodium, chloride, and water from the filtered fluid in the kidney tubules, causing a profound increase in the output of urine (diuresis). The onset of action after oral administration is within one hour, and the diuresis lasts about 6-8 hours. The onset of action after injection is five minutes and the duration of diuresis is two hours. The diuretic effect of furosemide can cause depletion of sodium, chloride, body water and other minerals. Therefore, careful medical supervision is necessary during treatment. The FDA approved furosemide in July 1982.

PRESCRIBED FOR: Furosemide is a powerful diuretic that is used to treat excessive accumulation of fluid and/or swelling (edema) of the body caused by heart failure, cirrhosis, chronic kidney failure, and the nephrotic syndrome. It is sometimes used alone or in conjunction with other blood pressure pills to treat high blood pressure. It also is used for treating high levels of potassium (hyperkalemia), calcium (hypercalcemia), and magnesium (hypermagnesemia).

Medically Reviewed by a Doctor on 12/10/2014



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