All About Furosemide Potassium Wasting Diuretic Medication

Lasix or Furosemide is a kind of drug that intends to cure acute pulmonary edema and other edema types that usually cause swelling. Furosemide works effectively by excreting the unwanted water or body fluids in a patient’s body; but actually, these swellings are just indirect effects from some major body ailments such as renal diseases, congestive heart failures and may more. Body swelling can also be acquired in many ways just like having an accident and many more. Patients who are under medication with furosemide should take this drug with great caution because it is a loop diuretic, which means that it contains strong agents that help in the excretion of fluids, but aside from fluids, it also excretes some of the body’s minerals or electrolytes such as potassium that may cause severe side effects. That is why furosemide is also known to be as furosemide potassium wasting diuretic.

Typically, the amount of furosemide potassium wasting diuretic in a person’s body should not be greater than usual. The usual dosage of furosemide potassium wasting in an adult is given below:

For acute pulmonary edema: 40 mg I.V. injected slowly, then repeated every 2 hours as need;

For edema: 20 to 80 mg P.O daily or b.i.d, up to 600 mg/day or 20 to 40 mg I.M. or I.V with repeated doses of 20 mg every 2 hours until the therapeutic effect is achieved;

For hypertensive crisis and acute renal failure: 100 to 200 mg I.V. over 1 to 2 minutes;

For chronic renal failure: initially, 80 mg P.O. daily, increased up to 120 mg/day until the therapeutic effect is achieved;

For hypertension: 20 to 80 mg P.O. daily


A furosemide potassium diuretic medication may also be given to pediatric patients with the following dosages:

For edema: 2 mg/kg P.O. daily with an increase of 1 to 2 mg/kg in 6 to 8 hours if needed, up to 6 mg/kg/day; or 1 mg/kg I.V. or I.M., titrated as needed to a maximum of 6 mg/kg/day.

Medication with furosemide potassium wasting may cause electrolyte and fluid imbalances, and also the patients should take specific precautions regarding with the administration of these drugs. A patient should be aware that furosemide potassium wasting drugs are contraindicated in anuric patients and also to those who have hypersensitive reactions to furosemide potassium.

Furosemide potassium wasting diuretic should be cautiously used by patients having electrolyte imbalances, should monitor their fluid intake carefully as well as their output (nothing increases, nothing decreases), they must also monitor their serum electrolyte levels frequently, monitor any signs and symptoms of hypokalemia such as muscle cramps and drowsiness, monitor their uric levels for patients with gout, monitor blood glucose levels for patients with diabetes, and they also should weight daily under controlled conditions.

There are many precautions that should be taken in mind with the furosemide potassium wasting drugs because though it is a helpful drug for edema patients, furosemide potassium wasting is not a safe drug.