Medication info
Lasix (Furosemide)

Lasix (Furosemide)

Prescription medicationTabletOral
Ingredient · strength
Furosemide›40mg / 1 tablet
Manufacturer / importer
(HanDoc Inc.)
Appearance
It's a white, round tablet.
Packaging
100 tablets/box [10 tablets/PTP x10], 500 tablets/bottle
Approval status
Active

MFDS item code 196400037 · Approved 1964.06.30 · Insurance code 652100200

Summary

Main use
Treatment of edema (e.g., cardiac, renal, and hepatic edema) and hypertension
Who takes it
Adults · Children
Adult dose
(Oral: tablets) Adults: Administer 20-80 mg of furosemide orally once daily, every day or every other day. If an adequate effect is not achieved, increase the dose by 20-40 mg every 6-8 hours and administer 1-2 times daily. In severe cases, up to 600 mg daily may be administered. For hypertension, administer 80 mg daily in 2 divided doses. If an adequate effect is not achieved, use in combination with another antihypertensive (e.g., reserpine). (Injection) Adults: Inject 20-40 mg of furosemide intravenously or intramuscularly once daily. If an adequate effect is not achieved, increase the dose by 20 mg every 2 hours and administer by injection 1-2 times daily.
Child dose
(Oral: tablets) Children: Administer 2 mg/kg of this medicine. If an adequate effect is not achieved, increase the dose by 1-2 mg/kg every 6-8 hours. (Injection) Children: Inject 1 mg/kg intravenously or intramuscularly. Increase the dose by 1 mg/kg every 2 hours and administer by injection.

Ingredients

Manufacturer
(HanDoc Inc.)

Efficacy & effects

Treatment of edema (e.g., cardiac, renal, and hepatic edema) and hypertension

  • Hypertension
  • cardiac edema
  • renal edema
  • hepatic edema
  • peripheral vascular edema
  • acute pulmonary edema
View approved original text

This medication is used primarily for the treatment of hypertension, cardiac edema due to heart failure, renal edema due to kidney disease, hepatic edema due to cirrhosis, peripheral edema, and acute pulmonary edema. It is available in both oral tablets and injectable forms, and both forms are effective for blood pressure control and removing excess fluid from the body. This drug helps to expel unnecessary fluid from the body, alleviating edema and reducing the burden on the heart and kidneys, thereby improving overall health.

How to take

Adult dose

(Oral: tablets) Adults: Administer 20-80 mg of furosemide orally once daily, every day or every other day. If an adequate effect is not achieved, increase the dose by 20-40 mg every 6-8 hours and administer 1-2 times daily. In severe cases, up to 600 mg daily may be administered. For hypertension, administer 80 mg daily in 2 divided doses. If an adequate effect is not achieved, use in combination with another antihypertensive (e.g., reserpine). (Injection) Adults: Inject 20-40 mg of furosemide intravenously or intramuscularly once daily. If an adequate effect is not achieved, increase the dose by 20 mg every 2 hours and administer by injection 1-2 times daily.

Child dose

(Oral: tablets) Children: Administer 2 mg/kg of this medicine. If an adequate effect is not achieved, increase the dose by 1-2 mg/kg every 6-8 hours. (Injection) Children: Inject 1 mg/kg intravenously or intramuscularly. Increase the dose by 1 mg/kg every 2 hours and administer by injection.

Precautions

This drug is a powerful diuretic that significantly increases urine output, affecting the body's fluid and electrolyte balance. Overdosing can lead to a deficiency of necessary fluids and electrolytes in the body, resulting in serious health problems, thus regular blood tests and dose adjustments under a doctor's guidance are essential. Additionally, it should not be used by those who have allergies to this medication, certain kidney and liver diseases, severe electrolyte imbalances, or those who are pregnant or breastfeeding. Patients with urinary excretion issues or those who have specific cardiovascular diseases, diabetes, or cirrhosis should use this drug with special caution and regular health checks are necessary. During treatment, sodium, potassium, creatinine, and blood glucose levels should be frequently monitored to manage potential electrolyte imbalances or fluid loss. Extra caution should be observed, especially in the presence of vomiting, diarrhea, excessive sweating, and in severe cases, medication may be temporarily discontinued. Dizziness or drowsiness may occur, so dangerous activities such as scaffolding or driving should be avoided. It is recommended to take this medication on an empty stomach, and when using it in conjunction with other medications, consultation with a doctor or pharmacist is required to prevent side effects from interactions that could increase or decrease efficacy. Pregnant or breastfeeding women should not take this medication as it may affect the fetus or infant. Children and elderly patients should use this medication particularly cautiously, starting at lower doses and monitoring for potential side effects like hypotension or dizziness due to fluid loss in the elderly. In case of overdose, serious symptoms such as hypotension, dehydration, electrolyte imbalance, and cardiac arrhythmias may arise, requiring immediate medical attention. It is better to take this medication primarily in the morning and store it in a safe place out of the reach of children.

Side effects

Hyponatremia, hypochloremia, hypokalemia, hypocalcemia, hypomagnesemia, electrolyte disturbances and metabolic alkalosis, dehydration, hypovolemia, increased serum creatinine and urea, increased serum cholesterol and triglycerides, increased serum uric acid and gout attacks, impaired glucose tolerance, Pseudo-Bartter syndrome, arrhythmia, orthostatic hypotension, thrombosis, vasculitis, acute urine retention, interstitial nephritis, renal calcification, kidney stones, increased BUN and serum creatinine, increased urine output, increased sodium and chloride in urine, renal failure, thirst, nausea, vomiting, diarrhea, acute pancreatitis, loss of appetite, intrahepatic cholestasis, increased hepatic transaminases, jaundice, visual disturbances, hearing impairment, tinnitus, hearing loss, pruritus, urticaria, rash, bullous dermatitis, erythema multiforme, exfoliative dermatitis, Stevens-Johnson syndrome, toxic epidermal necrolysis, similar to pemphigus, acute generalized pustular dermatitis, purpura, photosensitivity reactions, drug-induced rash, lichenoid reactions, anaphylaxis, exacerbation of systemic lupus erythematosus, sensory disturbances, hepatic encephalopathy, decreased concentration and reaction time, confusion, dizziness, feeling of heaviness, lightheadedness, drowsiness, weakness, syncope, loss of consciousness, thrombocytopenia, leukopenia, neutropenia, agranulocytosis, eosinophilia, anemia, aplastic anemia, hemolytic anemia, blood concentration, muscle cramps, muscle stiffness, myasthenia, rhabdomyolysis, risk of congenital patent ductus arteriosus, pain at the intramuscular injection site, fever, malaise, fatigue

Not everyone experiences these, and they can vary from person to person.

Storage

This medication should be stored in a tightly sealed container to prevent air or humidity from entering. Additionally, it is important to store the medication in a cool place away from direct sunlight to prevent degradation.

Appearance and packaging

Appearance

It's a white, round tablet.

Package unit

100 tablets/box [10 tablets/PTP x10], 500 tablets/bottle

Same-ingredient medicines

Even with the same ingredient, strength, dosage form and how it is taken can differ.

Even with the same ingredient, the dose and directions can differ by strength and dosage form. Talk to a doctor or pharmacist before switching from a medication you are already taking.

Questions about this medicine

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This drug information is based on data provided by the Korea Ministry of Food and Drug Safety.
Consult a doctor or pharmacist for accurate dosage, administration, and usage instructions.