Online Lasix (Furosemide)
Heart & Metabolic • Educational only; not medical advice. Prescriptions at clinician discretion.
Overview
Furosemide, known by the brand Lasix, is a potent loop diuretic that promotes the excretion of sodium, chloride, and water by inhibiting the Na-K-2Cl transporter in the loop of Henle. It was introduced in the 1960s and remains essential for managing fluid overload in cardiac, renal, and hepatic conditions.
Uses
Indicated for edema associated with congestive heart failure, cirrhosis, and kidney disease, as well as for hypertension. Also used in acute pulmonary edema to reduce preload rapidly.Dosage & Administration
Typical oral dose for adults: 20–80 mg once or twice daily, adjusted by response. Intravenous Lasix is used for rapid diuresis in emergencies. Administer in the morning to avoid nocturia. Patients must have electrolyte monitoring, particularly potassium and magnesium.Side Effects & Warnings
Frequent adverse effects: dehydration, electrolyte imbalance (especially hypokalemia), dizziness, and increased urination. Rare but serious: ototoxicity with high IV doses and renal impairment. Avoid combination with nephrotoxic or ototoxic drugs.Patient Considerations
Maintain adequate hydration and dietary potassium. Stand up slowly to prevent dizziness. Inform your doctor if you notice muscle cramps or extreme thirst.Ready for next steps?
Frequently asked questions
Why is it called “Lasix”?
The name derives from “lasts six hours,” referring to its diuretic duration.
Can I drink alcohol while on Lasix?
Alcohol may worsen dehydration—avoid or limit intake.
Should I take potassium supplements?
Only if prescribed; your doctor will monitor levels and advise.
Government / NIH sources
Top Products
Meet our doctors
Licensed clinicians with evidence‑based prescribing. Learn about training, interests, and availability.