Which diuretic is commonly known as Lasix?

Which diuretic is commonly known as Lasix?

• A. Spironolactone
• B. Hydrochlorothiazide
• C. Bumetanide
• D. Furosemide

Answer: (D)

Lasix is the brand name for furosemide, a loop diuretic. It works by blocking the Na-K-2Cl cotransporter in the thick ascending limb of the loop of Henle, which prevents reabsorption of sodium and chloride and pulls water along with it. This results in rapid diuresis, making it especially useful for reducing fluid buildup in conditions like heart failure, liver cirrhosis with edema, and certain kidney problems. Furosemide’s potency, ability to be given by mouth or by IV, and quick onset are why Lasix is associated specifically with this drug. Spironolactone is a potassium-sparing diuretic that acts as an aldosterone antagonist, so it’s not Lasix. Hydrochlorothiazide is a thiazide diuretic acting in the distal tubule, which is a different class with a milder, slower effect. Bumetanide is another loop diuretic and works similarly to furosemide, but the name Lasix refers to furosemide, not bumetanide.

Lasix is the brand name for furosemide, a loop diuretic. It works by blocking the Na-K-2Cl cotransporter in the thick ascending limb of the loop of Henle, which prevents reabsorption of sodium and chloride and pulls water along with it. This results in rapid diuresis, making it especially useful for reducing fluid buildup in conditions like heart failure, liver cirrhosis with edema, and certain kidney problems. Furosemide’s potency, ability to be given by mouth or by IV, and quick onset are why Lasix is associated specifically with this drug.

Spironolactone is a potassium-sparing diuretic that acts as an aldosterone antagonist, so it’s not Lasix. Hydrochlorothiazide is a thiazide diuretic acting in the distal tubule, which is a different class with a milder, slower effect. Bumetanide is another loop diuretic and works similarly to furosemide, but the name Lasix refers to furosemide, not bumetanide.