Which of the following is a common example of a diuretic?

• A. Amiodarone
• B. Furosemide (Lasix)
• C. Metformin
• D. Atorvastatin

Answer: (B)

Furosemide, commonly branded as Lasix, is a well-known loop diuretic utilized in clinical practice. Diuretics are medications that promote the excretion of salt and water through urine by inhibiting sodium and chloride reabsorption in the kidneys. This action helps to reduce fluid retention in conditions such as heart failure, hypertension, and edema. Furosemide specifically works on the ascending loop of Henle in the nephron, leading to significant diuretic effects.

The other options listed do not exemplify diuretic actions. Amiodarone is an antiarrhythmic medication used to treat irregular heartbeats. Metformin is an oral antidiabetic agent primarily used in managing type 2 diabetes. Atorvastatin is a statin medication utilized to lower cholesterol levels and reduce the risk of cardiovascular disease. These medications serve distinct purposes and mechanisms of action that do not align with the diuretic function of furosemide.