Which example is classified as a diuretic?

Furosemide, commonly known by its brand name Lasix, is classified as a diuretic because it promotes the excretion of water and electrolytes from the body through increased urine production. This medication specifically inhibits the reabsorption of sodium and chloride in the kidney's loop of Henle, resulting in a significant increase in urine output. Diuretics are commonly used to manage conditions such as hypertension, heart failure, and edema, by helping to reduce fluid overload and lower blood pressure.

Secobarbital is a barbiturate, primarily used as a sedative or for sleep disorders, and does not have diuretic properties. Aspirin is a nonsteroidal anti-inflammatory drug (NSAID) primarily used for pain relief and anti-inflammatory purposes. Bisacodyl is a stimulant laxative used to treat constipation and does not influence diuresis. Therefore, among the options provided, Furosemide is the only drug designed for diuretic action, making it the correct choice.