Final answer:
Furosemide is used to reduce fluid buildup in the lungs by increasing urine production, aiding in the management of heart failure.
Step-by-step explanation:
The purpose of taking furosemide, a loop diuretic, is to help manage heart failure by decreasing fluid buildup in your lungs and other parts of the body. Furosemide works by inhibiting the reabsorption of sodium (Na+) and chloride (Cl-) ions in the ascending limb of the loop of Henle, which is part of the nephron in the kidneys.
By blocking this reabsorption, more water is excreted as urine, reducing fluid congestion and helping improve symptoms of heart failure.