How does caffeine act as a diuretic?
A) By inhibiting the secretion of ADH
B) By increasing blood flow to the kidney
C) By inhibiting active transport of sodium
D) None of these are correct.

Question

Quizplus · Accepted Answer

Alcohol inhibits the secretion of ADH. Caffeine increases the blood flow to the kidney, which increases the glomerular filtration rate. It also decreases the amount of sodium reabsorbed, so the net effect is large volumes of urine containing sodium. Diuretic drugs are often prescribed for hypertensive patients to reduce their blood pressure. Many of these drugs work by inhibiting the active transport of sodium. These drugs result in large volumes of urine containing sodium.

How Does Caffeine Act as a Diuretic