This document discusses different types of diuretics and their mechanisms of action. It outlines 7 categories of diuretics: 1) osmotic diuretics like urea and mannitol; 2) loop diuretics like furosemide that inhibit electrolyte reabsorption in the thick ascending limb of Henle's loop; 3) thiazide diuretics like chlorothiazide that inhibit reabsorption in the distal convoluted tubule; 4) potassium-sparing diuretics like spironolactone that inhibit aldosterone; 5) carbonic anhydrase inhibitors like acetazolamide; 6) drugs like caffeine that increase glomerular filtration rate; and 7) vas