The document discusses drugs that affect the kidney, focusing on different classes of diuretics. It describes five major classes of diuretics: thiazides and thiazide-like drugs, loop diuretics, potassium-sparing diuretics, carbonic anhydrase inhibitors, and osmotic diuretics. Each class is explained in terms of prototypes, pharmacodynamics, side effects, and special uses. The nursing process for safely administering diuretics is also outlined.