classification mnemonic

Diuretics Classification in Order of Site of Action

Pharmacology/Renal

COLT Pee

Sequential site of action along the nephron
Carbonic anhydrase inhibitors (at the proximal tubule)
Osmotic diuretics (at the Loop of Henle)
Loop diuretics (at the ascending loop)
Thiazides (at the distal tubule)

Potassium-sparing diuretics (at the collecting tubules)