<prompt> Potassium-sparing diuretics are all except:SpironolactoneTriamtereneAmilorideEthacrynic acid  <response>: classification: High efficacy diuretics - Furosemide, Bumetanide, Torasemide Medium efficacy inhibit Na-Cl sympo - Thiazides Hydrochlorothiazide, Benzthiazide, Hydroflumethiazide, Clopamide , Thiazide-like Indapamide, Xipamide, Metolazone Carbonic anhydrase inhibitors - Acetazolamide Potassium-sparing - Spironolactone Aldosterone antagonist, Amiloride, Triamterene inhibit renal epithelial Na channel Osmotic diuretics - Mannitol, Isosorbide, Glycerol Essentials of Medical Pharmacology, K.D Tripathi,6th edition, page 561 