<prompt> All of the following are potassium sparing diuretic EXCEPT:SpironolactoneTriamtereneIndapamideAmiloride  <response>: Ans. c IndapamideRef. KDT 6th ed. 540Diuretic classDrugsMOASite of actionOsmotic diureticMannitolInhibit water and solute reabsorptionAll part of tubule, but mainly proximal tubuleLoop diuretics Furosemide TorsemideInhibit Na- K-2CI co- transportThick ascending loop of henleThiazide diuretic Hydrochlor thiazide Benzthiazide Chlorthalidone IndapamideInhibit Na- CI co- transportDistal tubuleK sparing diuretic Spironolactone Triamterene Amiloride Decrease Na reabsorption Decrease K secretionCollectingtubuleCarbonic anhydrase inhibitorAcetazolamideInhibit H secretion and HCO3 reabsorption, which reduces Na reabsorptionProximaltubule 