Site of action of furosemide is:-

Descending limb Name Site of action Example Mechanism Loop diuretics Thick ascending limb of Loop of Henle Furosemide Torsemide Na-K-2Cl sympoer inhibition Carbonic anhydrase inhibitors PCT Acetazolamide Dorzolamide Brinzolamide Carbonic anhydrase inhibition Thiazides DCT Hydrochlohiazide Chlohalidone Na-Cl sympoer inhibition Osmotic diuretics Non-specific Mannitol By osmotic effect Epithelial sodium channel blockers Collecting duct Amiloride Triamterene eNa channel blockade Aldosterone antagonists Collecting duct Spironolactone Epleronone Antagonism of aldosterone receptors Note Diurectics has maximum efficacy at Thick ascending limb of Loop of Henle