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Loop diuretics

Last reviewed dd mmm yyyy. Last edited dd mmm yyyy

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Loop diuretics exert their diuretic effect by inhibiting reabsorption from the ascending loop of Henle, and thus are powerful diuretics. They have a tendency to cause hypokalaemia. They have less effect on bicarbonate than the thiazides.

Loop diuretics cause a dose-related diuresis within one hour of oral administration. The effect diminishes after six hours. When given intravenously, they also cause venodilatation.


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