[The saluretic effect of xipamide (4-chloro-5-sulfamoyl-2',6'-salicyloxylilide) in normal subjects].

The diuretic and saluretic effectiveness of xipamide (4-chloro-5-sulfamoyl-2',6'-salicyloxylidide, Aquaphor) is determined and compared to those of chlortalidone and furosemid in normal subjects. The substance is revealed as a potent diuretic agent. In the range of 0.035--0.750 mg/kg body weight the dose-response curve of orally administered xipamide for the increase of excretion of urine, sodium and potassium ion and chloride during 24 h is described. Observing the renal activity over a period of 3 days after a single administration the duration of action is found to be up to 24 h with its maximum within the first 12 h. In the following 2 days the degree of the physiological rebound effect depends on the preceding saluretic effect and thus on the given dose. The pattern of ion-excretion (Na