Diuretics such as HCT, indapamide, chlortalidone, torasemide, furosemide and triamterene increase salt and water excretion. In this way, fluid balance can be regulated in the case of heart failure and blood pressure can be lowered in the case of arterial hypertension. Diuretic medicines used to lower blood pressure and treat heart failure. At very low doses, the blood pressure lowering effect is maintained while the diuretic effect decreases.