Oedema due to cardiac and hepatic disease (ascites). Oedema due to renal disease (in the nephrotic syndrome, therapy of underlying diseases has precedence). Acute cardiac insufficiency, especially in pulmonary oedema (administration in conjunction with other therapeutic measures). Reduced urinary output due to gestoses (after restoring the fluid volume to normal). Supportive measures in brain oedema. Oedema due to bums. Hypertensive crisis (in addition to other antihypertensive measures). To support forced diuresis in poisoning.