ALDACTONE 100MG TABALDACTONE 100mg contains Spironolactone, a potassium sparing diuretic used to treat conditions related to fluid retention and high blood pressure. It works by blocking the action of aldosterone, reducing water and sodium retention while preserving potassium. Uses: Treatment of edema (fluid retention) associated with heart failure, liver cirrhosis, or kidney disorders. Management of hypertension (high blood pressure). Treatment of hyperaldosteronism