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Aldosterone antagonist refers to drugs which antagonise the action of aldosterone at mineralocorticoid receptors. This group of drugs is often used as adjunctive therapy, in combination with other drugs, for the management of chronic heart failure. Spironolactone, the first member of the class, is also used in the management of hyperaldosteronism (including Conn's syndrome) and female hirsutism.
Additional recommended knowledge
Mode of action
Aldosterone antagonists are, as the name suggests, receptor antagonists at the mineralocorticoid receptor. Antagonism of these receptors inhibits sodium resorption in the distal tubule of the nephron in the kidneys. This interferes with sodium/potassium exchange, reducing urinary potassium excretion and weakly increasing water excretion (diuresis). 
Their adjunctive use in congestive heart failure relates to their additive diuretic effect in combination with other drugs, reducing edema and decreasing the cardiac workload.
Members of this class in clinical use include:
|This article is licensed under the GNU Free Documentation License. It uses material from the Wikipedia article "Aldosterone_antagonist". A list of authors is available in Wikipedia.|