Spironolactone

Spironolactone is used as a diuretic to remove the excess fluid caused by congestive heart failure, cirrhosis of the liver, and kidney disease. It can also be used to treat elevated blood pressure in combination with other drugs and in resistant cases of low potassium (hypokalemia). Spironolactone is also used to counteract the effects of excessive adrenal aldosterone production.Spironolactone is a specialized antagonist of aldosterone.

Spironolactone is known as a potassium-sparing diuretic. Unlike some other diuretics, it does not cause your body to lose potassium. Diuretics are sometimes referred to as 'water tablets'.
It is often used alongside other diuretics. When it is used like this, it may be prescribed as a combination tablet/capsule. Combinations like these help to reduce the number of tablets you need to take each day.
CAS NO:52-01-7
Molecular formula:C24H32O4S
Molecular weight:416.574 g/mol