SPIRONOLACTONE (speer on oh LAK tone) is a diuretic. It helps you make more urine and to lose excess water from your body. This medicine is used to treat high blood pressure, and edema or swelling from heart, kidney, or liver disease. It is also used to treat patients who make too much aldosterone or have low potassium.

This medicine may be used for other purposes; ask your health care provider or pharmacist if you have questions.