Key takeaways
Spironolactone (Aldactone) and ethacrynic acid (Edecrin) are both diuretics, but they work differently and are used for different reasons. Spironolactone is a potassium-sparing diuretic that helps treat heart failure, high blood pressure, and swelling from kidney or liver problems. It blocks aldosterone, a hormone that affects sodium and potassium levels, and is available in both tablet and oral suspension forms. Ethacrynic acid, on the other hand, is a loop diuretic mainly used to reduce swelling in people who can't take sulfa drugs. It works by removing certain electrolytes and extra fluid from your body. Unlike spironolactone, ethacrynic acid can cause temporary hearing loss and is more expensive. Spironolactone can cause side effects like breast tenderness and lower sex drive, while ethacrynic acid can lead to dizziness, loss of appetite, and high uric acid levels. Both medications require regular blood tests to monitor electrolytes and kidney function.
