Spironolactone is a diuretic that is licensed for the treatment of water retention, high blood pressure, heart failure, and low potassium levels. It can also be used to diagnose and treat primary hyperaldosteronism. Spironolactone tablets, which are available by prescription, are generally taken once or twice a day. Potential side effects include drowsiness, diarrhea, nausea, and menstrual changes.
Spironolactone (Aldactone®) is a prescription medicine that is used as a diuretic for various conditions. It is known as a "potassium-sparing" diuretic.
As with any medicine, side effects are possible with spironolactone. However, not everyone who takes the drug will experience side effects. In fact, most people tolerate it quite well. If side effects do occur, in most cases, they are minor and either require no treatment or can easily be treated by you or your healthcare provider. Serious side effects are less common.
A few of the reported side effects include:
- Diarrhea, nausea, or vomiting
- Breast development in men (gynecomastia)
- Menstrual changes, including irregular or absent periods
- Impotence, also known as erectile dysfunction or ED (see Spironolactone and Impotence).
(Click Spironolactone Side Effects to learn more, including potentially serious side effects you should report to your healthcare provider.)