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Spironolactone
Pronounced speer-oh-no-LAK-tone
Brand names: Aldactone
Type: Potassium-sparing diuretic (water pill) · All Heart & Blood Pressure Medicines
What Spironolactone is used for
- Heart failure
- High blood pressure
- Fluid buildup in liver disease
- Hormone-related acne and hair growth in women
◆ Kidney note
Use with great caution in kidney disease because of potassium buildup; kidney function and potassium are checked closely.
Common side effects
- Breast tenderness or enlargement in men
- Increased urination
- Dizziness
- Changes in menstrual periods
Important cautions
- Can raise potassium to dangerous levels — blood tests are essential, especially combined with kidney disease or other potassium-raising medicines
- Can seriously harm an unborn baby — generally avoided in pregnancy
How it comes
Tablets, liquid. This guide lists forms only — it never lists strengths or doses.
Toxicity lists: Spironolactone also appears on Medicines That Can Harm the Kidneys.
Related medicines — Heart & Blood Pressure Medicines
Condition guides on MedicalVideos.com
- High Blood Pressure (Hypertension) — videos, articles and guides · medicines for high blood pressure (hypertension)
Please note: This page is a patient-education summary, not medical advice, and it deliberately contains no doses. Medicines affect everyone differently — always follow your own prescription and talk to your doctor or pharmacist before starting, stopping or changing any medicine.