Here's a quick dump of information I found on uses for Aldactone.
Seems that it's used for certain heart conditions, water retention, and hormone imbalances, so...Hypertension, Acne and Sex Change kinda makes sense.
Aldactone Oral
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What conditions does this medication treat?
Aldactone Oral is used to treat the following:
Diagnostic Test for Primary Hyperaldosteronism, Low Amount of Potassium in the Blood, High Blood Pressure, Chronic Heart Failure, Accumulation of Fluid Resulting from Chronic Heart Failure, Fluid in the Lungs due to Chronic Heart Failure, Accumulation of Fluid caused by Cirrhosis of the Liver, Accumulation of Fluid caused by Kidney Disease, Visible Water Retention, Ascites
Aldactone Oral may also be used to treat:
Disease of Ovaries with Cysts, Diastolic Heart Failure, Male Pattern of Hair Distribution or Hirsutism in a Woman