Weight gain wasn’t a reported side effect of Aldactone in clinical studies.
However, Aldactone can cause hyperglycemia (high blood sugar).* If your blood sugar stays high for a long period of time, it can lead to weight gain.
Symptoms of high blood sugar can include:
fatigue (lack of energy)
feeling thirstier than usual
urinating more often than usual
nausea and vomiting
If you notice any of the above symptoms, talk with your doctor. If you’re taking Aldactone, your doctor can help determine if these are side effects of the drug and advise you on treatment.