The inclusion criteria for the study were as follows:
• Patients with a diagnosis of schizophrenia, according to
the DSM-IV-TR criteria.
• Age between 18 and 75.
• Patients receiving clozapine and with a BMI of >25.
Patients with following criteria were not included in the study:
• Patients receiving hormonal medications.
• Patients with other serious medical or mental illness,
including seizure based on patients’ medical records or
examination by a neurologist.
• Chronic diseases, including high blood pressure or
diabetes mellitus.
• Patients with an abnormal liver functions test, kidney
function test, thyroid function test or fasting blood sugar
(FBS) at the onset of the study.
• Female patients who were breastfeeding or had a
positive beta-human chorionic gonadotropin test.
• Patients who were substance abuser or patients who were
taking any medications during the 1-month before the study.