• depressive symptom;
  • schizophrenia;
  • switch;
  • ziprasidone


The goal of this study was to examine the efficacy and safety of ziprasidone to treat depressive symptoms in Korean patients with schizophrenia who showed stable symptoms.


In this 8-week, open-label, prospective, non-randomized, multicenter study, 34 patients with schizophrenia who showed a stable response to previous medications, maintained a stable dose, and who had depressive symptoms, were recruited. Ziprasidone was the only antipsychotic agent allowed for 8 weeks after a 2–7-week washout period.


Steady decreases were observed on the Montgomery–Asberg Depression Rating Scale, the Calgary Depression Scale for Schizophrenia, the Positive and Negative Syndrome Scale, and the Clinical Global Impression-Severity Scale scores. The Montgomery–Asberg Depression Rating Scale score was 20.26 ± 4.77 at baseline and 12.21 ± 7.94 at the end-point (P < 0.01). The Calgary Depression Scale for Schizophrenia score was 9.76 ± 4.11 at baseline and 5.00 ± 3.94 at the end-point (P < 0.01). The Positive and Negative Syndrome Scale total score was 75.24 ± 22.63 at baseline and 66.53 ± 24.28 at the end-point (P < 0.01). The Clinical Global Impression-Severity Scale score was 3.44 ± 0.66 at baseline and 3.15 ± 0.86 at the end-point (P < 0.05). No significant differences were observed for total scores on the Simpson and Angus Rating Scale, the Barnes Akathisia Rating Scale, or the Abnormal Involuntary Movement Scale between the baseline and end-point.


Ziprasidone was effective for improving depressive symptom scores and was well tolerated. Switching to ziprasidone is a good strategy in patients with schizophrenia who are experiencing depressive symptoms.