This study aimed to identify treatment patterns in patients with bipolar disorder receiving olanzapine according to demographic and clinical characteristics and to evaluate the effectiveness of education on weight gain, a side effect of olanzapine, in preventing weight gain.

Inclusion Criteria:

• Patients who have signed the informed consent after receiving information about the purpose and method of this study.
• Patients diagnosed with bipolar disorder and scheduled to receive olanzapine.
• Patients who understand the contents of the survey and can answer the questions directly.

Exclusion Criteria:

• Female patients who are pregnant, have childbearing potential, or are breastfeeding.
• Has received an investigational product within 12 weeks from the study enrollment or has plans to participate in another clinical trial during the participation of this study.
• Other subjects who are considered inappropriate to participate in this study by the judgment of the investigator.

Patients with bipolar disorder who require olanzapine administration