Inclusion Criteria:

• You are an outpatient diagnosed with stable schizophrenia.
• You are a male or female in the age of 18 to 65 years old.
• You are retrospectively judged by investigators, based on clinical interview and impression, to have been stable for at least 4 weeks.
• You must be able to take olanzapine orodispersible in a single daily dose.
• You are treated with conventional oral olanzapine tablet (as monotherapy) for at least 1 month.

Exclusion Criteria:

• You have used olanzapine in the past and are no longer using it because of a bad reaction.
• You have known Human immunodeficiency virus positive (HIV+) status.
• You have known uncorrected, narrow angle glaucoma.
• You have known Leukopenia, (abnormally low white blood cell count).
• You have a serious or uncontrolled illness (for example: liver disease, history of heart disease, or inadequately controlled diabetes.)
• You have Parkinson's disease.
• You are a female patient who is either pregnant or nursing
• You are taking medications that are not allowed in the study.