This study assess pharmacokinetics and safety of single-administration of Aripiprazole IM Depot formulation at doses of 300 and 400mg in patients with schizophrenia.

In this study, a single-center, single-dose, single-administration trial will be carried out in patients with schizophrenia diagnosed pursuant to The Diagnostic and Statistical Manual of Mental Disorders (DSM-IV-TR), to evaluate pharmacokinetics and safety of single-administration aripiprazole IM Depot (300/400 mg) after its administration in 24 patients with oral tolerance of this drug.

In this study, the washout period before administration is designed as a 35-day duration before administration of the investigational drug (aripiprazoleIM Depot), screening period a 4-week duration (28 days) before administration of the investigational drug, observation period after administration a 20-week duration after administration of the investigational drug and hospital stay a minimum 35-day duration after administration of the investigational drug.

Inclusion Criteria:

1. Subjects, and their legal representatives(or their guardian ), who have signed the informed consent form(ICF);
2. Patients with a diagnosis of schizophrenia as defined by DSM-IV-TR (295.30, 295.10, 295.20,295.90 , 295.60);
3. subjects, both male and female, who are at age between 18 and 64 (also including 18 and 64 years of age) at time of informed consent.

Exclusion Criteria:

1. Patients who have other psychiatric disorders than schizophrenia based on diagnostic criteria of DSM-IV-TR;
2. Score of Positive and Negative Syndrome Scale (PANSS): ≥120;
3. Patients with a complication or a history of diabetic mellitus;
4. Subjects who are alcoholemia overdependent of drug, or have drug abuse history;

Other protocol-defined inclusion and exclusion criteria may apply.