Study terminated due to poor recruitment

The purpose of this study is to determine whether increasing the amount (dose) of quetiapine IR (immediate release formulation) more rapidly than conventional dose increases, improves the control of symptoms as measured by the Positive and Negative Syndrome Scale (PANSS) - a psychiatric assessment scale that measures both positive and negative symptoms - in patients with acute schizophrenia or schizoaffective disorder.

Inclusion Criteria:

• Men and women, aged 18 to 65 years, who require treatment for an acute episode of schizophrenia/schizoaffective disorder as judged by their doctor

Exclusion Criteria:

• Significant and unstable conditions of hear, circulation, blood, liver, kidney; malignancies (cancer); diabetes (mellitus); history of fits or fainting. Resistance to antipsychotic medication. Current alcohol/drug abuse. Pregnant/breast feeding women.