Comparison of metabolic changes in patients with schizophrenia during randomized treatment with intramuscular olanzapine long-acting injection versus oral olanzapine (vol 26, pg 422, 2011)

Metabolic changes were examined in patients with schizophrenia during treatment with either oral olanzapine or olanzapine long-acting injection (LAI). Data were collected from patients who had been stabilized on oral olanzapine (10, 15, or 20mg/day) for >= 4 weeks and then randomized to either continued olanzapine oral treatment (n=322) or LAI (n=599; 150mg/2 weeks, 405mg/4 weeks, or 300mg/2 weeks) for up to 24 weeks. Mean and categorical changes in metabolic parameters were analyzed. Mean changes in weight, glucose, and most lipids were generally not significantly different between treatment groups. Weight changes over time followed similar patterns and were not significantly different at endpoint between the two treatment-formulation groups. Low-density lipoprotein cholesterol decreased significantly less among olanzapine LAI-treated patients. Percentages of patients with potentially clinically significant changes in blood glucose and lipid concentrations were similar for the two treatments. Percentages of patients experiencing adverse events related to weight, diabetes, or dyslipidemia were also not significantly different between treatments. Metabolic changes in patients with schizophrenia appeared generally similar during treatment with oral olanzapine or olanzapine LAI. Copyright (C) 2011 John Wiley & Sons, Ltd.