Excessive sedation may occur if parenteralbenzodiazepines are given with intramus- cular olanzapine. Parenteralbenzodiazepines should not be given until at least one hour after intramuscularolanzapine. If a parenteral benzodiazepine has already been given, intramuscularolanzapine should be given with care and the patient should be closely monitored for sedation and cardiorespiratory depression.