If no delirium symptoms develop within 7-days after initiation of the study intervention, administration of the assigned intervention treatment is stopped (after 14 doses). Further admission course will be evaluated by retrospective analysis of patients' charts. In patients discharged home within 7-days after initiation of the study intervention, study medication is aimed to be stopped the day before discharge since it takes approximately 12 - 38 hours to eliminate half of the originally administered oral haloperidol dose. These patients will be subjected to en extended physical examination on the day of discharge to evaluate any possible side-effects related to the intervention, if possible. The independent physician and researchers can be contacted for questions any time.