Aim: Brief psychoeducation for families of psychotic patients has been shown to significantly increase family members' knowledge of the disorder. This increase is associated with reductions in relapse and rehospitalization. The aim of this study was to assess the effectiveness of brief psychoeducation about schizophrenia to caregivers of patients in early phases of psychotic disorders in Yogyakarta, Indonesia.; Methods: This study was a prospective, randomized trial with 2 parallel groups. Subjects were patients in the early phase of psychotic disorders and their respective caregivers. Inclusion criteria included a diagnosis of acute and transient psychotic disorders, schizophrenia, schizoaffective disorder or delusional disorder. Participants were randomly assigned to either control or intervention groups by means of paired simple randomization. A brief psychoeducation was conducted for both the patients and caregivers. The interventions were conducted in 4 interactive sessions, once per week. Effectiveness was measured using standardized instruments before the intervention, and at 1 and 6 months post-intervention. Assessment instruments included the Knowledge of Psychosis (KOP), the Compliance and Relapse Assessment, the Brief Psychiatric Rating Scale and the Positive and Negative Symptoms of Schizophrenia scale.; Results: Interventions improved KOP scores significantly in the intervention group. The intervention group had increased regularity of follow-up with health providers and improved compliance. No statistically significant difference in relapses/rehospitalization was observed.; Conclusions: This study demonstrated that brief psychoeducation with caregivers of patients with early phase psychosis was feasible in our setting, significantly improved caregivers' knowledge, and resulted in improved regularity of contact with health providers and compliance with pharmacotherapy.