Objectives: The scope of this study was to investigate the prevalence of psychotropic drug use and its association with the overburden felt by family caregivers of Psychosocial Care Center users. This is a cross-sectional study performed with 537 family caregivers in the 21st Health Region of the State of Rio Grande do Sul. Background: The prevalence of psychotropic drug use was calculated with a 95% confidence interval (95%CI) and the heterogeneity tests were performed between the strata of each independent variable.