Antimicrobial stewardship programs (ASPs) can reduce antimicrobial prescribing errors. In this quality improvement study, researchers implemented a standardized workflow intended to reduce prescribing errors among pediatric patients on ASP-restricted medication courses (e.g., vancomycin, levofloxacin). Workflow interventions included ASP education, a pharmacy standardized operating procedure, best practice advisory in the electronic health record (EHR), and an EHR-generated list of patients on ASP-restricted medications. After implementation, ASP prescribing errors decreased from 10.9% to 4.6%.