Utilizing RxNorm to support practical computing applications: Capturing medication history in live electronic health records

► RxNorm was utilized for direct-capture of medication history in a live EHR system. ► The tool incorporated auto-complete search functionality and dosage ID assistance. ► Implementation used a four-factor framework including speed and coverage. ► Adaptations addressed high-speed I/O requirements and flexibility for data entry. ► Future research on search optimization, user profiling, and drug classifications.