Nasution, M.S., Wiryanto , W. and Wangge , G. 2026. Study of the Pharmacovigilance Reporting System Based on Hospital Reporting in North Sumatra from 2019-2024. Journal of Pharmaceutical and Sciences. 9, 1 (Mar. 2026), 716–727. DOI:https://doi.org/10.36490/journal-jps.com.v9i1.1212.