The Bureau of Drug and Narcotic (BDN), Department of Medical Sciences was founded in 2002, by merging of two existing divisions, Division of Drug Analysis and Division of Narcotic, to form a superior entity with higher management potential, in accordance with the State Administration Act Vol.5 B.E.2545 (2002) and the Act on Organization of Ministries, Sub-Ministries and Departments B.E. 2545. As a result, it led to the optimal effectiveness and achievement of the organization. Currently, the BDN consists of seven major units: Quality and Technical Development Section, Chemical and Physical Testing Section, Biological Testing Section, Narcotic Section, Reference Standard Center, Thai Pharmacopoeia Section, and Administrative Office.