There are few published reports of complications following intravenous diazepam administration. However, more than 200 cases were reported to the United States Department of Health, Education and Welfare during a 7-year period. The systemic complications have been categorized by the authors, and common contributing factors are emphasized. The information obtained from these reports provides further knowledge of both the avoidance and the treatment of such complications and emphasizes the importance of reporting the adverse effects of any drug to a central body.