Clinical Characteristics of Over‐The‐Counter Drug Misusers in Psychiatric Practice in Japan: Comparison Between Codeine Misusers and Dextromethorphan Misusers

These findings highlight the importance of acute-phase management, assessment of comorbid psychiatric disorders, and interventions that include suicide-risk evaluation in supporting individuals who misuse DXM. Furthermore, preventive education incorporating perspectives on mental-health-focused suicide prevention, as well as regulatory measures for OTC medication sales, are urgently needed.