Days of Antibiotic Spectrum Coverage (DASC) and Oral Antimicrobial-Use Trends at a Community Pharmacy in Japan: A 2018–2023 Retrospective Observational Study

This study demonstrates the feasibility and benefits of the DASC/DOT as a spectrum-based indicator for appropriate antimicrobial use in community pharmacies. Therefore, the DASC/DOT serves as a practical and spectrum-sensitive indicator of outpatient antimicrobial use to guide antimicrobial stewardship in community settings. Furthermore, age-specific analyses highlighted the importance of targeted interventions to promote the judicious use of broad-spectrum antimicrobials, particularly among the elderly (≥65 years old).