A system and method for identification and notification of elevated over-the-counter medication sales is disclosed. Localized alerts of elevated sales of specified over-the-counter medications and graphical views of historical sales intensity by medication category are provided. Intervention instructions to manage responses to factors causing the elevation of sales are provided. The system analyzes sales volume from stores that sell the identified medications to determine if sales volume exceeds expected thresholds. Data from individual products are combined into meaningful categories for tracking, and alerts are sent to users of data anomalies and of intervention messages or tasks requiring attention. Users view a geographic area and define their own notification events and mode. User interaction includes: a graphical representation of their geographic area with indicators of all current alerts; historical sales trend charts per category; graphical time-lapse representations of sales intensity per category; and task management to coordinate action and response.