Prior research has found that electronic health record (EHR) implementation has introduced risks to patient safety. Using data from one hospital’s EHR system, this study reviewed active allergy alerts in patient records and concluded that 37% of those records required reconciliation of allergy information across different areas of the EHR. These findings highlight the need for automated reconciliation algorithms and clinical decision support tools to help clinicians identify potential allergy discrepancies and avoid patient safety risks.