Express Scripts Schedules First Quarter 2007 Earnings Conference Call.

ST. LOUIS -- Express Scripts (Nasdaq: ESRX), one of the largest pharmacy benefit management companies in North America, announced today its intention to release its first quarter earnings on Monday, April 23, 2007 after 3:00pm Central Time and will hold its quarterly conference call to discuss first quarter results on Tuesday, April 24, 2007, at 8:30 a.m. Eastern Time (7:30 a.m. Central Time).

This call is being webcast and can be accessed at Express Scripts Web site at www.express-scripts.com

Express Scripts, Inc. is one of the largest PBM companies in North America, providing PBM services to over 50 million members. Express Scripts serves thousands of client groups, including managed-care organizations, insurance carriers, employers, third-party administrators, public sector, and union-sponsored benefit plans.

Express Scripts provides integrated PBM services, including network-pharmacy claims processing, home delivery services, benefit-design consultation, drug-utilization review, formulary management, disease management, and medical- and drug-data analysis services. The Company also distributes a full range of injectable and infusion biopharmaceutical products directly to patients or their physicians, and provides extensive cost-management and patient-care services.

Express Scripts is headquartered in St. Louis, Missouri. More information can be found at http://www.express-scripts.com, which includes expanded investor information and resources.