Walgreens June Sales Increase 6.8 Percent

DEERFIELD, Ill., July 6, 2011 - Walgreens (NYSE: WAG) (NASDAQ: WAG) had June sales of $6.04 billion, an increase of 6.8 percent from $5.65 billion for the same month in 2010.

Total front-end sales increased 6.4 percent in June, while comparable store front-end sales increased 4.7 percent. Customer traffic in comparable stores increased 1.3 percent and basket size increased 3.4 percent.

Prescriptions filled at comparable stores increased 5.0 percent in June. Calendar day shifts positively impacted prescriptions filled in comparable stores by 0.3 percentage point.

June pharmacy sales increased 6.2 percent, while comparable pharmacy sales increased 4.9 percent. Calendar day shifts positively impacted pharmacy sales in comparable stores by 0.3 percentage point. Comparable pharmacy sales were negatively impacted by 2.1 percentage points due to generic drug introductions in the last 12 months. Pharmacy sales accounted for 65.6 percent of total sales for the month.

Sales in comparable stores (those open at least a year) increased 4.8 percent. The effect of calendar day shifts positively impacted total comparable sales by 0.2 percentage point.

Calendar year-to-date sales were $36.11 billion, an increase of 7.8 percent from $33.50 billion in 2010.

Fiscal 2011 year-to-date sales for the ten months were $60.25 billion, up 7.2 percent from $56.20 billion in fiscal 2010.

Walgreens opened 15 stores during June, including two relocations, acquired seven stores and closed one for a net increase of 19 stores in the month.

At June 30, Walgreens operated 8,184 locations in all 50 states, the District of Columbia, Puerto Rico and Guam. That includes 7,733 drugstores, 192 more than a year ago, including 29 stores acquired over the last 12 months, and the company also operates worksite health and wellness centers, home care facilities and specialty and mail service pharmacies. Its Take Care Health Systems subsidiary manages more than 700 in-store convenient care clinics and worksite health and wellness centers.

Note that this year’s July will have one additional Sunday and one fewer Thursday compared with July 2010 which will negatively impact comparable pharmacy sales and prescriptions filled.

Please note: Sales numbers and the adjustments shown in the table are preliminary, unaudited and subject to revision. Comparable stores are defined as those drugstore locations open for at least 12 consecutive months without closure for seven or more consecutive days and without a major remodel or a natural disaster in the past 12 months. Acquired operating locations and relocations are not included as comparable stores for the first 12 months after the acquisition or relocation.

Statements in this release that are not historical are forward-looking statements made pursuant to the safe harbor provisions of the Private Securities Litigation Reform Act of 1995. These forward-looking statements are not guarantees of future performance and involve risks, assumptions and uncertainties, including, but not limited to, changes in economic and business conditions, competition, acquisitions, divestitures, changes in vendor, payer and customer relationships, outcomes of legal and regulatory matters and other factors described in Item 1A (Risk Factors) of our most recent Annual Report on Form 10-K and Quarterly Report on Form 10-Q, each of which is incorporated herein by reference, and in other documents that we file or furnish with the Securities and Exchange Commission. Should one or more of these risks or uncertainties materialize, or should underlying assumptions prove incorrect, actual results may vary materially from those indicated or anticipated by such forward-looking statements. Accordingly, you are cautioned not to place undue reliance on these forward-looking statements, which speak only as of the date they are made. Except to the extent required by law, Walgreens does not undertake, and expressly disclaims, any duty or obligation to update publicly any forward-looking statement after the distribution of this release, whether as a result of new information, future events, changes in assumptions or otherwise.