Walgreen sales up 5.6% in May, completed acquisition

Deerfield, Ill. -- Walgreen Co. said its same-store sales role 5.6% in May, better than Wall Street expected. Walgreen said pharmacy revenue from those stores rose 6.7% as it filled 7.1% more prescriptions. Front-end same-store sales grew 3.6%. The company also said it completed its acquisition of Drugstore.com, an online health and beauty retailer. Walgreen agreed to buy the company in March for $429 million.