Walgreens

Incorporated in 1909, Walgreens Co., along with its subsidiaries, operates one of the largest drugstore chains in the United States. The firm specializes in selling prescription/nonprescription drugs and general merchandise, such as household products, convenience foods, personal/beauty care, candy, photofinishing and seasonal items. Some of its pharmacy services include retail, specialty, infusion, medical facility, long-term care and mail service. The firm operates nearly 8,046 outlets across the United States, the District of Columbia and Puerto Rico.