Walgreens is an American pharmacy store chain and the second largest in the United States, behind CVS Health's CVS Pharmacy. It specializes in filling prescriptions, health and wellness products, health information, and photo services. As of March 2025, the company operated more than 8,700 stores in the U.S. . It was founded in Chicago in 1901, and is headquartered in the Chicago suburb of Deerfield, Illinois. On December 31, 2014, Walgreens acquired Switzerland and UK-based Alliance Boots, and formed a new holding company, Walgreens Boots Alliance.
https://en.wikipedia.org/wiki/Walgreens