Walgreens is a major U.S. pharmacy and retail chain founded in 1901 in Chicago, Illinois. The company operates thousands of locations across the United States, providing prescription medications, over-the-counter drugs, health and wellness products, and convenience items. Walgreens also offers services such as immunizations, health screenings, and photo processing. The company has expanded its healthcare offerings through partnerships and in-store clinics, aiming to integrate pharmacy services with broader health solutions. Walgreens is part of Walgreens Boots Alliance, a global pharmacy-led health and wellbeing enterprise.