Walgreens is planning to close around 1,200 locations, as the drugstore chain and its rivals struggle to define their role for U.S. shoppers who no longer look to them first for convenience. Drugstores that once snapped up prime retail space in towns and cities across the country are in retreat.

The pharmacy giant said it would close the stores over the next three years and plans to “redeploy” the majority of the workers at the closed stores.