The U.S. Department of Justice has filed a nationwide lawsuit against Walgreens, accusing the pharmacy chain of knowingly filling millions of prescriptions that lacked legitimate medical purposes, including a significant number of opioid prescriptions. The lawsuit alleges that Walgreens disregarded multiple warning signs and proceeded to dispense millions of unlawful prescriptions, contributing to the ongoing opioid crisis. Following the announcement of the lawsuit, Walgreens shares experienced a decline, reflecting investor concerns over the potential fallout from these allegations. In response, Walgreens has issued statements defending its practices while also engaging in legal battles with federal authorities over the claims.