Walgreens shares sank Tuesday, the first day of trading since the Department of Justice announced a lawsuit accusing the pharmacy chain of dispensing "millions of unlawful prescriptions" with no legitimate medical purpose.

In it, the government accuses Walgreens of filling millions of unlawful prescriptions, including for excessive quantities of opioids, early refills of opioids and the so-called “holy trinity” of commonly abused drugs: an opioid, a benzodiazepine and a muscle relaxant.

The U.S. Justice Department is accusing Walgreens of filling millions of prescriptions in the last decade and more without a legitimate purpose, including for dangerous amounts of opioids,

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The U.S. Justice Department on Friday accused pharmacy chain operator Walgreens Boots Alliance of contributing to the U.S. opioid epidemic by filling millions of unlawful prescriptions for addictive painkillers and other drugs.

The Justice Department filed a lawsuit against Walgreens accusing the drugstore giant of filling millions of illegitimate prescriptions across the country since 2012.

Last week, the U.S. Department of Justice filed a civil complaint against Walgreens Boots Alliance Inc (NASDAQ:WBA) and its subsidiaries, alleging widespread violations of the Controlled Substances Act (CSA) and False Claims Act (FCA).

Shares of Walgreens Boots Alliance (NASDAQ:WBA) fell by 6% following allegations by the U.S. Justice Department that the pharmacy chain dispensed millions of unlawful prescriptions in violation of the Controlled Substances Act (CSA) and the False Claims Act (FCA).

The Justice Department has filed a nationwide lawsuit against Walgreens, alleging the pharmacy chain filled millions of prescriptions without legitimate medical purposes, particularly involving dangerous opioid combinations,