Walgreens has agreed to pay $100 million to settle a class-action lawsuit in which it was accused of overcharging for generic drugs. The settlement covers individuals or entities who paid for prescriptions at Walgreens using insurance between January 2007 and the present.

The lawsuit, which was filed in 2017, alleged that Walgreens required insured customers to pay more than members of its Prescription Savings Club. Members who paid an annual fee could purchase more than 500 widely prescribed generic drugs for $5, $10 and $15 for 30-day prescriptions, and $10, $20 and $30 for 90-day prescriptions without using insurance. Enrollment in the PSC required a yearly fee of $20 for individuals or $30 per family.

The complaint said that although Walgreens offered these lower prices to cash-paying customers, it charged more for the same drugs to customers using private insurance, Medicare or Medicaid. According to the plaintiffs, club prices should have been reported as its usual and customary prices. Instead, by reporting higher-than-club prices as usual and customary prices on reimbursement claims, Walgreens allegedly engaged in a hidden dual-pricing scheme.