St. Louis County office of Express Scripts

The St. Louis County office of Express Scripts, one of the nation’s largest pharmacy benefit managers.

The federal trade watchdog on Tuesday released an interim report saying that sprawling health care conglomerates are driving out competition in the pharmacy sector and appear to be increasing prices in the process.

The interim report comes after the Federal Trade Commission in 2022 announced that it was undertaking a sweeping investigation of pharmacy middlemen known as pharmacy benefit managers, or PBMs.