Pharmacy benefit manager Express Scripts sued the U.S. Federal Trade Commission on Tuesday over the regulator's recent drug pricing report, calling the report's conclusion that the prescription middlemen raise drug costs defamatory.

The Federal Trade Commission's new lawsuit against big pharmaceutical "middlemen" threatens to disrupt a system that has been beneficial for the U.S. economy.

The US Federal Trade Commission said that CVS Health's Caremark, Cigna's Express Scripts, and UnitedHealth Group's Optum illegally steered patients to higher-priced insulins.

FTC Sues Prescription Drug Middlemen for Artificially Inflating Insulin Drug Prices – Includes Caremark, Express Scripts, Optum and Affiliates

The Federal Trade Commission on Friday filed lawsuits against three prescription drug benefit managers or PBMs over concerns the companies are artificially inflating the list price of insulin drugs.

The Federal Trade Commission sued on Friday the three largest pharmaceutical intermediaries charged with negotiating drug prices on behalf of insurers, claiming they are illegally maximizing profits by steering patients to high-cost insulin products.

The Federal Trade Commission said Friday that it is suing three drug middlemen, accusing them of inflating insulin prices.