Five U.S. states filed lawsuits accusing Purdue Pharma LP of illegally marketing and selling opioids, including OxyContin.

Kentucky’s attorney general sued Walgreens Boots Alliance Inc., accusing the company of playing a role in propagating an opioid epidemic in the state.

U.S. Food and Drug Administration chief Scott Gottlieb criticized pharmacy benefit managers, health insurers and drugmakers for “Kabuki drug-pricing constructs” that profit the industry at the expense of consumers.

Amazon.com Inc., Berkshire Hathaway and JPMorgan Chase & Co. will form a healthcare company aimed at cutting costs for their U.S. employees, they said on Tuesday, sending shares in the broad healthcare sector sharply lower.