Shares of drugmaker Mallinckrodt (MNK - Get Report) plunged on Thursday on a report that the company was considering filing for bankruptcy as a way of dealing with its opioid-related legal liabilities.

Mallinckrodt stock was down more than 41% to $1.52 a share in early trading on Thursday after Bloomberg reported that the company was mulling bankruptcy to deal with $15 million in opioid-related claims against its Questcor unit.

Specifically, Mallinckrodt in June cut a deal with the Department of Justice to resolve claims that sales representatives for the company's Questcor unit paid illegal kickbacks to doctors - in the form of lavish dinners and entertainment - to write prescriptions of the company's drug, H.P. Acthar Gel (Acthar), from 2009 to 2013.

The company is already facing $5 billion in debt, according to Bloomberg.

Botox maker Allergan (AGN - Get Report) at the end of August announced it had reached a settlement with two plaintiffs in Ohio in multi-district federal litigation over opioids. As part of that agreement, Allergan will pay $1.9 million to Summit County, Ohio, and $3.1 million to Cuyahoga County, Ohio.

That followed a separate opioid-related case in Oklahoma, where Johnson & Johnson (JNJ - Get Report)  was ordered to pay $572 million in damages.

Johnson & Johnson is a holding in Jim Cramer's Action Alerts PLUS charitable trust. Want to know when Jim buys or sells JNJ? Click here to learn more.