UPDATE 1-Drugmaker Mallinckrodt files for second bankruptcy in the US

Drugmaker Mallinckrodt on Monday said the company and some of its units have filed for a second bankruptcy in 3 years in the U.S., with the newest restructuring plan set to reduce its debt by about $1.9 billion. It also makes generic and branded drugs such as Acthar Gel, which is used to treat multiple sclerosis and infantile spasms. Mallinckrodt, which had also filed for bankruptcy in 2020, was a defendant in more than 3,000 lawsuits alleging that it used deceptive and misleading marketing tactics to boost its sales of highly addictive opioid drugs.