Company denies wrongdoing, is separately appealing a judgment the state of Oklahoma won against it.
Johnson & Johnson said Tuesday it would contribute up to $1 billion US more to a potential settlement of lawsuits alleging it and other companies fuelled the U.S. opioid crisis.
That contribution would bring the total amount the New Brunswick, N.J.-based drug manufacturer would pay to $5 billion ($6.57 billion CDN).
The additional money represents an increase to a proposed $4 billion settlement framework Johnson & Johnson (J&J) negotiated with a group of state attorneys general that was announced last year, the company said.
