Lawmakers on the U.S. Senate Judiciary Committee urged the Trump administration to conduct a scientific review of a Justice Department-backed bill to classify all illicit chemical knockoffs of the potent painkiller fentanyl in the same legal category as heroin.

Privately held pharmaceutical company Wraser Pharmaceuticals announced the publication of a White Paper addressing opioid safety.

The former chief executive of Insys Therapeutics Inc. agreed to plead guilty to participating in a scheme to bribe doctors.

Trevena Inc.’s opioid injection to treat acute pain could be abused and potentially lead to overdose, staff reviewers of the U.S. FDA said, sending the drugmaker’s shares down 66 percent.