(September 8, 2016, 1:23 PM EDT) -- BOSTON — Zohydro maker Zogenix Inc. and Massachusetts on Sept. 7 stipulated to dismissal without prejudice of the company’s federal lawsuit challenging the state’s restrictions of the opioid pain drug (Zogenix, Inc. v. Charles D. Baker, et al., No. 14-11689, D. Mass.).

In 2014, Massachusetts declared a public health emergency due to opioid addiction and deaths. The state enacted regulations that restricted the prescribing of Zohydro because of its potential for addiction.

Zogenix sued the state in the U.S. District Court for the District of Massachusetts,...