"Because I conclude that the Commonwealth’s emergency order is preempted by federal law, plaintiff’s motion is allowed," Zobel wrote.
Zobel's order goes into effect April 22.
In her ruling, Zobel outlines her reasoning, among which he lists as the injunction being in the public interest.
"[A]lthough the ban may prevent someone from misusing the drug, the ban prevents all in need of its special attributes from receiving the pain relief Zohydro ER offers," Zobel wrote.
The drug's maker, Zogenix, filed a motion in federal court last week seeking an injunction to the state's ban that came after Gov. Deval Patrick last month declared a public health emergency because of an "epidemic of opiate abuse."