As a result, prisoners are allegedly being given solitary confinement, losing visitation privileges, or facing other punishments.
At least three states are experiencing upticks in the number of inmate deaths caused by K2 overdoses.
All 25 of Pennsylvania's prisons are on lockdown after guards say they got sick after touching inmate possessions.
People are still "dropping" by the dozens in one New Haven green.
“There’s nothing 'natural' about it. They’re just deadly chemicals made in a lab."
They found that, of the 202 reported cases of unexplained bleeding nationwide, 95 patients tested positive for brodifacoum, a chemical used as rat poison.
Officials believe synthetic marijuana has caused two deaths and at least 56 illnesses in the city in recent weeks.
The same approach used to regulate and manage legal marijuana in several states could be used to control knockoff weed.
Yemeni convenience store owners are worried about being blamed for a recent incident involving the drug K2 that left 33 people hospitalized.