It's new, dangerous and people say the highly addictive drug trending can kill its users in one dose.
People are calling it the "Gray death."
The drug earned its nickname due to its color and concrete-like appearance, with the consistency of the substance varying from hard, chunky pieces to a fine powder.
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The potent mixture is a combination of heroin, fentanyl, carfentanil -- a drug used to tranquilize elephants -- and other opioids. It's the latest concoction to emerge in the ever-threatening opioid trend, which involves combining heroin with another opioid to produce a more powerful drug.
"Gray death is one of the scariest combinations that I have ever seen in nearly 20 years of forensic chemistry drug analysis," Deneen Kilcrease, manager of the chemistry section at the Georgia Bureau of Investigation, told the Associated Press.
The drug, which closely resembles a crack cocaine rock and has a texture like concrete, is underlining the ever-changing opioid crisis.
And though its drug's ingredients are considered lethal they are unknown to many of its users, who typically are addicts just purchasing heroin, or so they think.
According to a bulletin issued by the Gulf Coast High-Intensity Drug Trafficking Area, gray death has a higher potency than heroin and has several methods of consumption to the body: injection, smoking, snorting or swallowing.
So far, investigators have detected gray death and the overdoses caused by the drug in Ohio, Georgia, and Alabama.