Drug used to sedate elephants is the new overdose threat on US streets, and it’s 100 times as potent as fentanyl

A drug used to sedate elephants and other large animals, 100 times as potent as the fentanyl, is suspected in spates of overdoses in several US states, where authorities say they’ve found it mixed with or passed off as heroin.

The appearance of carfentanil, one of the most potent opioids known to investigators, adds another twist to the fight against painkillers in a country already awash in heroin and fentanyl cases.

Each time authorities start to get a handle on one type of drug, another seems to pop up, said Joseph Pinjuh, chief of the Organized Crime Drug Enforcement Task Force and narcotics unit for the U.S. attorney in Cleveland.

“You feel like a kid with his finger in the dike, you know?” he said. “We’re running out of fingers.”

A man suspected of selling carfentanil as heroin was indicted this week in central Ohio on 20 counts, including murder, in connection with a July 10 death and nine other overdoses that happened within hours of one another. Some of the surviving users told investigators they thought they were buying heroin, but testing found none, Franklin County prosecutor Ron O’Brien said. The suspect, Rayshon Alexander, pleaded not guilty.

Investigators are trying to track down the source of the carfentanil. Ohio Attorney General Mike DeWine said he was unaware of any thefts of the drug, which, he noted, could be shipped from abroad or produced here.

Chinese companies sell carfentanil online, but it hasn’t shown up much in the US drug supply, according to the US Drug Enforcement Administration. There hasn’t been much evidence of carfentanil on the streets or in testing related to criminal cases, said agent Rich Isaacson, a spokesman for the DEA’s Detroit Division, which covers Ohio.