The Trump administration issued a dire warning to Americans regarding a deadly new drug surfacing in U.S. communities. “Drug czar” Sara Carter joined “Hannity” on Monday to discuss medetomidine, a potent sedative sometimes called “rhino tranquilizer.” “For the first time, we partnered with the CDC to issue an alert,” Carter told Fox News host Sean Hannity. “We sent it across the country to warn first responders and doctors that we have medetomidine out there.” The federal alert warns that medetomidine is increasingly being found mixed into illicit fentanyl, something Carter warns “kills.” Its prevalence in drug seizures has grown since 2023, primarily appearing in the Northeast and Midwest, according to the health advisory. “Medetomidine represents a real threat to communities, and this once again reaffirms that the only safe level of illegal drug use is zero,” Carter, director of National Drug Control Policy, wrote in the White House alert.…