Xylazine is popping up across the country, primarily detected after being mixed with opioids like fentanyl. The drug is typically used as a tranquilizer or sedative for horses. Now, it's become a deadly combination for humans. Xylazine has been discovered in 18 counties across the state. Dr. Mark Papich of N.C. State University discuss Xylaxine with Nate Saunders.