text:  WFMD News. As the opioid crisis in Maryland continues to escalate, narcotics dealers have included two more potent drugs to the mix of heroin and fentanyl. Xylazine and medetomidine are being found in overdose victims. The Frederick County Legislative Delegation has sent a letter to Dr. Laura Scott, the Secretary of the Department of Health, asking that these two drugs be added to the schedule of controlled substances, making them illegal to possess. Historically, Xylazine and