'Rhino Tranq:' Lancaster County doctor warning others about this fentanyl contaminate

LANCASTER COUNTY, Pa. (WHTM) -- The CDC issued a warning about contaminated fentanyl causing severe withdrawal and increasing overdose risk and there is a Lancaster County doctor who's also sounding the alarm. The contaminant being found in fentanyl is called medetomidine or "Rhino Tranq" on the street, and a doctor at Penn Medicine LGH is [...]