"Also known as "tranq dope" or "zombie heroin," tranq is made up of xylazine, an animal tranquilizer, that is mixed in with other drugs, notably fentanyl. Tranq is known to depress breathing, lengthen overdoses and cause skin ulcers and sores that can last for months. This last symptom is what makes people addicted to tranq get referred to as "zombies." (Related: Skin-rotting animal tranquilizer drug known as "tranq" spreads all over US.)"
