https://www.siliconvalley.com/2023/03/29/congress-moves-to-make-xylazine-a-controlled-substance/ > US lawmakers are moving to classify xylazine, the animal tranquilizer that’s increasingly infiltrating illicit drugs, as a controlled substance. > Bipartisan legislation introduced Tuesday in the House and Senate reflects growing concern over the highly dangerous sedative, commonly known as “tranq” or “tranq dope.”