Xylazine is often mixed with heroin, fentanyl and other opioids which have been taken illegally. Mixing these drugs with xylazine can boost the effects some people really feel when having them. The White Home on Wednesday specified fentanyl laced with an animal tranquilizer identified as xylazine as an “emerging menace," https://spencerqjvbe.alltdesign.com/what-is-xylazine-classified-as-fundamentals-explained-46752382