Xylazine has ordinarily been located in combination with other drugs, Specially opioids, for instance illicitly created fentanyl. Analysis suggests that many people use it intentionally to lengthen fentanyl’s euphoric effects. But xylazine’s true prevalence is unknown. Hospitals don’t test for it. Some state clinical examiners don’t routinely accomplish that, either. https://chemicalglobe.com/product-tag/xylazine-hcl-for-sale-california/