Illegal medications such as copyright, heroin, and fentanyl could be mixed with xylazine, both to improve drug results or raise street worth by growing their pounds.45 People that use unlawful medicine may not be familiar with the presence of xylazine. But on the other hand, fentanyl and xylazine check strips. https://icelisting.com/story19492499/not-known-factual-statements-about-xylazine-hcl-for-sale-in-australia