The “zombie drug” xylazine that’s compounding America’s opioid crisis has been linked to 11 deaths in the UK. Known on the streets “tranq” or “tranq dope”, the lethal drug is typically cut with fentanyl or heroine and xylazine – an animal tranquiliser that is making its way into the illicit drug supply. But a new study published in the journal Addiction shows it has also been found in counterfeit prescription medication tablets, THC (tetrahydrocannabinol) vapes and cocaine. In addition to enhancing the high from fentanyl or heroin, it literally rots people’s skin. Raw wounds erupt into a scaly…