A new drug which is increasingly being detected in overdoses and deaths is causing concern for support groups in Scotland

Xylazine is a powerful animal tranquiliser which is known as "tranq dope" or "zombie" when cut with heroin and fentanyl by drug dealers.

The synthetic drug lowers breathing and heart rate to dangerously low levels and can cause large open skin wounds, which have led to it being dubbed a "flesh-eating zombie drug".

Earlier this year, Public Health Scotland (PHS) issued an alert, saying people who take illegal drugs might not be aware that xylazine is present in their supply. In May, its Radar report said xylazine had been detected in five deaths at the end of last year.