The public health warning came after tests on a powder recovered by gardaí investigating the suspected drug- related death of a teenager confirmed the drug U-47700, which is known on the streets as pinky, pink, or U4.
It may be in circulation in the city in white powder form and resembles cocaine.
The super-strong synthetic drug has been linked to up to 90 deaths in the US in the last nine months, including two 13-year-olds in Utah, as well as deaths in Europe.
It hit the headlines after the death of the singer Prince, who took a cocktail of drugs which included U-47700 and fentanyl. It is almost eight times more potent than heroin
Source: Eoin English, The Irish Examiner, 18/01/17