A DANGEROUS new illicit drug which can cause violence and psychosis in users has hit Melbourne's streets.
Federal Police and drug services fear the drug, called yaa baa, is being taken mistakenly by youngsters believing it to be ecstasy.
Known as "crazy medicine" in Asia, yaa baa is a powerful methamphetamine that can cause violence and paranoia.
The revelation of its presence follows a major drug bust in Queensland last year in which a huge quantity of the drug was seized.
National Drug and Alcohol Research Centre information manager Paul Dillon said many people would not know if they were taking yaa baa.
"They are being guinea pigs," Mr Dillon said.
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Herald Sun: 'Crazy' Drug Hits Street