Drug dealers are mixing dangerous substances in illicit pills but selling them as pure ecstasy, according to the National Drug Intelligence Bureau.
The bureau says testing by the Environmental Science and Research this year found a large number of suspected ecstasy pills containing fillers, including methamphetamine, BZP and caffeine.
Bureau coordinator Detective Inspector Stuart Mills says drug users are getting a more unpredictable and violent reaction than they expect.
Mr Mills says the inclusion of methampetamine in ecstasy pills shows dealers are selling the drug in new forms instead of just the traditional crystals - a trend he believes started in Canada.
