Although the Department has not commissioned any specific research into the relationship between crystal methamphetamine use and psychosis, it does keep the evidence base under review and has commissioned the National Addiction Centre to review the evidence of harms for the Department's publication, 'Dangerousness of Drugs (2001)', copies of this publication have already been placed in the Library. The Department has identified funding for the review to be updated later this year.
In addition, the Government's advisory committee on drugs, the Advisory Council on the Misuse of Drugs (ACMD) carried out a substantial review entitled 'Methamphetamine Review' of the harms of methylamphetamine, including the risks of psychosis in 2005 prior to its reclassification as a Class A drug. This review is available on the Home Office's website at:
Methylamphetamine is also a standing item on the ACMD's Technical Committee agenda.