Psychosis is also common in users of “normal” cannabis

BMJ 1995; 311 doi: https://doi.org/10.1136/bmj.311.7009.875a (Published 30 September 1995) Cite this as: BMJ 1995;311:875
  1. Andrew J McBride,
  2. Huw Thomas
  1. Consultant psychiatrist Mid Glamorgan Community Drug and Alcohol Team, Llwyn Yr Eos Clinic, Church Village, Mid Glamorgan CF38 1RN
  2. Senior registrar in psychiatry Drug Dependency Unit, London SE1 8EL

    EDITOR,--A S Wylie and colleagues report that three of eight patients on a methadone programme experienced psychotic symptoms after using modest amounts of “skunk” cannabis.1 The tetrahydrocannabinol content of cannabis resin seized in 1984-9 varied widely among batches, years, and countries of origin,2 the average content being …

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