Current Addiction Reports
September 2, 2026
Kathryn Fletcher, Jack Freestone, Nadine Ezard et al.
Abstract Purpose of Review Psychedelic-assisted therapy (PAT) has re-emerged as a potential intervention for substance use disorders (SUDs), yet the psychological mechanisms underlying behaviour change remain poorly synthesised. This scoping review mapped and evaluated proposed psychological processes underpinning PAT in adults with SUDs. Recent Findings Peer-reviewed English-language empirical...
Addiction
December 22, 2025
Jonathan Brett, Toby Lea, Elizabeth Knock et al.
Abstract Background and aims There is an urgent unmet need for novel treatments for methamphetamine (MA) use disorder. We explored the qualitative experiences of people participating in a study of psilocybin‐assisted psychotherapy (PAT) to treat MA use disorder. Design and setting Qualitative study of participants enrolled in a single arm, open‐label pilot study of PAT for MA use disorder...
Addiction
September 20, 2025
Elizabeth Knock, Krista J. Siefried, Gillinder Bedi et al.
4 citations
Abstract Background & Aims There are few effective treatments for methamphetamine use disorder, despite increasing global demand. Here, we assessed the safety and feasibility of outpatient psilocybin‐assisted psychotherapy for methamphetamine use disorder. Design Single arm, open label pilot study. Setting Outpatient public stimulant treatment program at St. Vincent's Hospital, Sydney,...
BMJ Open
February 10, 2025
Kathryn Fletcher, Nadine Ezard, Krista J. Siefried et al.
1 citation
Methamphetamine use disorder is a significant public health concern. No pharmacological treatment options currently exist for methamphetamine use disorder, and psychotherapy is only moderately effective. Preliminary evidence suggests that ketamine-assisted psychotherapy produces sustained improvements in substance use and mental health symptomatology. In addition to direct antidepressant...
Frontiers in Psychiatry
December 6, 2024
Jonathan Brett, Elizabeth Knock, Kathy Watson et al.
7 citations
Methamphetamine (MA) dependence leads to severe physical and psychological issues. Current treatments, including psychosocial therapies and residential rehabilitation, face limitations such as high relapse rates, cost, and accessibility issues. As a result, there is an urgent need for novel approaches to treat MA dependence that are effective, affordable, and accessible to patients. Psilocybin,...
Frontiers in Psychiatry
March 14, 2023
Jonathan Brett, Elizabeth Knock, Paul Liknaitzky et al.
16 citations
Methamphetamine use disorder is a chronic relapsing condition associated with substantial mental, physical, and social harms and increasing rates of mortality. Contingency management and psychotherapy interventions are the mainstays of treatment but are modestly effective with high relapse rates, while pharmacological treatments have shown little to no efficacy. Psilocybin-assisted...