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Sophie van der Helder

2 papers in the library · 1 citation · publishing 2025-2026

Papers

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Navigating ‘k-land’: a qualitative exploration of participants’ experiences of ketamine-assisted psychotherapy for methamphetamine use disorder

Frontiers in Psychiatry June 24, 2026 Kathryn Fletcher, Nadine Ezard, Krista J. Siefried et al.

Background Methamphetamine use disorder (MAUD) is associated with substantial psychiatric and physical morbidity, and current treatment options remain limited. Ketamine-assisted psychotherapy (KAP) has shown promise in substance use disorders, but little is known about how individuals experience and interpret this intervention, particularly in MAUD. Qualitative investigation may provide insight...

Exploring the perceived usefulness of integration support after naturalistic psychedelic experiences in people concerned about their substance use: A survey

Journal of Psychedelic Studies April 22, 2025 Sophie van der Helder, Krista J. Siefried, Liam Acheson et al. 1 citation

Improved outcomes for substance use disorders have been described following non-clinical (“naturalistic”) psychedelic use. This exploratory study aimed to describe the naturalistic psychedelic experiences of people with substance use concerns and their reported needs and perceived utility of psychosocial support following naturalistic psychedelic use to integrate experiences and achieve...