Trial reportJournal of psychopharmacology (Oxford, England)2024
Naturalistic psychedelic therapy: The role of relaxation and subjective drug effects in antidepressant response.
Trial report in Journal of psychopharmacology (Oxford, England), 2024. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 9 papers.
What it found
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The abstract states no effect estimate the extractor could read, or names no intervention and outcome on the map, so this paper lights no cell and moves no belief. It is still indexed, cited and linked below.
The trial behind it
Trials whose registry record cites this paper, or whose number appears in the abstract. A trial that started after this paper was published is citing it as background, not reporting it.
Neither the registry nor the abstract names a trial number. If this is a trial report, that itself is worth knowing.
Who cites it
9 citing papers in PubMed.
- Acute and post-acute neurobehavioral responses to lysergic acid diethylamide in healthy subjects: a randomized controlled study.Neuropsychopharmacology : official publication of the American College of Neuropsychopharmacology · 2026Trial
- Real-World Psilocybin Therapy for Treatment-Resistant Depression: A Retrospective Observational Study.The Lancet regional health. Europe · 2026Article
- The helioscope effect: A new framework for evaluating trauma-related memory processing in psychedelic experiences.Journal of psychopharmacology (Oxford, England) · 2026Article
- Psilocybin in Neuropsychiatric Disorders: Seeking Valuable Evidence in History, Pure Science, Clinical Trials and Real-World Data (RWD).Brain sciences · 2026Review
- Predictors of the Effectiveness of Psychedelics in Treating Depression-A Scoping Review.International journal of molecular sciences · 2026Article
- Traumatic Psychedelic Experiences.Current topics in behavioral neurosciences · 2026Review
- Psychedelic Therapy, Positive Emotional Experiences, and the Central Role of Self-Compassion.Research square · 2025Article
- Novel psychedelic interventions for post-traumatic stress disorder and their promise for precision medicine.Therapeutic advances in psychopharmacology · 2025Review
- Implementing psychedelic-assisted therapy: History and characteristics of the Swiss limited medical use program.Neuroscience applied · 2025Review
Corrections and comments
PubMed lists nothing against this paper. Absence here is not a guarantee, only a check that was made.
Authors and funding
5 authors.
Funding
No grant is acknowledged in the PubMed record.
Abstract
backgroundPsychedelic-assisted therapy (PAT) is permitted in Switzerland under its limited medical use program. Data from patients in this program represent a unique opportunity to analyze the real-world practice of PAT.
aimsThis study compared the subjective effects of lysergic acid diethylamide (LSD) and psilocybin between patients undergoing PAT and healthy volunteers. For the patients, it also investigated the relationship between antidepressant effects and six measures of acute drug effects.
methodsWe compared data on acute psychedelic drug effects between 28 PAT patients with data from 28 healthy participants who participated in a randomized, double-blind crossover trial. All participants received varying doses of psilocybin and LSD. Subjective effects were assessed on an hourly basis during the acute drug effects, and the Mystical Experience Questionnaire (MEQ) was completed retrospectively. For patients, depressive symptoms were assessed using the Montgomery-Åsberg Depression Rating Scale (MADRS).
resultsRatings of overall drug effect and mystical experience were similar across groups. Compared with healthy controls, patients reported lower ratings of ego dissolution. Patients showed a significant decrease in MADRS scores, and the greatest predictor of antidepressant outcome was relaxation during the PAT session. We did not observe a relationship between mystical-type experiences and antidepressant effects. Most patients experienced mild adverse effects which resolved within 48 h.
conclusionPAT reduced depressive symptoms in this heterogeneous patient group. Patients may experience more challenging psychedelic effects and reduced ego dissolution. Hourly assessment of drug effects may predict clinical outcomes better than retrospectively assessed mystical experiences, and the impact of relaxation during PAT should be investigated further.
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Registered trials
Read under generation 80e0d062 · epoch 390. Bibliography from PubMed, PubMed Central and OpenAlex; grants from NIH RePORTER; trial links from ClinicalTrials.gov; estimates, votes and beliefs from the Socratic graph.