Psilocybin has various therapeutic effects in mental and psychological disorders, including depression and mood disorders, obsessive-compulsive disorders, substance addiction and anxiety. Pharmacodynamic properties of psilocybin depend on doses used and time after administration. The psilocybin dose range varies depending on whether it is used therapeutically or for recreational purposes in...
Psilocybin, a naturally occurring psychedelic compound in magic mushrooms, shows promise as a novel intervention with a single administration inducing rapid and long-lasting antidepressant effects. However, there are limited studies on the optimal dosing required for the beneficial effects of psilocybin given its side effects. To address this gap, we investigated in Wistar rats whether a single...
This study was an open-label single-arm clinical trial evaluating the fidelity, feasibility, acceptability, and clinical signal of abbreviated mindfulness-based cognitive therapy (MBCT-brief) delivered either via telephone (MBCT-T) or by video conferencing (MBCT-V) for people with migraine and comorbid depressive symptoms. Migraine is commonly comorbid with elevated depressive symptoms. MBCT...
Objective: Up to 40% of adults report poor sleep quality, yet research investigating the role of nightmares on sleep quality is limited. This study aimed to characterise the prevalence of disturbing dreams and nightmares and their relationship to poor sleep quality. Method: 439 adults (310 females, Mage=44.9 years) completed an online survey investigating sleep, dreams, nightmares, and mental...
Introduction One of the main mechanisms of action of LSD in psychedelic-assisted psychotherapy (PAP) is the activation of 5HT2A receptors. This triggers a cascade of neurochemical processes with the release of neurotransmitters and neurohormonal substances. The release of oxytocin in this process is well documented in pre-clinical studies, with recent evidence in healthy subjects. We have no...
Abstract: This essay explores how the fundamental qualities of the psychedelic experience—including heightened affective intensity, the disorganization of the ego, and a sense of cosmic interconnectedness with the universe—offers a hopeful alternative to contemporary left-wing identitarianism. This is a widely popular political logic that associates the pursuit of social justice with the...
European PsychiatryApril 1, 2025Lars Arvastson, Evangelos Papanastasiou, Karin Schmid et al.
IntroductionCurrent ketamine-based therapies for treatment-resistant depression (TRD) can induce dissociative symptoms. A novel oral prolonged-release ketamine formulation (KET01) results in a lower and delayed peak concentration of ketamine, and a higher concentration of the metabolites norketamine and hydroxynorketamine than after intravenous administration. KET01 has limited dissociative...
Psychedelic-assisted therapy could transform treating psychiatric illness, but harms from exacerbating substance use disorder (SUD) among adults with psychiatric illness using psychedelics have not been studied. A cross-sectional survey in the US was used to test whether Drug Abuse Screening Test scores (DAST-10, validated instrument predicting SUD) were more severe when psychiatric illnesses...
This piece introduces the special issue of SAQ “Psychedelic Imaginaries,” which collates fresh and theoretically sophisticated humanist perspectives on the contemporary psychedelic renaissance. Recent interdisciplinary research into psychoactive substances like LSD (or “acid”), psilocybin (or “magic mushrooms”), and MDMA (or “ecstasy”) has repeatedly shown that the therapeutically beneficial...
Introduction Persons with schizophrenia are currently excluded from psychedelic-assisted therapy due to concerns about psychedelic-induced acute or persistent psychotic symptoms. However, meta-analytic evidence of the precise risk for psychedelic-induced de novo and exacerbation of psychosis in people with pre-existing psychotic disorders is lacking. Objectives We conducted an overview of...