This protocol describes a systematic review and meta-analysis assessing the efficacy and safety of classic serotonergic psychedelics and related serotonergic ergoline or lysergamide compounds in cluster headache and migraine. The review will include clinical studies evaluating psilocybin, psilocin, LSD, LSA, DMT/ayahuasca, mescaline, BOL-148 / 2-bromo-LSD / bromolysergide, lisuride,...
AbstractThe “entropic brain” hypothesis holds that psychedelic and other ego-dissolving states correspondto an increase in the entropy or signal diversity of spontaneous brain activity. Motivated by afirst-person report of a combined serotonergic–dissociative state (LSD/DMT together with nitrousoxide, N2O), we asked a sharper question: when a 5-HT2A agonist and an NMDA antagonist acttogether,...
Psychedelics have re-emerged as promising therapeutics for neuropsychiatric disorders, including depression, anxiety, post-traumatic stress disorder, and substance use disorders. While their beneficial effects are largely attributed to serotonin 2A (5-HT2A) receptor activation, psychedelics exhibit substantial diversity in chemical structure, receptor binding kinetics, metabolism, and duration...
Zebrafish larvae are increasingly used in behavioural pharmacology because of their translational relevance and suitability for anxiety- and stress-related studies. However, it remains unclear whether commonly used behavioural assays and molecular stress markers provide convergent evidence of anxiolytic-like drug activity. This study therefore aimed not to validate a single predictive screening...
Classic serotonergic psychedelics-such as lysergic acid diethylamide (LSD), psilocybin, and N,N-dimethyltryptamine (DMT)-hold remarkable promise for treating neuropsychiatric disorders, yet their clinical translation is severely constrained by first-pass metabolism, erratic pharmacokinetics, unsuitable action profiles, and off-target peripheral serotonin effects. To overcome these barriers,...
Attention deficit and hyperactivity disorder (ADHD) is a prevalent neuropsychiatric disorder (Drechsler et al., 2020). Recently, psychedelics have become of interest regarding developing treatment options for ADHD. The aim of this systematic review is to find all studies from the APA PsychInfo and MEDLINE databases, where psychedelics have been used for ADHD and assess whether further clinical...
UPDATED 2026-06-09 Corrected dataset attribution from Timmermann et al. (2019) to Pallavicini et al. (2021) UPDATED 2026-01-21 Background: Psychedelic substances produce profound alterations in conscious experience, yet the neural mechanisms underlying phenomenal richness remain poorly understood. Static measures of neural integration and complexity have shown limited success in predicting...
Chronic pain is common, costly, and for many, remains inadequately treated by existing pharmacologic and non-pharmacologic approaches. In parallel with growing dissatisfaction with conventional therapies, classic serotonergic psychedelics, such as psilocybin, lysergic acid diethylamide (LSD), ayahuasca, N,N-dimethyltryptamine (DMT), and mescaline, administered alone or within...
Objective: Postpartum depression (PPD) is a debilitating mood disorder with peripartum onset. Current treatment options are limited in PPD. GH001 is a synthetic inhalation formulation of the psychoactive molecule mebufotenin (5-MeO-DMT). This trial investigated the preliminary efficacy and safety of GH001 in adult females with PPD. Methods: This phase 2a, proof-of-concept, open-label trial...
European PsychiatryJune 1, 2026A. M. Matas Ochoa, A. R. Quiroga, I. D. Sacristán
Introduction Psychedelics are hallucinogenic agents that are awakening scientific interest in recent years, especially in the field of mental health. Psychedelics induce non-ordinary states of consciousness and alterations in the emotions and in cognition and could be beneficial in treating some mental illness. Objectives The objective of the poster is to expand knowledge about emerging...