Laura Ley, Friederike Holze, Denis Arikci, Anna M Becker, Isabelle Straumann, Aaron Klaiber, Fabio Coviello, Sophie Dierbach, Jan Thomann, Urs Duthaler, Dino Luethi, Nimmy Varghese, Anne Eckert, Matthias E Liechti
Mescaline, lysergic acid diethylamide (LSD), and psilocybin are classic serotonergic psychedelics. A valid, direct comparison of the effects of these substances is lacking. The main goal of the present study was to investigate potential pharmacological, physiological and phenomenological differences at psychoactive-equivalent doses of mescaline, LSD, and psilocybin. The present study used a randomized, double-blind, placebo-controlled, cross-over design to compare the acute subjective effects, autonomic effects, and pharmacokinetics of typically used, moderate to high doses of mescaline (300 and 500 mg), LSD (100 µg), and psilocybin (20 mg) in 32 healthy participants...
October 2023: Neuropsychopharmacology