← Research
Dec 2011 Dose-Response Study
Psilocybin Occasioned Mystical-Type Experiences: Immediate and Persisting Dose-Related Effects
Griffiths RR, Johnson MW, Richards WA, Richards BD, McCann U, Jesse R — Johns Hopkins University School of Medicine
Published in Psychopharmacology
Psilocybin Mystical Experience
18 volunteers received five ascending psilocybin doses (0 to 30mg/70kg) a month apart. Effects scaled consistently with dose; at the two highest doses, participants' self-rated mystical-type experiences held up at 14-month follow-up, consistent with how outside observers rated the same participants' behavior change.
Read the Full Paper at Psychopharmacology