"Fascinating and provocative. A remarkable exploration of the boundaries of science and consciousness itself."

– Rupert Sheldrake, author of The Presence of the Past

"Rick Strassman's pioneering research work with DMT, a natural psychedelic drug used by Amazonian Indians, raises fascinating questions about the neurochemical basis of experience and the feasibility of conducting human research with mind-altering drugs in a university medical center. Truly adventurous reading!"

– Andrew Weil, M.D., author of Spontaneous Healing

"This book is essential reading for anyone with an interest in the mind, philosophy, the nature of reality, and spirituality."

– Karl Jansen, M.D., Ph.D.

"DMT: The Spirit Molecule points the way beyond the present impasse of the reigning 'drug abuse' paradigm."

– Jonathan Ott, author of The Age of Entheogens and Hallucinogenic Plants of North America

"The most extensive scientific study of the mental and perceptual effects of a psychedelic drug since the 1960s."

– Ralph Metzner, Ph.D., author of Ayahuasca: Consciousness and the Spirits of Nature

"Strassman's important research contributes to a growing awareness that we inhabit a multi-dimensional universe."

– John Mack, MD Professor of Psychiatry, Harvard Medical School, author of Abduction and Passport to t

"Strassman raises vital questions about the origin of spiritual experiences and the nature of consciousness."

– Larry Dossey MD, author of Reinventing Medicine, and Healing Words; Executive Editor, Alternative Th

"DMT: The Spirit Molecule is a fascinating journey into the research of psychedelics. . . . The questions and possible explanations about the endogenous presence of DMT that he raises not only enlarge the discussion about psychedelics but also expand our understanding of the nature of consciousness."

– Jule Klotter, Townsend Letter for Doctors & Patients - July, 2001

"This book will be of profound interest to . . . anyone with a deep interest in the study of consciousness, visionary states and/or psycho-pharmacology."

– J. P. Harpignies, Lapis

"Strassman's psychonauts regularly found themselves hurtled into alien laboratories, high-tech nurseries, and Day-Glo hieroglyphic hypercubes."

– Erik Davis, The Village Voice

"DMT: the Spirit Molecule is an enriching journey into one scientist's courageous attempt to solve a bit more of the brain/mind/spirit mystery at the center of human existence."

– Vicki Ecker, UFO Magazine, December-January 2002

"What you will find is a thoughtful, well-written report about another of life's mysteries."

– James Dekorne, Fortean Times, November 2001

"Strassman's research was an important step, one that will potentially illuminate the path for future researchers and volunteers alike, and this book is a great contribution to the ongoing dialogue surrounding psychedelics."

– Scotto, Trip, Fall 2001

"This is probably the most thorough book on the psychedelic, DMT--its history, chemistry, uses (legal and illegal), and its effects. This is a very compelling, thoughtful book, written by a scrupulous scientist with the soul of a meditator."

– The Book Reader, Spring/Summer 2002

"The account of the project is an excellent inside view of human drug studies, especially those with psychedelics."

– Paul Von Ward, The AHP Perspective, June/July 2002

"This book is a highly readable, intriguing, provocative description of Rick Strassman's theories and research concerning the effects of DMT."

– Alissa Hirshfeld-Flores, M.A., LMFT, The American Journal of Psychiatry, August 2002

"Rick Strassman's experimentation with the psychoactive substance DMT is taking up where Leary's 1950/60's LSD experiments stopped."

– Rev. Dr. S. D'Montford, New Dawn, Jan-Feb 2006

"[Strassman's] account, written more for the layman than the specialist, is ground-breaking, and raises the interesting question as to what is truly a psychedelic experience."

– Peter Fenwick, The Scientific and Medical Network, Summer 2007

"Near-death experiences. Alien abductions. Lucid dreams. Even gods and goddesses. Try DMT for an explanation and it all holds together. It's brain chemistry. It's neuropharmacology. It's quite possibly other realms. Whatever it is, it's the new frontier, a closer examination of consciousness, and it's very, very exciting!"

– betaphilings.com, Dec 2008

"[Strassman] is a gifted writer and makes scientific jargon easy to read. The book gives very interesting examples of what the volunteers envisioned and how they felt throughout the experiences. . . . It is important for us as a society to look at legal, controlled, and supervised experimentation with psychoactive drugs with open minds, and with eventual scientific benefit in mind."

– Levi Cox, FLC Law and Society Science & Metaphysics Blog, Feb 2009

"Fascinating stuff! If this kind of thing interests you then pick up this book today."

– Loretta Nall, blog by former Alabama Gubernatorial Candidate, June 2009

"In the end, I felt the most important element of the book was the contextualization of the questions most important in psychedelic research. Strassman keenly recognizes and extrapolates the areas that appear to be most vital in the further study and theory of psychedelics."

– The Psychedelic Press UK, Sept 2009

“Highly readable, intriguing, provocative. . . . [An] intellectually courageous book. . . . Will be of great use both to researchers and clinicians, as well as to laypeople.”

– American Journal of Psychiatry, 2002

“A dazzling journey through psychedelic drug experimentation and a tantalizing peek into a new model of how the brain and mind work. Strassman’s research points toward a physiological basis for spirit and its interaction with the human body; his data suggests that our brain chemistry allows us access to other realms of existence just when we need it most, and his story recounts both the dangers and promises of entering this brave new world.”

– Bruce Greyson, Editor, Journal of Near-Death Studies

“ . . . Having the mind and the courage . . . you’re such an important part of the psychedelic history of this country because what you did is you legitimized a very important thing.”

– Joe Rogan, from a conversation with Rick Strassman, M.D., regarding his contributions to psychedelic