Joe Rogan

Himself - Host

Ralph Abraham

Himself - Mathematician

Joel Bakst

Himself - Rabbi

Steven Barker

Himself - Pharmacologist

Cynthia Geist

Herself - DMT Study Nurse

Susan Blumenthal

Herself - DMT Volunteer

Patricio Dominguez

Himself - DMT Volunteer

Neal Goldsmith

Himself - Psychologist

Alex Grey

Himself - Artist

Roland Griffiths

Himself - Behavioral Pharmocologist

Charles Grob

Himself - Psychiatrist

Kathleen Harrison

Herself - Ethnobotanist

Terence McKenna

Himself - Writer & Cultural Commentator (archive footage)

Erik Davis

Himself - Writer

Graham Hancock

Himself - Writer

James Kent

Himself - Writer

Dennis J. McKenna

Himself - Ethnopharmacologist

Ralph Metzner

Himself - Psychologist

Christian Meuli

Himself - DMT Volunteer, Family Physician

Jeremy Narby

Himself - Anthropologist

Andrew Newberg

Himself - Radiologist

David Nichols

Himself - Medicinal Chemist

Daniel Pinchbeck

Himself - Writer

Douglas Rushkoff

Himself - Writer

Spiros Antonopoulos

Himself - DMT Volunteer, Yoga Student

Leanna Standish

Herself - Naturopathic Physician

Andrew Stone

Himself - DMT Volunteer, Software Developer

Rick Strassman

Himself - Psychiatrist

Robert Weisz

Himself - DMT Volunteer, Clinical Psychiatrist

Ricardo Amaringo

Himself

Alvin Joseph

Himself

Jon Levin

Himself

Aja Loux

Herself

José Pineda Vargas

Himself

Jordan Phillips

Herself

Jose Plaza

Himself

Mitch Schultz

Himself

Rob Velez

Himself

Fermin Quintuna

Himself

Ede Frecska

Himself - Psychopharmacologist