- 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
- Mitch Schultz
- Mitch Schultz
- Rick Strassman
- Mitch Schultz
- Rick Strassman
- Kerri Smeltzer
- Glenn Eanes
Joe Rogan interpreta a Himself - Host en la película.
Ralph Abraham interpreta a Himself - Mathematician en la película.
Joel Bakst interpreta a Himself - Rabbi en la película.
Steven Barker hace el papel de Himself - Pharmacologist.
Cynthia Geist interpreta a Herself - DMT Study Nurse en la película.
Susan Blumenthal interpreta a Herself - DMT Volunteer en la película.
Patricio Dominguez hace el papel de Himself - DMT Volunteer.
Neal Goldsmith interpreta a Himself - Psychologist en la película.
Alex Grey interpreta a Himself - Artist en la película.
Roland Griffiths interpreta a Himself - Behavioral Pharmocologist en la película.
Charles Grob hace el papel de Himself - Psychiatrist.
Kathleen Harrison hace el papel de Herself - Ethnobotanist.
Terence McKenna hace el papel de Himself - Writer & Cultural Commentator (archive footage).
Erik Davis hace el papel de Himself - Writer.
Graham Hancock interpreta a Himself - Writer en la película.
James Kent hace el papel de Himself - Writer.
Dennis J. McKenna interpreta a Himself - Ethnopharmacologist en la película.
Ralph Metzner interpreta a Himself - Psychologist en la película.
Christian Meuli interpreta a Himself - DMT Volunteer, Family Physician en la película.
Jeremy Narby hace el papel de Himself - Anthropologist.
Andrew Newberg hace el papel de Himself - Radiologist.
David Nichols hace el papel de Himself - Medicinal Chemist.
Daniel Pinchbeck interpreta a Himself - Writer en la película.
Douglas Rushkoff hace el papel de Himself - Writer.
Spiros Antonopoulos interpreta a Himself - DMT Volunteer, Yoga Student en la película.
Leanna Standish interpreta a Herself - Naturopathic Physician en la película.
Andrew Stone interpreta a Himself - DMT Volunteer, Software Developer en la película.
Rick Strassman hace el papel de Himself - Psychiatrist.
Robert Weisz hace el papel de Himself - DMT Volunteer, Clinical Psychiatrist.
Ricardo Amaringo interpreta a Himself en la película.
Alvin Joseph hace el papel de Himself.
Jon Levin interpreta a Himself en la película.
Aja Loux interpreta a Herself en la película.
José Pineda Vargas interpreta a Himself en la película.
Jordan Phillips interpreta a Herself en la película.
Jose Plaza interpreta a Himself en la película.
Mitch Schultz interpreta a Himself en la película.
Rob Velez interpreta a Himself en la película.
Fermin Quintuna interpreta a Himself en la película.
Ede Frecska interpreta a Himself - Psychopharmacologist en la película.
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