DMT: The Spirit Molecule: A Doctor's Revolutionary Research into the Biology of Near-Death and Mystical Experiences

My Altered States: A Doctor's Extraordinary Account of Trauma, Psychedelics, and Spiritual Growth

The Psychedelic Handbook: A Practical Guide to Psilocybin, LSD, Ketamine, MDMA, and Ayahuasca

Inner Paths to Outer Space: Journeys to Alien Worlds through Psychedelics and Other Spiritual Technologies