The Cosmic Serpent

Intelligence in Nature

The Fellowship of the River: A Medical Doctor's Exploration into Traditional Amazonian Plant Medicine

Breaking Open the Head: A Psychedelic Journey into the Heart of Contemporary Shamanism

The Shaman and Ayahuasca: Journeys to Sacred Realms

Listening to Ayahuasca: New Hope for Depression, Addiction, PTSD, and Anxiety

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

Supernatural: Meetings with the Ancient Teachers of Mankind

Ecstasy: The Complete Guide: A Comprehensive Look at the Risks and Benefits of MDMA