Pharmacotheon: Entheogenic Drugs, Their Plant Sources and History

Jonathan Ott is one of the researchers who coined the term entheogen, and this self-published Natural Products Company book is his detailed scholarly treatment of entheogenic plants, covering their chemistry, traditional preparation and history across many cultures. Its strength is genuinely careful, heavily referenced scholarship that specialists in the field continue to cite for its chemical and historical detail. Its limit is the reason for its tier two placement, Ott is an outspoken advocate for entheogen use rather than a disinterested academic, and the book is self-published rather than issued by an academic press with independent peer review, so a claim resting on Ott's own interpretive framing should be checked against an independent scholarly source.