From the original book's version in English dated 1994 : This review of the literature on the plants containing ayahuasca-type enzyme inhibitors, and on plants which contain DMT and related entheogenic tryptamines. The resulting tables of more than 60 plants in each category document Ott's contention that there are at least 4000 possible combinations of plants which can yield entheogenic potions like ayahuasca. There are the ayahuasca analogues of the book's title, and Ott's psychonautic experiments include several with such analogues, as well as with pharmahuasca - the pure ayahuasca alkaloids in ayahuasca capsules. A thorough index, 21 footnotes, nine tables and a detailed bibliography of 418 sources make this a valuable reference book, as well as Ott's personal logbook of psychonautic travel in the universe of the soul with ayahuasca.