"Shamanic" practices used as healing or personal development rituals are becoming increasingly popular among the Western public. The emergence of this "tourism" lead to the development of "shamanic centers" in the Peruvian Amazon. Founded in 1992 by a French doctor, Takiwasi is both an addiction treatment clinic and one of the main shamanic center in the area. The institution has developed a therapeutic device characterized by the appropriation of some elements of indigenous pharmacopeia, such as emetic plants and ayahuasca. Few hundred people are coming to Takiwasi each year to participate in practices including the ritual use of purgative plants, ayahuasca and retreats in the jungle. The purpose of those ‘seminars’ is to allow a physical depuration, psychotherapy and ‘spiritual awakening’. We will show here how the transfer of that pharmacopoeia in the Takiwasi context has been accompanied by a taxonomic transformation based on an original etiological and therapeutical theory.