Ayahuasca is a very powerful hallucinogenic beverage used by both shamans in the Amazon basin and by new wave therapists, film directors such as Jan Kuonen (author of the film Blueberry) and young "intellectuals" of the bohemian bourgeoisie. Beyond the fashion phenomenon, we are in the presence of an extremely disturbing and mysterious psychotropic which has sparked as much debate as the Peyolt Castaneda style or LSD way.