"Ayahuasca (usually pronounced /aɪjəˈwæskə/ or /ˈaɪjəˈwɑːskə/), also commonly called yagé (/jɑːheɪ/), is a hallucinogenic brew of various plant infusions prepared with the Banisteriopsis caapi vine. It is either mixed with the leaves of dimethyltryptamine (DMT)-containing species of shrubs from the genus Psychotria or with the leaves of the Justicia pectoralis plant which does not contain DMT. The brew, first described academically in the early 1950s by Harvard ethnobotanist Richard Evans Schultes, who found it employed for divinatory and healing purposes by the native peoples of Amazonian Peru, is known by a number of different names (see below).
It has been reported that some effects can be felt from consuming the caapi vine alone, but that DMT-containing plants (such as Psychotria) remain inactive when drunk as a brew without a source of monoamine oxidase inhibitor (MAOI) such as B. caapi. How indigenous peoples discovered the synergistic properties of the plants used in the ayahuasca brew remains unclear. Many indigenous Amazonian people say they received the instructions directly from plants and plant spirits." (Wikipedia)
"Ayahuasca is a powerfully psychedelic South American brew traditionally made from the B. caapi vine and admixtures such as P. viridis (and/or other DMT-containing plants). One of its primary effects is considered to be the vomiting (the purge) that accompanies the experience. The term ayahuasca is sometimes loosely used to mean any combination of an MAOI with DMT."
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