Excerpt from: http://www.biopark.org/ayahuasca.html
What is Ayahuasca?
The word "Ayahuasca" refers to a medicinal and magical drink incorporating two or more distinctive plant species capable of producing profound mental, physical and spiritual effects when brewed together and consumed in a ceremonial setting. One of these plants is always the giant woody liana vine called ayahuasca (Banisteriopsis caapi or other species). The other plant or plants combined with ayahuasca generally contain tryptamine alkaloids, most often dimethyltryptamine (DMT). The plants most often used are the leaves of chacruna (Psychotria viridis and other species) and oco yag