Abstract
Ayahuasca is an indigenous hallucinogenic beverage used for shamanic and spiritual purposes, the use of which dates from the pre-columbian period in the Amazon basin region. This beverage is usually prepared by decoction of the Psicotria viridis and Banisteriopsis caapi plants. The ²-carboline alkaloids present in B. Caapi vine are responsible for inhibition of the enzyme monoamine oxidas…