Abstract
Ayahusaca is a brew used in ritualistic ceremonies, prepared by decoction of Banisteriopsis caapi e a Psychotria viridis. The leaves of P. viridis possess the hallucinogenic compound DMT while the stem of B. caapi has beta-carboline alkaloids which are monoamine oxidase (MAO) inhibitors. As consequence, the DMT metabolism is inhibited in the gastrointestinal tract allowing the DMT absorpt…