Ayahuasca is a brew that combines the Banisteriopsis Caapi vine and leaves from the Psychotria Viridis plant; the leaves activate the component in the vine that produces psychedelic effects. Ayahuasca contains N, N-dimethyltryptamine (DMT), which is the psychoactive component activated by monoamine oxidase inhibitors (MAOIs) in the brew. DMT is a hallucinogenic tryptamine drug that occurs naturally in many plants and animals.