Banisteriopsis caapi is a vine native to the Amazon rainforest, primarily found in countries like Peru, Brazil, and Colombia. It is known for its psychoactive properties and is a key ingredient in the traditional brew called ayahuasca, used by indigenous cultures for spiritual and healing purposes. The vine contains harmala alkaloids, which act as monoamine oxidase inhibitors (MAOIs). This allows the effects of other psychoactive plants, such as Psychotria viridis, to be experienced when consumed together. Banisteriopsis caapi has gained attention in modern wellness and spiritual practices for its potential therapeutic benefits.