Dimethyltryptamine/β-carbolines
Dimethyltryptamine/β-carbolines, also known as DMT/harmine/harmaline/THH, is a combination of dimethyltryptamine (DMT), a tryptamine serotonin receptor agonist and serotonergic psychedelic, and the β-carbolines and reversible inhibitors of MAO-A (RIMAs) harmine, harmaline, and tetrahydroharmine (THH), which is under development for potential medical use. It is a form of pharmahuasca (pharmaceutical ayahuasca), in which DMT is combined with synthetically produced monoamine oxidase inhibitors (MAOIs) as opposed to a plant-derived form such as Banisteriopsis caapi as in ayahuasca.
Source: Wikipedia — Dimethyltryptamine/β-carbolines (CC BY-SA 4.0)