What does harmaline mean?
Harmaline is a specialized chemical noun for a naturally occurring beta-carboline alkaloid with psychoactive and monoamine-oxidizing effects. Chemically, it belongs to a family represented by compounds such as harmine and harmalol, and it occurs in plants including Syrian rue (Peganum harmala) and the ayahuasca vine (Banisteriopsis caapi). Harmaline inhibits monoamine oxidase A, an enzyme involved in breaking down dopamine, serotonin, and norepinephrine; this action can increase the availability of those neurotransmitters and contributes to the altered perception and mood associated with beta-carboline-rich preparations. The substance has consequently appeared in pharmacological research, toxicology, and discussions of traditional plant medicines. In ayahuasca chemistry, harmaline-type compounds are particularly important because they inhibit enzymes that would otherwise metabolize DMT. The word is primarily technical rather than part of ordinary English, so readers usually encounter it in a scientific, medical, or ethnobotanical context. Its close chemical relationship with harmine also makes careful spelling important, because the two compounds are related but not identical.
nounA naturally occurring beta-carboline alkaloid that inhibits monoamine oxidase A (MAO-A) and has psychoactive effects. It occurs in plants such as Syrian rue (Peganum harmala) and the ayahuasca vine (Banisteriopsis caapi) and has been studied in pharmacology and ethnobotany.
- A psychoactive beta-carboline alkaloid and reversible monoamine oxidase A inhibitor found in certain plants and studied in pharmacology, toxicology, and ethnobotany.
"Researchers analyzed the plant extract for harmaline and related beta-carboline alkaloids."
"The toxicology screen confirmed harmaline in the plant extract."
"Historians of ayahuasca discuss harmaline alongside DMT and other beta-carboline alkaloids."
Usually treated as a mass noun; the plural is uncommon and is used only for multiple distinct samples, formulations, or occurrences.
"The study compared harmalines obtained from different plant sources."
Ayahuasca's chemistry is a two-plant partnership: one plant supplies DMT, while harmaline-bearing plants inhibit enzymes that would otherwise help break it down.
Reviewed by Deb Chak, Editor. AI-assisted content curated by RJS Tech Solutions LLP.
Etymology of harmaline
Harmaline entered English through German Harmalin, a name formed for the alkaloid associated with Peganum harmala. The plant name harmala is a Latinized form of Arabic ḥarmal, referring to the Syrian rue plant. Related chemical names such as harman and harmalol were coined within the same naming family.
How harmaline is actually used
This is primarily a technical term used in chemistry, pharmacology, toxicology, and the study of traditional plant preparations. It names a specific compound and should not be used as a general label for all harmala alkaloids or for an entire ayahuasca preparation.
Easily confused with harmaline
Harmaline is the 3,4-dihydro counterpart of harmine, a closely related beta-carboline alkaloid that also occurs in plants used in ayahuasca preparations.