The harmala alkaloids are potent short-acting reversible selective inhibitors of MAO-A. They have been described as both CNS-stimulants (Ott 1994 citing Beer 1939; Pendell 2006 citing The Merck Index) and CNS-depressants (Ott 1996 citing Naranjo 1967), however most commonly as CNS-depressants (Ott 1996). Tetrahydroharmine is a serotonin reuptake inhibitor, but is typically only present in trace amounts (Shulgin 2002). Harman has been shown to be a vasodilator and a hypotensive agent in animals (Shulgin 2002).
The quinazoline compounds vasicine, vasicinone, and deoxyvasicinone are uterotonics and possibly emmenagogues. (Ott 1996; Shulgin 2002; Mahmoudian 2002).
Peganum harmala has a long history of medicinal use in North Africa and the Middle East from Persia to India. It has been used there to ward off the evil eye (Pendell 2006), and as an abortifacient and emmenagogue (Mahmoudian 2002). Its use as an MAOI and as a psychoactive in underground drug culture appears to have begun in the 1980s; one of the early records of its use to orally activate DMT was in publications by Gracie & Zarkov (Gracie & Zarkov, 1985, 1986).
Effects
The effects of Peganum harmala are difficult to characterize (Ott 1994, 1996; Shulgin 1997; G&Z 1985). It has been described both as a stimulant and soporific, more often the latter (Ott 1994, 1996). Pendell describes the effects as "sedative, narcotic, mildly to moderately visual" (Pendell 2006). Depending upon dosage, common effects are nausea, dizziness, ataxia, oneirophrenia, tinnitus, hypertension, visual trails, and closed eye visuals (G&Z 1986; Ott 1994, 1996; Shulgin 1997).
Onset
For usage both as MAOI and as a psychoactive, effects usually begin within 30-60 minutes.
Duration
The MAOI effect lasts for 3-6 hours or longer. Psychoactive effects last 5-8 hours.
Risks
Nausea, vomiting, dizziness, sweating, body tremors, brachycardia, tachycardia, hypertension, and tinnitus are common when using Peganum harmala. Due to its MAOI properties, consumption of tyramine containing foods from 12 hours prior until 24 hours or longer after consuming Peganum harmala might precipitate a hypertensive crisis. Peganum harmala taken in conjunction with a serotonin reuptake inhibitor (SSRIs, which are common antidepressants) may precipitate serotonin syndrome, which may be life threatening.
A case report (Mahmoudian 2002) has demonstrated that a 150 g oral dose of Peganum harmala seeds can result in severe gastrointestinal distress including vomiting of blood, convulsions, and gastric ulcers. Vasicine and vasicinone are known uterotonics. Harman interacts directly with DNA and may be mutagenic (Shulgin 2002).
Contraindications
Do not operate heavy machinery. Do not drive. Individuals currently in the midst of emotional or psychological upheaval in their everyday lives should be careful about choosing to use psychoactives as they could possibly trigger even more difficulty. Individuals with a family history of schizophrenia or early onset mental illness should be extremely careful because strong psychoactives have been known to trigger latent psychological and mental problems. Syrian rue contains uterotonics and is probably better avoided by women who are pregnant.Addiction potential
Peganum harmala is not known to be either physically addicting nor likely to cause psychological dependance.