According to Eckernäs et al. (2022), DMT is a psychedelic that can potentially cure several psychiatric disorders, although little is known about its pharmacokinetics and pharmacodynamic properties
[1][25]. Nevertheless, the lack of knowledge concerning DMT and its properties did not prevent people from the ancient past and modern times from experimenting with it at their discretion. Research data confirm that one of the more popular decoctions containing DMT is ayahuasca, consumed during so-called rites of passage in the Amazon since pre-Columbian times, whereby its use and sensations were monitored during these ceremonies by tribal chiefs who thought that these experiences were crucial in preparing young people for the roles assumed by adults
[2][26].
The base for making this decoction is
Banisteriopsis caapi (Spruce ex Griseb.) C.V.Morton, a plant that grows over vast South American terrains, and which can be found in the eastern part of Brazil, Ecuador, Bolivia, Peru, Colombia, and the Caribbean. It owes its Latin name to the missionary and botanist John Banister, who roamed the Amazon Forest in the 17th century. The psychoactive constituents to which the liana owes its appeal are the β-carboline alkaloids tetrahydroharmine, harmaline, and harmine. Taken in small doses, they exert an antidepressant effect. However, in larger doses, they induce a hallucinogenic experience. A hallucinogenic decoction is also produced when combined with DMT-containing plants, such as
Psychotria viridis Ruiz & Pav.
[3][27]. Ayahuasca accompanied indigenous people at nuptials, birthdays, and initiations in the Amazon region. At the same time, ayahuasca is used in natural (traditional or cultural) medicine for strengthening, aiding concentration and performance, and cleansing the body of accumulated toxins. Among indigenous Amazonian peoples, any circumstances during which it is permissible to use the plant for medicinal and ceremonial purposes are regulated by internal tribal arrangements
[4][28]. Both the preparation and serving of the brew are only allowed to curanderos (local healers—shamans)
[3][27].
Some researchers suggest that the DMT-containing secretion of the toad
Incilius alvarius may also have been used in the southwestern U.S. and in northern Mexico. It has been established that a single toad can produce doses sufficient to achieve psychedelic sensations. Admittedly, the doses are toxic when ingested orally, but burning the collected secretions followed by inhalation produces potent psychedelic results
[5][29].
In Western culture, it is possible to identify several important dates relating to the modern history of DMT. According to Steven Barker, such a date is 1931, when Canadian chemist Richard Manske conducted the first synthesis of DMT in a laboratory
[6][4]. Barker also pointed out that the occurrence of DMT in plants was discovered in 1946 by microbiologist Oswaldo Gonçalves de Lima, while the psychedelic properties of DMT were described in 1956 by Hungarian chemist and psychiatrist Stephen Szár, who extracted DMT from the Mimosa plant and conducted an experiment on himself by taking the extract via intramuscular injection
[6][4]. One can also find slightly different dates for these discoveries in the scientific literature. According to Anna Ermakova et al., the first synthesis of 5-MeO-DMT took place in 1936, while the first isolation of the psychedelic from the
Dictyoloma incanescens DC. plant of the
Rutaceae family took place in 1959, and in subsequent years, it was identified in some fungi, secretions of the glands of the desert toads, and in mammals
[7][12]. Despite the slight discrepancies in time, it must be acknowledged that these events bridge the gap between the profane and the sacred and between modern science and the cultural–religious use of many DMT-containing plants
[6][4].
The use of DMT for ritual purposes is also observed in modern times. Indigenous South Americans have been using plants containing 5-MeO-DMT for thousands of years
[8][30], and they used snuff made from
Anadenanthera peregrina (L.) Speg. beans
[7][12]. In Brazil, until modern times, there are several religious communities for which ayahuasca decoction is a sacrament in public rituals. Congregations celebrating ayahuasca are also found in Germany, Australia, Canada, France, the Netherlands, Japan, Spain, and the United States
[9][10][31,32]. In the 21st century, ayahuasca healing sessions conducted by globetrotting curanderos are increasingly common and available to almost anyone interested
[3][27]. As for the use of DMT-containing secretions of
Incilius alvarius toads, researchers could not find definite historical evidence of its indigenous use, and it could be a relatively recent phenomenon
[7][12].