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Ayahuasca

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This article is about the psychoactive brew. For the vine, see Banisteriopsis caapi. For other uses, see Ayahuasca (disambiguation).
Ayahuasca
A pot containing ingredients for the ayahuasca beverage in Ecuador
Source plant(s)
Part(s) of plant
Geographic originSouth America
Active ingredients
UsesPolysubstance indigenous drink

Ayahuasca[note 1] is a South American psychoactive beverage, traditionally used by Indigenous cultures and folk healers in the Amazon and Orinoco basins for spiritual ceremonies, divination, and healing a variety of psychosomatic complaints.[1]

Originally restricted to areas of Peru, Brazil, Colombia and Ecuador, in the middle of the 20th century it became widespread in Brazil in the context of the appearance of syncretic religions that use ayahuasca as a sacrament, like Santo Daime, União do Vegetal and Barquinha, which blend elements of Amazonian Shamanism, Christianity, Kardecist Spiritism, and African-Brazilian religions such as Umbanda, Candomblé and Tambor de Mina, later expanding to several countries across all continents, notably the United States and Western Europe, and, more incipiently, in Eastern Europe, South Africa, Australia, and Japan.[2][3][4]

More recently, new phenomena regarding ayahuasca use have evolved and moved to urban centers in North America and Europe, with the emergence of neoshamanic hybrid rituals and spiritual and recreational drug tourism.[5][6] Also, anecdotal evidence, studies conducted among ayahuasca consumers and clinical trials suggest that ayahuasca has therapeutic potential, especially for the treatment of substance dependence, anxiety, and mood disorders.[7][8][9][10][11] Thus, currently, despite continuing to be used in a traditional way, ayahuasca is also consumed recreationally worldwide, and is considered as a potential future treatment in modern medicine.[12] Ayahuasca often causes nausea and vomiting and has a number of rarer more serious possible side effects including breathing difficulties and seizure; it may cause psychosis in those predisposed to the condition.[13]

Ayahuasca is a hallucinogen commonly made by the prolonged decoction of the stems of the Banisteriopsis caapi vine and the leaves of the Psychotria viridis shrub, although hundreds of species are used in addition or substitution (See "Preparation" below).[14] P. viridis contains N,N-Dimethyltryptamine (DMT), a highly psychedelic substance. Although orally inactive, B. caapi is rich with harmala alkaloids, such as harmine, harmaline and tetrahydroharmine (THH), which can act as monoamine oxidase inhibitors (MAOi). This halts the liver and gastrointestinal metabolism of DMT, allowing it to reach the systemic circulation and the brain, where it activates 5-HT1A/2A/2C receptors in frontal and paralimbic areas.[15][16]

Etymology

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Ayahuasca is the hispanicized spelling (i.e., spelled according to Spanish orthography) of a word that originates from the Quechuan languages, which are spoken in the Andean states of Ecuador, Bolivia, Peru, and Colombia. Speakers of Quechuan languages who use modern Quechuan orthography spell it ayawaska.[17] The word refers both to the liana Banisteriopsis caapi, and to the brew prepared from it. In the Quechua languages, aya means "spirit, soul", or "corpse, dead body", and waska means "rope" or "woody vine", "liana".[18] The word ayahuasca has been variously translated as "liana of the soul", "liana of the dead", and "spirit liana".[19] In the cosmovision of its users, the ayahuasca is the vine that allows the spirit to wander detached from the body, entering the spiritual world, otherwise forbidden for the alive.

Common Names

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Although ayahuasca is the most widely used term in Peru, Bolivia, Ecuador and Brazil, the brew is known by many names throughout northern South America:

Other names in the Western world

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In the last decades, two new important terminologies emerged. Both are commonly used in the Western world in neoshamanic, recreative or pharmaceutical contexts to address ayahuasca-like substances created without the traditional botanical species, due to it being expensive and/or hard to find in these countries. These concepts are surrounded by some controversies involving ethnobotany, patents, commodification and biopiracy:[38][39][40]

  • Anahuasca (ayahuasca analogues). A term usually used to refer to the ayahuasca produced with other plant species as sources of DMT (e.g., Mimosa hostilis) or β-carbolines (e.g., Peganum harmala).[41]
  • Pharmahuasca (pharmaceutical ayahuasca). This indicates the pills produced from freebase DMT, synthetic harmaline, MAOI medications (such as moclobemide) and other isolated or purified compounds or extracts.[42]

History

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Origins

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Archaeological evidence of the use of psychoactive plants in northeastern Amazon dates back to 1500–2000 B.C. Anthropomorphic figurines, snuffing trays and pottery vessels, often adorned with mythological figures and sacred animals, offer a glimpse of the pre-Columbian culture regarding use of the sacred plants, their preparation and ritual consumption [citar naranjo 86].[citation needed] Although several botanical specimens (like tobacco, coca and Anadenanthera spp.) were identified among these objects,[43] there is no unequivocal evidence of this date referring directly to ayahuasca. Banisteriopsis caapi use is suggested from a pouch containing carved snuffing trays, bone spatulas and other paraphernalia with traces of harmine and DMT, discovered in a cave in southwestern Bolivia in 2008,[44] and chemical traces of harmine in the hair of two mummies found in northern Chile.[45] Both cases are linked to Tiwanaku people, circa 900 CE. There are several reports of oral and nasal use of Anadenanthera spp. (rich in bufotenin) ritualistically and therapeutically during labor and infancy, and researchers suggest that addition of Banisteriopsis spp. to catalyze its psychoactivity emerged later, due to contact between different groups of Amazon and Altiplano.[46]

Despite claims by numerous anthropologists and ethnologists, such as Plutarco Naranjo,[47] regarding the millennial usage of ayahuasca, compelling evidence substantiating its pre-Columbian consumption is yet to be firmly established. As articulated by Dennis McKenna:[43]

"No one can say for certain where the practice may have originated, and about all that can be stated with certainty is that is already spread among numerous indigenous tribes throughout Amazon basin by the time ayahuasca came to the attention of Western ethnographers in the mid-nineteenth century"

The first western references of the ayahuasca beverage dates back to seventeenth century, during the European colonization of the Americas. The earlier report is a letter from Vincente de Valverde to the Holy Office of the Inquisition.[48] Jose Chantre y Herrera still in the seventeenth century, provided the first detailed description of a "devilish potion" cooked from bitter herbs and lianas (called ayaguasca) and its rituals:[49]

"[...] In other nations, they set aside an entire night for divination. For this purpose, they select the most capable house in the vicinity because many people are expected to attend the event. The diviner hangs his bed in the middle and places an infernal potion, known as ayahuasca, by his side, which is particularly effective at altering one's senses. They prepare a brew from bitter vines or herbs, which, when boiled sufficiently, must become quite potent. Since it's so strong at altering one's judgment in small quantities, the precaution is not excessive, and it fits into two small pots. The witch doctor drinks a very small amount each time and knows well how many times he can sample the brew without losing his senses to properly conduct the ritual and lead the choir".

Another report produced in 1737 by the missionary Pablo Maroni, describes the use of a psychoactive liana called ayahuasca for divination in the Napo River, Ecuador:[50]

Ayahuasca cooking

"For divination, they use a beverage, some of white datura flowers, which they also call Campana due to its shape, and others from a vine commonly known as Ayahuasca, both highly effective at numbing the senses and even at taking one's life if taken in excess. They also occasionally use these substances for the treatment of common illnesses, especially headaches. So, the person who wants to divine drinks the chosen substance with certain rituals, and while deprived of their senses from the mouth downwards, to prevent the strength of the plant from harming them, they remain in this state for many hours and sometimes even two or three days until the effects run their course, and the intoxication subsides. After this, they reflect on what their imagination revealed, which occasionally remains with them for delirium. This is what they consider accomplished and propagate as an oracle."

Latter reports were produced by Juan Magnin in 1740, describing ayahuasca use as a medicinal plant by the Jivaroan peoples (called ayahuessa)[51] and by Franz Xaver Veigl in 1768, that reports about several "dangerous plants", including a bitter liana used for precognition and sorcery.[52] All these reports were written in context of Jesuit missions in South America, specially the Mainas missions,[53] in Latin and sent only to Rome, so their audience wasn't very large and they were promptly lost in the archives. For this reason, ayahuasca didn't receive interest for the entire subsequent century.[54]

Early academic research

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In academic discourse, the initial mention of ayahuasca dates back to Manuel Villavicencio's 1848 book, "Geografía de la República del Ecuador." This work vividly delineates the employment and rituals involving ayahuasca by the Jivaro people.[55] Concurrently, Richard Spruce embarked on an Amazonian expedition in 1852 to collect and classify previously unidentified botanical specimens. During this journey, Spruce encountered and documented Banisteriopsis caapi (at time named Banisteria caapi) and observed an ayahuasca ceremony among the Tucano community situated along the Vaupés River. Subsequently, Spruce uncovered the usage and cultivation of B. caapi among various indigenous groups dispersed across the Amazon and Orinoco basins, like the Guahibo and Sápara. These multifarious encounters, together with Spruce's personal accounts of subjective ayahuasca experiences, were collated in his 1873 work, "Notes of a Botanist On The Amazon and Andes.".[56] By the end of the century, other explorers and anthropologists contributed more extensive documentation concerning ayahuasca, notably the Theodor Koch-Grünberg's documents about Tucano and Arecuna's rituals and ceremonies,[57][58] Stradelli's first-hand reports of ayahuasca rituals and mythology along the Jurupari and Vaupés[59] and Alfred Simson's first description of admixture of several ingredients in the making of ayahuasca in Putumayo region, published in 1886.[60]

In 1905, Rafael Zerda Bayón named the active extract of ayahuasca as telepathine, a name latter used by the Colombian chemist Guillermo Fischer Cárdenas when he isolated the substance in 1932.[61] Contemporaneously, Lewin[62] and Gunn[63] were independently studying the properties of the banisterine, extracted of the B. caapi, and its effects on animal models.[64] Further clinical trials were being conducted, exploring the effects of banisterine on Parkinson's disease.[65][66] Later it was found that both telepathine and banisterine are the same substance, identical to a chemical already isolated from Peganum harmala and given the name Harmine.[67]

Shamanism, mestizos and vegetalistas

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Researchers like Peter Gow and Brabec de Mori argue that ayahuasca use indeed developed alongside the Jesuit missions after the 17th century. By examining the ícaros (ayahuasca-related healing chants), they found that the chants are always sung in Quechua (a lingua franca along the Jesuit and Franciscan missions in the region), no matter the linguistic background of the group, with similar language structures between different ícaros that are markedly different from other indigenous songs. Moreover, often the cosmology of ayahuasca often mirrors the Catholicism, with particular similarities in the belief that ayahuasca is thought to be the body of ayahuascamama that is imbibed as part of the ritual, like wine and bread are taken as being the body and blood of Jesus Christ during Christian Eucharist. Brabec de Mori called this “Christian camouflage” and suggested that rather than being a way for disguising the ayahuasca ritual, it suggests that practice evolved entirely within these contexts.[68][53]

Indeed, the colonial processes in Western Amazon are intrinsically related with the development of ayahuasca use in the last three centuries, as it promoted a deep reshape in traditional ways of life in the region. Many indigenous groups moved into the Missions, seeking protection from death and slavery promoted by the Bandeiras, inter-tribal violence, starvation and disease (smallpox). This movement resulted in an intense cultural exchange and resulted in the formation of mestizos (in Spanish) or caboclos (in Portuguese), a social category formed by people with mixture of European and native ancestry, who were an important part of the economy and culture of the region.[69] According to Peter Gow, the ayahuasca shamanism (the use of ayahuasca by a trained shaman to diagnose and cure illnesses) was developed by these mestizos in the processes of colonial transformation.[68] The Amazon rubber cycles (1879–1912 and 1945–1945) sped up these transformations, due to slavery, genocide and brutality against indigenous populations and large migratory movements, specially from the Brazilian Northeast Region as a workforce for the rubber plantations. The mestizo practices became deeply intertwined with the culture of rubber workers, called caucheros (in Spanish) or seringueiros (in Portuguese). Ayahuasca use with therapeutic goals is the main result of this Trans-cultural diffusion, with some practitioners pointing the caucheros as the main responsible for using ayahuasca to cure all sort of ailments of the body, mind and soul, with even some regions using the term Yerba de Cauchero ("rubber-worker herb"). As a result, the ayahuasca shamans in urban areas and mestizo settlements, specially in the regions of Iquitos and Pucallpa (in Peru), became the vegetalistas, folk healers who are said to gain all their knowledge from the plants and the spirits bound to it.[70]

So the vegetalist movement was a heterogeneous mixture of Western Amazon (mestizo shamanic practices and cauchero culture) and Andean elements (shaped by other migratory movements, like those originated from Cuzco through Urubamba Valley and from western Ecuador), influenced by Christian aspects derived from the Jesuit missions, as reflected by the mythology, rituals and moral codes related to vegetalista ayahuasca use.[70]

Ayahuasca religions

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Although mestizo, vegetalista and indigenous ayahuasca use was part a longer tradition, these several configurations of mestizo vegetalismo were not isolated phenomena. In the end of the nineteenth century several messianic/millennialist cults sparkled across semi-urban areas across the entire Amazon region, merging different elements of indigenous and mestizofolk culture with Catholicism, Spiritism and Protestantism.[70][71] In this context, the use of ayahuasca will take form of urban, organized non-indigenous religions in outskirts of main cities of northwest of Brazil, (along the basins of Madeira, Juruá and Purus River)[72] within the cauchero/seringueiro cultural complex, resignifying and adapting both the vegetalista and mestizo shamanism to new urban formations, unifying essential elements to building a cosmology for the new emerging cult/faith, merging with elements of folk Catholicism, African-Brazilian religions and Kardecist spiritism. These new cults arise from charismatic leaderships, often messianic and prophetic, who came from rural areas after migration movements, sometimes called ayahuasqueiros, in semi-urban communities across the bordes of Brazil, Bolívia and Peru (a region that will later form the state of Acre).[69] This new configuration os these belief systems is refereed by Goulart as  tradição religiosa ayahuasqueira urbana amazônica ("urban-amazonian ayahuasqueiro religious tradition")[73] or campo ayahuasqueiro brasileiro ("brazilian ayahuasqueiro field") by Labate,[74] emerging as three main structured religions, the Santo Daime and Barquinha, in Rio Branco and the União do Vegetal (UDV) in Porto Velho, three denominations that, notwithstanding shared characteristics besides ayahuasca utilization, have several particularities regarding its practices, conceptions and processes building social legitimacy and relationships with Brazilian government, media, science and other society stances.[75] Since the latter half of twentieth century, the ayahuasca religious expanded to other parts of Brazil and several countries in the world, notably in the West.[76]

Modern use

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Beat writer William S. Burroughs read a paper by Richard Evans Schultes on the subject and while traveling through South America in the early 1950s sought out ayahuasca in the hopes that it could relieve or cure opiate addiction (see The Yage Letters). Ayahuasca became more widely known when the McKenna brothers published their experience in the Amazon in True Hallucinations. Dennis McKenna later studied pharmacology, botany, and chemistry of ayahuasca and oo-koo-he, which became the subject of his master's thesis.

Richard Evans Schultes allowed Claudio Naranjo to make a special journey by canoe up the Amazon River to study ayahuasca with the South American Indians. He brought back samples of the beverage and published the first scientific description of the effects of its active alkaloids.[77]

In recent years, the brew has been popularized by Wade Davis (One River), English novelist Martin Goodman in I Was Carlos Castaneda,[78] Chilean novelist Isabel Allende,[79] writer Kira Salak,[80][81] author Jeremy Narby (The Cosmic Serpent), author Jay Griffiths (Wild: An Elemental Journey), American novelist Steven Peck, radio personality Robin Quivers,[82][unreliable source?], writer Paul Theroux (Figures in a Landscape: People and Places),[83] and NFL quarterback Aaron Rodgers.[84]

Preparation

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Ayahuasca being prepared in the Napo region of Ecuador

Sections of Banisteriopsis caapi vine are macerated and boiled alone or with leaves from any of a number of other plants, including Psychotria viridis (chacruna), Diplopterys cabrerana (also known as chaliponga and chacropanga),[85] and Mimosa tenuiflora, among other ingredients which can vary greatly from one shaman to the next. The resulting brew may contain the powerful psychedelic drug dimethyltryptamine and monoamine oxidase inhibiting harmala alkaloids, which are necessary to make the DMT orally active by allowing it (DMT) to be processed by the liver. The traditional making of ayahuasca follows a ritual process that requires the user to pick the lower Chacruna leaf at sunrise, then say a prayer. The vine must be "cleaned meticulously with wooden spoons"[86] and pounded "with wooden mallets until it's fibre."[86]

Brews can also be made with plants that do not contain DMT, Psychotria viridis being replaced by plants such as Justicia pectoralis, Brugmansia, or sacred tobacco, also known as mapacho (Nicotiana rustica), or sometimes left out with no replacement. This brew varies radically from one batch to the next, both in potency and psychoactive effect, based mainly on the skill of the shaman or brewer, as well as other admixtures sometimes added and the intent of the ceremony. Natural variations in plant alkaloid content and profiles also affect the final concentration of alkaloids in the brew, and the physical act of cooking may also serve to modify the alkaloid profile of harmala alkaloids.[87][88]

The actual preparation of the brew takes several hours, often taking place over the course of more than one day. After adding the plant material, each separately at this stage, to a large pot of water, it is boiled until the water is reduced by half in volume. The individual brews are then added together and brewed until reduced significantly. This combined brew is what is taken by participants in ayahuasca ceremonies.

Traditional use

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Ayahuasca cooking in the Loreto region of Peru
Ayahuasca being prepared in Ecuador

The uses of ayahuasca in traditional societies in South America vary greatly.[89] Some cultures do use it for shamanic purposes, but in other cases, it is consumed socially among friends, in order to learn more about the natural environment, and even in order to visit friends and family who are far away.[89]

Nonetheless, people who work with ayahuasca in non-traditional contexts often align themselves with the philosophies and cosmologies associated with ayahuasca shamanism, as practiced among Indigenous peoples like the Urarina of the Peruvian Amazon.[90][89] Dietary taboos are often associated with the use of ayahuasca,[91] although these seem to be specific to the culture around Iquitos, Peru, a major center of ayahuasca tourism.[89] Ayahuasca retreats or healing centers can also be found in the Sacred Valley of Peru, in areas such as Cusco and Urubamba, where similar dietary preparations can be observed. These retreats often employ members of the Shipibo-Konibo tribe, an indigenous community native to the Peruvian Amazon.[citation needed]

In the rainforest, these taboos tend towards the purification of one's self—abstaining from spicy and heavily seasoned foods, excess fat, salt, caffeine, acidic foods (such as citrus) and sex before, after, or during a ceremony. A diet low in foods containing tyramine has been recommended, as the speculative interaction of tyramine and MAOIs could lead to a hypertensive crisis; however, evidence indicates that harmala alkaloids act only on MAO-A, in a reversible way similar to moclobemide (an antidepressant that does not require dietary restrictions). Dietary restrictions are not used by the highly urban Brazilian ayahuasca church União do Vegetal, suggesting the risk is much lower than perceived and probably non-existent.[91]

Ceremony and the role of shamans

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Shamans, curanderos and experienced users of ayahuasca advise against consuming ayahuasca when not in the presence of one or several well-trained shamans.[92]

In some areas, there are purported brujos (Spanish for "witches") who masquerade as real shamans and who entice tourists to drink ayahuasca in their presence. Shamans believe one of the purposes for this is to steal one's energy and/or power, of which they believe every person has a limited stockpile.[92]

The shamans lead the ceremonial consumption of the ayahuasca beverage,[93] in a rite that typically takes place over the entire night. During the ceremony, the effect of the drink lasts for hours. Prior to the ceremony, participants are instructed to abstain from spicy foods, red meat and sex.[94] The ceremony is usually accompanied with purging which include vomiting and diarrhea, which is believed to release built-up emotions and negative energy.[95]

Shipibo-Konibo and their relation to Ayahuasca

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It is believed that the Shipibo-Konibo are among the earliest practitioners of Ayahuasca ceremonies, with their connection to the brew and ceremonies surrounding it dating back centuries, perhaps a millennium.[96]

Some members of the Shipibo community have taken to the media to express their views on Ayahuasca entering the mainstream, with some calling it "the commercialization of ayahuasca." Some of them have even expressed their worry regarding the increased popularity, saying "the contemporary 'ayahuasca ceremony' may be understood as a substitute for former cosmogonical rituals that are nowadays not performed anymore."[97]

Icaros

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The Shipibo have their own language, called Shipibo, a Panoan language spoken by approximately 26,000 people in Peru and Brazil. This language is commonly sung by the shaman in the form of a chant, called an Icaro, during the Ayahuasca ritual as a way to establish a "balance of energy" during the ritual to help protect and guide the user during their experience.[98]

Traditional brew

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B. caapi inflorescence

Traditional ayahuasca brews are usually made with Banisteriopsis caapi as an MAOI, while dimethyltryptamine sources and other admixtures vary from region to region. There are several varieties of caapi, often known as different "colors", with varying effects, potencies, and uses.

DMT admixtures:

Other common admixtures:

Common admixtures with their associated ceremonial values and spirits:

  • Ayahuma[99] bark: Cannon Ball tree. Provides protection and is used in healing susto (soul loss from spiritual fright or trauma).
  • Capirona[99] bark: Provides cleansing, balance and protection. It is noted for its smooth bark, white flowers, and hard wood.
  • Chullachaki caspi[99] bark (Brysonima christianeae): Provides cleansing to the physical body. Used to transcend physical body ailments.
  • Lopuna blanca bark: Provides protection.
  • Punga amarilla bark: Yellow Punga. Provides protection. Used to pull or draw out negative spirits or energies.
  • Remo caspi[99] bark: Oar Tree. Used to move dense or dark energies.
  • Wyra (huaira) caspi[99] bark (Cedrelinga catanaeformis): Air Tree. Used to create purging, transcend gastro/intestinal ailments, calm the mind, and bring tranquility.
  • Shiwawaku bark: Brings purple medicine to the ceremony.
  • Uchu sanango: Head of the sanango plants.
  • Huacapurana: Giant tree of the Amazon with very hard bark.
  • Bobinsana (Calliandra angustifolia): Mermaid Spirit. Provides major heart chakra opening, healing of emotions and relationships.

Non-traditional usage

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In the late 20th century, the practice of ayahuasca drinking began spreading to Europe, North America and elsewhere.[102] The first ayahuasca churches, affiliated with the Brazilian Santo Daime, were established in the Netherlands. A legal case was filed against two of the Church's leaders, Hans Bogers (one of the original founders of the Dutch Santo Daime community) and Geraldine Fijneman (the head of the Amsterdam Santo Daime community). Bogers and Fijneman were charged with distributing a controlled substance (DMT); however, the prosecution was unable to prove that the use of ayahuasca by members of the Santo Daime constituted a sufficient threat to public health and order such that it warranted denying their rights to religious freedom under ECHR Article 9. The 2001 verdict of the Amsterdam district court is an important precedent. Since then groups that are not affiliated to the Santo Daime have used ayahuasca, and a number of different "styles" have been developed, including non-religious approaches.[103]

Ayahuasca analogs

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See also: Pharmahuasca
Syrian rue seeds can be used to provide an MAOI.

In modern Europe and North America, ayahuasca analogs are often prepared using non-traditional plants which contain the same alkaloids. For example, seeds of the Syrian rue plant can be used as a substitute for the ayahuasca vine, and the DMT-rich Mimosa hostilis is used in place of chacruna. Australia has several indigenous plants which are popular among modern ayahuasqueros there, such as various DMT-rich species of Acacia.

The name "ayahuasca" specifically refers to a botanical decoction that contains Banisteriopsis caapi. A synthetic version, known as pharmahuasca, is a combination of an appropriate MAOI and typically DMT. In this usage, the DMT is generally considered the main psychoactive active ingredient, while the MAOI merely preserves the psychoactivity of orally ingested DMT, which would otherwise be destroyed in the gut before it could be absorbed in the body. In contrast, traditionally among Amazonian tribes, the B. Caapi vine is considered to be the "spirit" of ayahuasca, the gatekeeper, and guide to the otherworldly realms.[104]

Brews similar to ayahuasca may be prepared using several plants not traditionally used in South America:

DMT admixtures:

MAOI admixtures:

Effects

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See also: DMT effects

Adverse effects

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Ingesting Ayahuasca can cause nausea, vomiting and diarrhea in the short term. Other short-term side effects include increased blood pressure and tachycardia. Rarer side effects include dyspnea, seizures and serotonin syndrome. Ayahuasca is suspected of triggering psychosis in people with a predisposition to the condition, and there is a lack of safety information for Ayahuasca's possible effects on pregnancy and breastfeeding.[13]

Psychological effects

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People who have consumed ayahuasca report having mystical experiences and spiritual revelations regarding their purpose on earth, the true nature of the universe, and deep insight into how to be the best person they possibly can.[106] Many people also report therapeutic effects, especially around depression and personal traumas.[107]

This is viewed by many as a spiritual awakening and what is often described as a near-death experience or rebirth.[92]: 67–70  It is often reported that individuals feel they gain access to higher spiritual dimensions and make contact with various spiritual or extra-dimensional beings who can act as guides or healers.[108]

The experiences that people have while under the influence of ayahuasca are also culturally influenced.[89] Westerners typically describe experiences with psychological terms like "ego death" and understand the hallucinations as repressed memories or metaphors of mental states.[89] However, at least in Iquitos, Peru (a center of ayahuasca ceremonies), those from the area describe the experiences more in terms of the actions in the body and understand the visions as reflections of their environment, sometimes including the person who they believe caused their illness, as well as interactions with spirits.[89]

Potential therapeutic effects

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See also: Psychedelic therapy

There are potential antidepressant and anxiolytic effects of ayahuasca.[109][110][111]

Ayahuasca has also been studied for the treatment of addictions and shown to be effective, with lower Addiction Severity Index scores seen in users of ayahuasca compared to controls.[112][113][114][111] Ayahuasca users have also been seen to consume less alcohol.[115]

Pharmacology

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Main articles: N,N-Dimethyltryptamine and Monoamine oxidase inhibitor

Harmala alkaloids

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Main article: Harmala alkaloid
Molecular structure of harmine
Molecular structure of harmaline
Molecular structure of tetrahydroharmine

Harmala alkaloids are MAO-inhibiting beta-carbolines. The three most studied harmala alkaloids in the B. caapi vine are harmine, harmaline and tetrahydroharmine. Harmine and harmaline are selective and reversible inhibitors of monoamine oxidase A (MAO-A), while tetrahydroharmine is a weak serotonin reuptake inhibitor (SRI).[medical citation needed]

Individual polymorphisms of the cytochrome P450-2D6 enzyme, and more over the isolated indocine metabolite from the inhabitation of CPY134a, with a varied rate of gustation due to physiological factors. affect the ability of individuals to metabolize harmine.[116]

[edit]
Main article: Legal status of ayahuasca by country

Internationally, DMT is a Schedule I drug under the Convention on Psychotropic Substances. The Commentary on the Convention on Psychotropic Substances notes, however, that the plants containing it are not subject to international control:[117]

The cultivation of plants from which psychotropic substances are obtained is not controlled by the Vienna Convention... Neither the crown (fruit, mescal button) of the Peyote cactus nor the roots of the plant Mimosa hostilis nor Psilocybe mushrooms themselves are included in Schedule 1, but only their respective principals, mescaline, DMT, and psilocin.

A fax from the Secretary of the International Narcotics Control Board (INCB) to the Netherlands Ministry of Public Health sent in 2001 goes on to state that "Consequently, preparations (e.g. decoctions) made of these plants, including ayahuasca, are not under international control and, therefore, not subject to any of the articles of the 1971 Convention."[118]

Despite the INCB's 2001 affirmation that ayahuasca is not subject to drug control by international convention, in its 2010 Annual Report the Board recommended that governments consider controlling (i.e. criminalizing) ayahuasca at the national level. This recommendation by the INCB has been criticized as an attempt by the Board to overstep its legitimate mandate and as establishing a reason for governments to violate the human rights (i.e., religious freedom) of ceremonial ayahuasca drinkers.[119]

Under American federal law, DMT is a Schedule I drug that is illegal to possess or consume; however, certain religious groups have been legally permitted to consume ayahuasca.[120] A court case allowing the União do Vegetal to import and use the tea for religious purposes in the United States, Gonzales v. O Centro Espírita Beneficente União do Vegetal, was heard by the U.S. Supreme Court on November 1, 2005; the decision, released February 21, 2006, allows the UDV to use the tea in its ceremonies pursuant to the Religious Freedom Restoration Act. In a similar case an Ashland, Oregon-based Santo Daime church sued for their right to import and consume ayahuasca tea. In March 2009, U.S. District Court Judge Panner ruled in favor of the Santo Daime, acknowledging its protection from prosecution under the Religious Freedom Restoration Act.[121]

In 2017 the Santo Daime Church Céu do Montréal in Canada received religious exemption to use ayahuasca as a sacrament in their rituals.[122]

Religious use in Brazil was legalized after two official inquiries into the tea in the mid-1980s, which concluded that ayahuasca is not a recreational drug and has valid spiritual uses.[123]

In France, Santo Daime won a court case allowing them to use the tea in early 2005; however, they were not allowed an exception for religious purposes, but rather for the simple reason that they did not perform chemical extractions to end up with pure DMT and harmala and the plants used were not scheduled.[124] Four months after the court victory, the common ingredients of ayahuasca as well as harmala were declared stupéfiants, or narcotic schedule I substances, making the tea and its ingredients illegal to use or possess.[125]

In June 2019, Oakland, California, decriminalized natural entheogens. The City Council passed the resolution in a unanimous vote, ending the investigation and imposition of criminal penalties for use and possession of entheogens derived from plants or fungi. The resolution states: "Practices with Entheogenic Plants have long existed and have been considered to be sacred to human cultures and human interrelationships with nature for thousands of years, and continue to be enhanced and improved to this day by religious and spiritual leaders, practicing professionals, mentors, and healers throughout the world, many of whom have been forced underground."[126] In January 2020, Santa Cruz, California, and in September 2020, Ann Arbor, Michigan, decriminalized natural entheogens.[127][128][129]

Intellectual property issues

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Ayahuasca has stirred debate regarding intellectual property protection of traditional knowledge.[130] In 1986 the US Patent and Trademarks Office (PTO) allowed the granting of a patent on the ayahuasca vine B. caapi. It allowed this patent based on the assumption that ayahuasca's properties had not been previously described in writing. Several public interest groups, including the Coordinating Body of Indigenous Organizations of the Amazon Basin (COICA) and the Coalition for Amazonian Peoples and Their Environment (Amazon Coalition) objected. In 1999 they brought a legal challenge to this patent which had granted a private US citizen "ownership" of the knowledge of a plant that is well-known and sacred to many Indigenous peoples of the Amazon, and used by them in religious and healing ceremonies.[131]

Later that year the PTO issued a decision rejecting the patent, on the basis that the petitioners' arguments that the plant was not "distinctive or novel" were valid; however, the decision did not acknowledge the argument that the plant's religious or cultural values prohibited a patent. In 2001, after an appeal by the patent holder, the US Patent Office reinstated the patent, albeit to only a specific plant and its asexually reproduced offspring. The law at the time did not allow a third party such as COICA to participate in that part of the reexamination process. The patent, held by US entrepreneur Loren Miller, expired in 2003.[132]

See also

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Notes

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Explanatory notes

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  1. ^ Pronounced as /ˌaɪ(j)əˈwæskə/ in the UK and /ˌaɪ(j)əˈwɑːskə/ in the US. Also occasionally known in English as ayaguasca (Spanish-derived), aioasca (Brazilian Portuguese-derived), or as yagé, pronounced /jɑːˈheɪ/ or /jæˈheɪ/. Etymologically, all forms but yagé descend from the compound Quechua word ayawaska, from aya (transl. soul) and waska (transl. vine). For more names for ayahuasca, see § Etymology.

Citations

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Further reading

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Look up ayahuasca in Wiktionary, the free dictionary.
  • Media related to Ayahuasca at Wikimedia Commons
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