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Ayahuasca is not dosed by weight. It is a brewed beverage prepared by macerating and boiling B. caapi vine with DMT-containing plants such as P. viridis or D. cabrerana. Potency varies radically between preparations depending on ingredient ratios, preparation skill, and admixtures, making standardized dosing unfeasible.
Effects vary widely by individual, dose, and context.
The physical effects of Ayahuasca can be broken down into three main components all of which progressively intensify proportional to dosage.
The head space of ayahuasca is described by many as extremely sober and clear headed in its style when compared to other commonly used psychedelics such as LSD or Psilocin. This is despite the fact that it contains a large number of psychedelic typical and unique cognitive effects.
The visual geometry that is present throughout this trip can be described as more similar in appearance to that of Psilocin than LSD. They can be comprehensively described as structured in their organization, organic in geometric style, intricate in complexity, large in size, fast and smooth in motion, colourful in scheme, glossy in colour, equal in blurred and sharp edges and equal in rounded and angular corners. At higher dosages they are significantly more likely to result in states of level 7B visual geometry over level 7A. In terms of their manifestation, they are progressive in nature and continuously self-complexify in settings with little or no visual input and disturbances.
Ayahuasca and other forms of DMT produce a full range of high level hallucinatory states in a fashion that is more consistent and reproducible than that of any other commonly used psychedelic.
The auditory effects of ayahuasca are extremely consistent in occurrence in comparison to that of LSD and psilocin and exhibit a full range of effects.
These combinations are considered extremely harmful and should always be avoided. Reactions to these drugs taken in combination are highly unpredictable and have a potential to cause death.
There is considerable risk of physical harm when taking these combinations, they should be avoided where possible.
These combinations are not usually physically harmful, but may produce undesirable effects, such as physical discomfort or overstimulation. Extreme use may cause physical health issues. Synergistic effects may be unpredictable. Care should be taken when choosing to use this combination.
Ayahuasca shows no psychological addiction potential and many users report a self-regulating quality to the substance. Research has shown it may actually be effective in treating addictions, with lower Addiction Severity Index scores observed in ayahuasca users compared to controls.
Ayahuasca is not physically addictive and does not produce physical dependence. The substance builds no significant tolerance and can theoretically be used frequently without developing dependence.
The lethal dose of ayahuasca relative to a typical recreational or entheogenic dose is estimated to be approximately 50-fold based on animal studies and human case reports. Deaths associated with DMT have been reported, though these are rare.
Nausea, vomiting, and diarrhea ('la purga') are common acute effects during the experience; these are transient symptoms related to the mechanism of action and are not indicative of organ damage.
Acute increases in blood pressure and heart rate (tachycardia) occur during intoxication; these effects are transient and resolve after the experience ends.
Transient increases in prolactin, cortisone, and growth hormone secretion have been correlated with ayahuasca consumption; these hormonal changes occur during the acute experience.
Harmaline has been reported to exhibit antimicrobial, antileishmanial, and antiplasmodial properties. Harmala alkaloids have demonstrated ability to expel parasitic worms by stunning or killing them.
Ayahuasca is suspected of triggering psychosis and schizophrenia in individuals with a predisposition to these conditions. Acute delusions, paranoia, and confusional states may occur during the experience, particularly when accompanied by severe nausea. Family history of psychotic disorders is considered a contraindication.
Seizures are listed among the rarer side effects of ayahuasca.
Ayahuasca has been used by the indigenous peoples of South America since before recorded history. The word itself derives from Quechuan languages spoken in the Andes, with its name translating to "spirit rope" or "liana of the soul," referring both to the Banisteriopsis caapi vine and the…
Convention on Psychotropic Substances 1971 (DMT is Schedule I, but plants and preparations containing it are not subject to international control)
Religious use was legalized following two official government inquiries in the mid-1980s, which concluded that ayahuasca is not a recreational drug and has valid spiritual applications. Brazil is the origin of the Santo Daime and União do Vegetal syncretic religious movements.
In early 2005, Santo Daime initially won a court case permitting use of the tea, as they did not perform chemical extractions and the plants were not scheduled. However, four months later, the common botanical ingredients of ayahuasca along with harmala alkaloids were declared stupéfiants (narcotic Schedule I substances), making the tea and its ingredients illegal to possess or use. As of 2005, nearly all DMT-containing plants that could be used in ayahuasca preparations became controlled.
Ayahuasca is legal and formally protected as part of the nation's cultural heritage. When ratifying the 1971 Convention on Psychotropic Substances, Peru entered a reservation excluding Ayahuasca and San Pedro from international control, citing traditional ritual use by Amazonian peoples. On 24 June 2008, the Instituto Nacional de Cultura declared the traditional knowledge and ceremonial use of ayahuasca by Indigenous communities as Patrimonio Cultural de la Nación (Cultural Heritage of the Nation).
DMT and harmaline are both controlled under the Controlled Drugs and Substances Act. However, in 2017, the Santo Daime Church Céu do Montréal received a religious exemption permitting the use of ayahuasca as a sacrament in their rituals.
The first ayahuasca churches affiliated with Brazilian Santo Daime were established here. In 2001, the Amsterdam district court ruled in favor of Santo Daime leaders Hans Bogers and Geraldine Fijneman, finding that the prosecution could not demonstrate sufficient threat to public health and order to justify denying religious freedom under ECHR Article 9. This verdict established an important legal precedent, and various ayahuasca groups have since operated in the country.
DMT is a Schedule I controlled substance under federal law, making ayahuasca brews technically illegal. However, the plants themselves contain no scheduled chemicals and remain legal. Religious organizations have obtained legal exemptions under the Religious Freedom Restoration Act, including the União do Vegetal (Supreme Court ruling in Gonzales v. O Centro Espírita Beneficente União do Vegetal, 2006) and Santo Daime (District Court ruling, 2009). Several municipalities have decriminalized natural entheogens including Oakland, California (June 2019), Santa Cruz, California (January 2020), and Ann Arbor, Michigan (September 2020).
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