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Index Hallucinogen

A hallucinogen is a psychoactive agent which can cause hallucinations, perceptual anomalies, and other substantial subjective changes in thoughts, emotion, and consciousness. [1]

216 relations: Acetylcholine, Acetylcholine receptor, Addiction, Agonist, Albert Hofmann, Alcoholism, Aldous Huxley, Alexander Shulgin, Alkaloid, Allen Ginsberg, Altered state of consciousness, Alzheimer's disease, Amanita muscaria, Amazon River, Ancient Egypt, Ancient Greece, Ancient Greek, Ancient history, Animism, Anti-war movement, Anticholinergic, Antihistamine, Atropine, Ayahuasca, Aztecs, Beta-Carboline, Brainwashing, Brazil, Bufotenin, Cactus, Cannabinoid receptor type 1, Cannabinoidergic, Cannabis (drug), Capital punishment, Central Intelligence Agency, Central nervous system, Chemical synthesis, Chemical warfare, Christian, Civil liberties, Closed-eye hallucination, Cluster headache, Cognitive liberty, Consciousness, Conservatism, Counterculture, Creativity, Crime, Curing of tobacco, Cyclic adenosine monophosphate, ..., David F. Duncan, Delirium, Dementia, Depersonalization, Depressant, Derealization, Dextromethorphan, Dimenhydrinate, Diphenhydramine, Dissociative, Divination, DNA methylation, Drug harmfulness, Drug policy of the Netherlands, Emotion, Empathogen–entactogen, Entheogen, Environmentalist, Ergoline, Europe, Feminism, Freedom of religion, Freedom of thought, GABAA receptor, GABAergic, Gay, Hallucination, Hallucinogen, Hallucinogen persisting perception disorder, Hallucinogenic plants in Chinese herbals, Harmala alkaloid, Healing, Hedonism, Heffter Research Institute, Hippie, Hyperthermia, Hypoxia (medical), Inca Empire, Indigenous peoples, Interrogation, Introspection, Κ-opioid receptor, Jerry Garcia, John Olney, Ken Kesey, Ketamine, Kidney, Leo Hollister, Louis Lewin, Lysergamides, Lysergic acid diethylamide, Lysergol, Major depressive disorder, Maya civilization, MDMA, Medicinal chemistry, Mescaline, Methamphetamine, Methoxetamine, Mexico, Millennium, MMDA (drug), Monoamine oxidase inhibitor, Multidisciplinary Association for Psychedelic Studies, Muscarine, Muscarinic acetylcholine receptor, Muscimol, Mushroom, Mycenaean Greece, Myristicin, N,N-Dimethyltryptamine, Native American Church, Netherlands, Neurotransmitter, Nicotine, Nitrogen, Nitrous oxide, NMDA receptor, NMDA receptor antagonist, Nutmeg, O-Acetylpsilocin, Obsessive–compulsive disorder, Opioid, Opioidergic, Out-of-body experience, Over-the-counter drug, Paranoid schizophrenia, Parkinson's disease, Perception, Peruvian Amazonia, Peter Stafford, Peyote, Pharmacophore, Phencyclidine, Phenethylamine, Plant, Posttraumatic stress disorder, Prehistory, Project MKUltra, Psilocybe, Psilocybin, Psilocybin mushroom, Psychedelia, Psychedelic drug, Psychedelic experience, Psychedelic therapy, Psychiatry, Psychoactive drug, Psychonautics, Psychopharmacology, Psychosis, Psychotherapy, Psychotomimetic, R. Gordon Wasson, Radical (chemistry), Receptor antagonist, Recreational drug use, Recreational use of dextromethorphan, Religious experience, Research chemical, Richard Evans Schultes, Rite of passage, Ritual, Robert J. Weitlaner, Robert S. Gold, Ronin Publishing, Salvia divinorum, Salvinorin A, Santo Daime, Schizophrenia, Science, Seeking the Magic Mushroom, Serotonergic, Serotonergic psychedelic, Serotonin, Serotonin releasing agent, Shamanism, Sobriety, Solanaceae, Spirituality, Stimulant psychosis, Subculture, Substituted methylenedioxyphenethylamine, Supreme Court of the United States, Synaptic vesicle, Syncretism, Tachycardia, Tetrahydrocannabinol, The Doors of Perception, Thought, Timothy Leary, Tobacco, Tropane alkaloid, Tryptamine, Turbina corymbosa, União do Vegetal, Urarina people, Vedic period, Western Europe, Western world, World War II, 2,5-Dimethoxy-4-bromoamphetamine, 25-NB, 2C (psychedelics), 3,4-Methylenedioxyamphetamine, 5-HT2A receptor. Expand index (166 more) »


Acetylcholine (ACh) is an organic chemical that functions in the brain and body of many types of animals, including humans, as a neurotransmitter—a chemical message released by nerve cells to send signals to other cells.

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Acetylcholine receptor

An acetylcholine receptor (abbreviated AChR) is an integral membrane protein that responds to the binding of acetylcholine, a neurotransmitter.

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Addiction is a brain disorder characterized by compulsive engagement in rewarding stimuli despite adverse consequences.

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An agonist is a chemical that binds to a receptor and activates the receptor to produce a biological response.

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Albert Hofmann

Albert Hofmann (11 January 1906 – 29 April 2008) was a Swiss scientist known best for being the first person to synthesize, ingest, and learn of the psychedelic effects of lysergic acid diethylamide (LSD).

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Alcoholism, also known as alcohol use disorder (AUD), is a broad term for any drinking of alcohol that results in mental or physical health problems.

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Aldous Huxley

Aldous Leonard Huxley (26 July 1894 – 22 November 1963) was an English writer, novelist, philosopher, and prominent member of the Huxley family.

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Alexander Shulgin

Alexander Theodore "Sasha" Shulgin (June 17, 1925 June 2, 2014) was an American medicinal chemist, biochemist, organic chemist, pharmacologist, psychopharmacologist, and author.

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Alkaloids are a class of naturally occurring chemical compounds that mostly contain basic nitrogen atoms.

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Allen Ginsberg

Irwin Allen Ginsberg (June 3, 1926 – April 5, 1997) was an American poet, philosopher, writer, and activist.

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Altered state of consciousness

An altered state of consciousness (ASC), also called altered state of mind or mind alteration, is any condition which is significantly different from a normal waking state.

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Alzheimer's disease

Alzheimer's disease (AD), also referred to simply as Alzheimer's, is a chronic neurodegenerative disease that usually starts slowly and worsens over time.

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Amanita muscaria

Amanita muscaria, commonly known as the fly agaric or fly amanita, is a basidiomycete mushroom, one of many in the genus Amanita.

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Amazon River

The Amazon River (or; Spanish and Amazonas) in South America is the largest river by discharge volume of water in the world, and either the longest or second longest.

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Ancient Egypt

Ancient Egypt was a civilization of ancient Northeastern Africa, concentrated along the lower reaches of the Nile River - geographically Lower Egypt and Upper Egypt, in the place that is now occupied by the countries of Egypt and Sudan.

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Ancient Greece

Ancient Greece was a civilization belonging to a period of Greek history from the Greek Dark Ages of the 13th–9th centuries BC to the end of antiquity (AD 600).

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Ancient Greek

The Ancient Greek language includes the forms of Greek used in ancient Greece and the ancient world from around the 9th century BC to the 6th century AD.

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Ancient history

Ancient history is the aggregate of past events, "History" from the beginning of recorded human history and extending as far as the Early Middle Ages or the post-classical history.

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Animism (from Latin anima, "breath, spirit, life") is the religious belief that objects, places and creatures all possess a distinct spiritual essence.

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Anti-war movement

An anti-war movement (also antiwar) is a social movement, usually in opposition to a particular nation's decision to start or carry on an armed conflict, unconditional of a maybe-existing just cause.

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An anticholinergic agent is a substance that blocks the neurotransmitter acetylcholine in the central and the peripheral nervous system.

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Antihistamines are drugs which treat allergic rhinitis and other allergies.

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Atropine is a medication to treat certain types of nerve agent and pesticide poisonings as well as some types of slow heart rate and to decrease saliva production during surgery.

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Ayahuasca, iowaska, or yagé, is an entheogenic brew made out of Banisteriopsis caapi vine and other ingredients.

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The Aztecs were a Mesoamerican culture that flourished in central Mexico in the post-classic period from 1300 to 1521.

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β-Carboline (9H-pyridoindole), also known as norharmane, is a nitrogen containing heterocycle.

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Brainwashing (also known as mind control, menticide, coercive persuasion, thought control, thought reform, and re-education) is the concept that the human mind can be altered or controlled by certain psychological techniques.

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Brazil (Brasil), officially the Federative Republic of Brazil (República Federativa do Brasil), is the largest country in both South America and Latin America.

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Bufotenin (5-HO-DMT, bufotenine) is a tryptamine related to the neurotransmitter serotonin.

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A cactus (plural: cacti, cactuses, or cactus) is a member of the plant family Cactaceae,Although the spellings of botanical families have been largely standardized, there is little agreement among botanists as to how these names are to be pronounced.

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Cannabinoid receptor type 1

The cannabinoid type 1 receptor, often abbreviated as CB1, is a G protein-coupled cannabinoid receptor located in the central and peripheral nervous system.

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Cannabinoidergic, or cannabinergic, means "working on the endocannabinoid neurotransmitters".

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Cannabis (drug)

Cannabis, also known as marijuana among other names, is a psychoactive drug from the ''Cannabis'' plant intended for medical or recreational use.

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Capital punishment

Capital punishment, also known as the death penalty, is a government-sanctioned practice whereby a person is put to death by the state as a punishment for a crime.

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Central Intelligence Agency

The Central Intelligence Agency (CIA) is a civilian foreign intelligence service of the United States federal government, tasked with gathering, processing, and analyzing national security information from around the world, primarily through the use of human intelligence (HUMINT).

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Central nervous system

The central nervous system (CNS) is the part of the nervous system consisting of the brain and spinal cord.

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Chemical synthesis

Chemical synthesis is a purposeful execution of chemical reactions to obtain a product, or several products.

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Chemical warfare

Chemical warfare (CW) involves using the toxic properties of chemical substances as weapons.

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A Christian is a person who follows or adheres to Christianity, an Abrahamic, monotheistic religion based on the life and teachings of Jesus Christ.

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Civil liberties

Civil liberties or personal freedoms are personal guarantees and freedoms that the government cannot abridge, either by law or by judicial interpretation, without due process.

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Closed-eye hallucination

Closed-eye hallucinations and closed-eye visualizations (CEV) are a distinct class of hallucination.

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Cluster headache

Cluster headache (CH) is a neurological disorder characterized by recurrent, severe headaches on one side of the head, typically around the eye.

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Cognitive liberty

Cognitive liberty, or the "right to mental self-determination", is the freedom of an individual to control his or her own mental processes, cognition, and consciousness.

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Consciousness is the state or quality of awareness, or, of being aware of an external object or something within oneself.

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Conservatism is a political and social philosophy promoting traditional social institutions in the context of culture and civilization.

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A counterculture (also written counter-culture) is a subculture whose values and norms of behavior differ substantially from those of mainstream society, often in opposition to mainstream cultural mores.

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Creativity is a phenomenon whereby something new and somehow valuable is formed.

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In ordinary language, a crime is an unlawful act punishable by a state or other authority.

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Curing of tobacco

It is necessary to cure tobacco after harvesting and before it can be consumed.

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Cyclic adenosine monophosphate

Cyclic adenosine monophosphate (cAMP, cyclic AMP, or 3',5'-cyclic adenosine monophosphate) is a second messenger important in many biological processes.

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David F. Duncan

David F. Duncan (born in Kansas City, Missouri on June 26, 1947) is president of Duncan & Associates, a firm providing consultation on research design and data collection for behavioral and policy studies.

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Delirium, also known as acute confusional state, is an organically caused decline from a previously baseline level of mental function.

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Dementia is a broad category of brain diseases that cause a long-term and often gradual decrease in the ability to think and remember that is great enough to affect a person's daily functioning.

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Depersonalization can consist of a detachment within the self, regarding one's mind or body, or being a detached observer of oneself.

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A depressant, or central depressant, is a drug that lowers neurotransmission levels, which is to depress or reduce arousal or stimulation, in various areas of the brain.

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Derealization (sometimes abbreviated as DR) is an alteration in the perception or experience of the external world so that it seems unreal.

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Dextromethorphan (DXM or DM) is a drug of the morphinan class with sedative, dissociative, and stimulant properties (at higher doses).

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Dimenhydrinate, marketed as Dramamine and Gravol among others, is an over-the-counter medication used to treat motion sickness and nausea.

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Diphenhydramine is an antihistamine mainly used to treat allergies.

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Dissociatives are a class of hallucinogen, which distort perceptions of sight and sound and produce feelings of detachment – dissociation – from the environment and self.

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Divination (from Latin divinare "to foresee, to be inspired by a god", related to divinus, divine) is the attempt to gain insight into a question or situation by way of an occultic, standardized process or ritual.

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DNA methylation

DNA methylation is a process by which methyl groups are added to the DNA molecule.

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Drug harmfulness

Drug harmfulness is the degree to which a psychoactive drug is harmful to a user and is measured in various ways, such as by addictiveness and the potential for physical harm.

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Drug policy of the Netherlands

While recreational use, possession and trade of non-medicinal drugs described by the Opium Law are all technically illegal under Dutch law, official policy since the late 20th century has been to openly tolerate all recreational use while tolerating the other two under certain circumstances.

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Emotion is any conscious experience characterized by intense mental activity and a certain degree of pleasure or displeasure.

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Empathogens or entactogens are a class of psychoactive drugs that produce experiences of emotional communion, oneness, relatedness, emotional openness—that is, empathy or sympathy—as particularly observed and reported for experiences with 3,4- Methylenedioxymethamphetamine (MDMA).

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An entheogen is a class of psychoactive substances that induce any type of spiritual experience aimed at development.

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An environmentalist is a supporter of the goals of the environmental movement, "a political and ethical movement that seeks to improve and protect the quality of the natural environment through changes to environmentally harmful human activities".

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Ergoline derivatives comprise a diverse group of chemical compounds whose structural skeleton is the alkaloid ergoline.

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Europe is a continent located entirely in the Northern Hemisphere and mostly in the Eastern Hemisphere.

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Feminism is a range of political movements, ideologies, and social movements that share a common goal: to define, establish, and achieve political, economic, personal, and social equality of sexes.

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Freedom of religion

Freedom of religion is a principle that supports the freedom of an individual or community, in public or private, to manifest religion or belief in teaching, practice, worship, and observance without government influence or intervention.

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Freedom of thought

Freedom of thought (also called freedom of conscience or ideas) is the freedom of an individual to hold or consider a fact, viewpoint, or thought, independent of others' viewpoints.

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GABAA receptor

The GABAA receptor (GABAAR) is an ionotropic receptor and ligand-gated ion channel.

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GABAergic means "pertaining to or affecting the neurotransmitter GABA".

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Gay is a term that primarily refers to a homosexual person or the trait of being homosexual.

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A hallucination is a perception in the absence of external stimulus that has qualities of real perception.

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A hallucinogen is a psychoactive agent which can cause hallucinations, perceptual anomalies, and other substantial subjective changes in thoughts, emotion, and consciousness.

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Hallucinogen persisting perception disorder

Hallucinogen persisting perception disorder (HPPD) is a disorder characterized by a continual presence of sensory disturbances, most commonly visual, that are reminiscent of those generated by the use of hallucinogenic substances.

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Hallucinogenic plants in Chinese herbals

For over two millennia, texts in Chinese herbology and traditional Chinese medicine have recorded medicinal plants that are also hallucinogens and psychedelics.

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Harmala alkaloid

Several alkaloids that function as monoamine oxidase inhibitors (MAOIs) are found in the seeds of Peganum harmala (also known as Harmal or Syrian Rue), as well as tobacco leaves including harmine, harmaline, and harmalol, which are members of a group of substances with a similar chemical structure collectively known as harmala alkaloids.

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Healing (literally meaning to make whole) is the process of the restoration of health from an unbalanced, diseased or damaged organism.

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Hedonism is a school of thought that argues that the pursuit of pleasure and intrinsic goods are the primary or most important goals of human life.

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Heffter Research Institute

The Heffter Research Institute is a 501(c)(3) non-profit organization that promotes research with classic hallucinogens and psychedelics, predominantly psilocybin, to contribute to a greater understanding of the mind and to alleviate suffering.

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A hippie (sometimes spelled hippy) is a member of a counterculture, originally a youth movement that began in the United States during the mid-1960s and spread to other countries around the world.

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Hyperthermia is elevated body temperature due to failed thermoregulation that occurs when a body produces or absorbs more heat than it dissipates.

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Hypoxia (medical)

Hypoxia is a condition in which the body or a region of the body is deprived of adequate oxygen supply at the tissue level.

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Inca Empire

The Inca Empire (Quechua: Tawantinsuyu, "The Four Regions"), also known as the Incan Empire and the Inka Empire, was the largest empire in pre-Columbian America, and possibly the largest empire in the world in the early 16th century.

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Indigenous peoples

Indigenous peoples, also known as first peoples, aboriginal peoples or native peoples, are ethnic groups who are the pre-colonial original inhabitants of a given region, in contrast to groups that have settled, occupied or colonized the area more recently.

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Interrogation (also called questioning) is interviewing as commonly employed by law enforcement officers, military personnel, and intelligence agencies with the goal of eliciting useful information.

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Introspection is the examination of one's own conscious thoughts and feelings.

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Κ-opioid receptor

The κ-opioid receptor (KOR) is a G protein-coupled receptor that in humans is encoded by the OPRK1 gene.

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Jerry Garcia

Jerome John Garcia (August 1, 1942 – August 9, 1995) was an American singer-songwriter and guitarist, best known for his work as the lead guitarist and as a vocalist with the band Grateful Dead, which came to prominence during the counterculture era in the 1960s.

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John Olney

John Olney (1932April 14, 2015) was a medical doctor and a professor of psychiatry, pathology, and immunology at the Washington University School of Medicine.

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Ken Kesey

Kenneth Elton Kesey (September 17, 1935 – November 10, 2001) was an American novelist, essayist, and countercultural figure.

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Ketamine, sold under the brand name Ketalar among others, is a medication mainly used for starting and maintaining anesthesia.

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The kidneys are two bean-shaped organs present in left and right sides of the body in vertebrates.

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Leo Hollister

Leo Hollister (c. 1920-2000) was an American professor emeritus of medicine, psychiatry and pharmacology.

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Louis Lewin

Louis Lewin (born in Tuchel, West Prussia, 9 November 1850; died 1 December 1929 in Berlin) was a German pharmacologist.

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Amides of lysergic acid are collectively known as lysergamides.

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Lysergic acid diethylamide

Lysergic acid diethylamide (LSD), also known as acid, is a psychedelic drug known for its psychological effects, which may include altered awareness of one's surroundings, perceptions, and feelings as well as sensations and images that seem real though they are not.

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Lysergol is an alkaloid of the ergoline family that occurs as a minor constituent in some species of fungi (most within Claviceps), and in the morning glory family of plants (Convolvulaceae), including the hallucinogenic seeds of Rivea corymbosa (ololiuhqui), Argyreia nervosa (Hawaiian baby woodrose) and Ipomoea violacea.

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Major depressive disorder

Major depressive disorder (MDD), also known simply as depression, is a mental disorder characterized by at least two weeks of low mood that is present across most situations.

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Maya civilization

The Maya civilization was a Mesoamerican civilization developed by the Maya peoples, and noted for its hieroglyphic script—the only known fully developed writing system of the pre-Columbian Americas—as well as for its art, architecture, mathematics, calendar, and astronomical system.

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3,4-Methylenedioxymethamphetamine (MDMA), commonly known as ecstasy (E), is a psychoactive drug used primarily as a recreational drug.

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Medicinal chemistry

Medicinal chemistry and pharmaceutical chemistry are disciplines at the intersection of chemistry, especially synthetic organic chemistry, and pharmacology and various other biological specialties, where they are involved with design, chemical synthesis and development for market of pharmaceutical agents, or bio-active molecules (drugs).

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Mescaline (3,4,5-trimethoxyphenethylamine) is a naturally occurring psychedelic alkaloid of the phenethylamine class, known for its hallucinogenic effects comparable to those of LSD and psilocybin.

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Methamphetamine (contracted from) is a potent central nervous system (CNS) stimulant that is mainly used as a recreational drug and less commonly as a second-line treatment for attention deficit hyperactivity disorder and obesity.

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Methoxetamine, abbreviated as MXE, is a dissociative hallucinogen that has been sold as a designer drug.

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Mexico (México; Mēxihco), officially called the United Mexican States (Estados Unidos Mexicanos) is a federal republic in the southern portion of North America.

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A millennium (plural millennia or, rarely, millenniums) is a period equal to 1000 years, also called kiloyears.

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MMDA (drug)

MMDA (3-methoxy-4,5-methylenedioxyamphetamine; 5-methoxy-MDA) is a psychedelic and entactogen drug of the amphetamine class.

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Monoamine oxidase inhibitor

Monoamine oxidase inhibitors (MAOIs) are a class of drugs that inhibit the activity of one or both monoamine oxidase enzymes: monoamine oxidase A (MAO-A) and monoamine oxidase B (MAO-B).

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Multidisciplinary Association for Psychedelic Studies

The Multidisciplinary Association for Psychedelic Studies (MAPS) is a membership-based 501(c)(3) organization working to raise awareness and understanding of psychedelic substances.

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Muscarine, L-(+)-muscarine, or muscarin is a natural product found in certain mushrooms, particularly in Inocybe and Clitocybe species, such as the deadly C. dealbata.

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Muscarinic acetylcholine receptor

Muscarinic acetylcholine receptors, or mAChRs, are acetylcholine receptors that form G protein-coupled receptor complexes in the cell membranes of certain neurons and other cells.

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Muscimol (also known as agarin or pantherine) is one of the principal psychoactive constituents of Amanita muscaria and related species of mushroom.

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A mushroom, or toadstool, is the fleshy, spore-bearing fruiting body of a fungus, typically produced above ground on soil or on its food source.

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Mycenaean Greece

Mycenaean Greece (or Mycenaean civilization) was the last phase of the Bronze Age in Ancient Greece, spanning the period from approximately 1600–1100 BC.

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Myristicin is a phenylpropene, a natural organic compound present in small amounts in the essential oil of nutmeg and to a lesser extent in other spices such as parsley and dill.

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N,N-Dimethyltryptamine (DMT or N,N-DMT) is a tryptamine molecule which occurs in many plants and animals.

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Native American Church

The Native American Church (NAC), also known as Peyotism and Peyote Religion, is a Native American religion that teaches a combination of traditional Native American beliefs and Christianity, with sacramental use of the entheogen peyote.

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The Netherlands (Nederland), often referred to as Holland, is a country located mostly in Western Europe with a population of seventeen million.

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Neurotransmitters are endogenous chemicals that enable neurotransmission.

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Nicotine is a potent parasympathomimetic stimulant and an alkaloid found in the nightshade family of plants.

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Nitrogen is a chemical element with symbol N and atomic number 7.

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Nitrous oxide

Nitrous oxide, commonly known as laughing gas or nitrous, is a chemical compound, an oxide of nitrogen with the formula.

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NMDA receptor

The N-methyl-D-aspartate receptor (also known as the NMDA receptor or NMDAR), is a glutamate receptor and ion channel protein found in nerve cells.

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NMDA receptor antagonist

NMDA receptor antagonists are a class of anesthetics that work to antagonize, or inhibit the action of, the ''N''-Methyl-D-aspartate receptor (NMDAR).

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Nutmeg is the seed or ground spice of several species of the genus Myristica.

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O-Acetylpsilocin (also known as psilacetin, 4-acetoxy-DMT, or 4-AcO-DMT) is a synthetically produced psychoactive drug and has been suggested by David Nichols to be a potentially useful alternative to psilocybin for pharmacological studies, as they are both believed to be prodrugs of psilocin.

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Obsessive–compulsive disorder

Obsessive–compulsive disorder (OCD) is a mental disorder where people feel the need to check things repeatedly, perform certain routines repeatedly (called "rituals"), or have certain thoughts repeatedly (called "obsessions").

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Opioids are substances that act on opioid receptors to produce morphine-like effects.

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An opioidergic agent (or drug) is a chemical which functions to directly modulate the opioid neuropeptide systems (i.e., endorphin, enkephalin, dynorphin, nociceptin) in the body or brain.

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Out-of-body experience

An out-of-body experience (OBE or sometimes OOBE) is an experience that typically involves a sensation of floating outside one's body and, in some cases, the feeling of perceiving one's physical body as if from a place outside one's body (autoscopy).

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Over-the-counter drug

Over-the-counter (OTC) drugs are medicines sold directly to a consumer without a prescription from a healthcare professional, as opposed to prescription drugs, which may be sold only to consumers possessing a valid prescription.

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Paranoid schizophrenia

Paranoid schizophrenia is the most common type of schizophrenia.

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Parkinson's disease

Parkinson's disease (PD) is a long-term degenerative disorder of the central nervous system that mainly affects the motor system.

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Perception (from the Latin perceptio) is the organization, identification, and interpretation of sensory information in order to represent and understand the presented information, or the environment.

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Peruvian Amazonia

The Peruvian Amazonia (Amazonía del Perú) is the area of the Amazon rainforest included within the country of Peru, from east of the Andes to the borders with Ecuador, Colombia, Brazil and Bolivia.

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Peter Stafford

Peter Stafford (April 11, 1939 – July 20, 2007) was an American writer and author of the Psychedelics Encyclopedia.

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Lophophora williamsii or peyote is a small, spineless cactus with psychoactive alkaloids, particularly mescaline.

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An example of a pharmacophore model. A pharmacophore is an abstract description of molecular features that are necessary for molecular recognition of a ligand by a biological macromolecule.

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Phencyclidine (PCP), also known as angel dust among other names, is a drug used for its mind altering effects.

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Phenethylamine (PEA) is an organic compound, natural monoamine alkaloid, and trace amine which acts as a central nervous system stimulant in humans.

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Plants are mainly multicellular, predominantly photosynthetic eukaryotes of the kingdom Plantae.

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Posttraumatic stress disorder

Posttraumatic stress disorder (PTSD)Acceptable variants of this term exist; see the Terminology section in this article.

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Human prehistory is the period between the use of the first stone tools 3.3 million years ago by hominins and the invention of writing systems.

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Project MKUltra

Project MKUltra, also called the CIA mind control program, is the code name given to a program of experiments on human subjects that were designed and undertaken by the United States Central Intelligence Agency—and which were, at times, illegal.

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Psilocybe is a genus of gilled mushrooms growing worldwide.

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Psilocybin is a naturally occurring psychedelic prodrug compound produced by more than 200 species of mushrooms, collectively known as psilocybin mushrooms.

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Psilocybin mushroom

A psilocybin mushroom is one of a polyphyletic group of fungi that contain any of various psychedelic compounds, including psilocybin, psilocin, and baeocystin.

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Psychedelia is the subculture, originating in the 1960s, of people who often use psychedelic drugs such as LSD, mescaline (found in peyote) and psilocybin (found in some mushrooms).

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Psychedelic drug

Psychedelics are a class of drug whose primary action is to trigger psychedelic experiences via serotonin receptor agonism, causing thought and visual/auditory changes, and altered state of consciousness.

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Psychedelic experience

A psychedelic experience (or 'trip') is a temporary altered state of consciousness induced by the consumption of psychedelic drugs (such as mescaline, LSD, psilocybin, and DMT).

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Psychedelic therapy

Psychedelic therapy refers to therapeutic practices involving the use of psychedelic drugs, particularly serotonergic psychedelics such as LSD, psilocybin, DMT, MDMA, mescaline, and 2C-B, primarily to assist psychotherapy.

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Psychiatry is the medical specialty devoted to the diagnosis, prevention and treatment of mental disorders.

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Psychoactive drug

A psychoactive drug, psychopharmaceutical, or psychotropic is a chemical substance that changes brain function and results in alterations in perception, mood, consciousness, cognition, or behavior.

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Psychonautics (from the Ancient Greek ψυχή psychē and ναύτης naútēs – "a sailor of the soul") refers both to a methodology for describing and explaining the subjective effects of altered states of consciousness, especially an important subgroup called holotropic states, including those induced by meditation or mind-altering substances, and to a research paradigm in which the researcher voluntarily immerses himself or herself into an altered mental state in order to explore the accompanying experiences.

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Psychopharmacology (from Greek label; label; and label) is the scientific study of the effects drugs have on mood, sensation, thinking, and behavior.

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Psychosis is an abnormal condition of the mind that results in difficulties telling what is real and what is not.

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Psychotherapy is the use of psychological methods, particularly when based on regular personal interaction, to help a person change behavior and overcome problems in desired ways.

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A drug with psychotomimetic (also known as psychotogenic) actions mimics the symptoms of psychosis, including delusions and/or delirium, as opposed to just hallucinations.

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R. Gordon Wasson

Robert Gordon Wasson (September 22, 1898 – December 23, 1986) was an American author, ethnomycologist, and Vice President for Public Relations at J.P. Morgan & Co. In the course of CIA-funded research, Wasson made contributions to the fields of ethnobotany, botany, and anthropology.

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Radical (chemistry)

In chemistry, a radical (more precisely, a free radical) is an atom, molecule, or ion that has an unpaired valence electron.

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Receptor antagonist

A receptor antagonist is a type of receptor ligand or drug that blocks or dampens a biological response by binding to and blocking a receptor rather than activating it like an agonist.

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Recreational drug use

Recreational drug use is the use of a psychoactive drug to induce an altered state of consciousness for pleasure, by modifying the perceptions, feelings, and emotions of the user.

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Recreational use of dextromethorphan

Dextromethorphan, or DXM, a common active ingredient found in many over-the-counter cough suppressant cold medicines, is used as a recreational drug and entheogen for its dissociative effects.

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Religious experience

A religious experience (sometimes known as a spiritual experience, sacred experience, or mystical experience) is a subjective experience which is interpreted within a religious framework.

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Research chemical

Research chemicals are chemical substances used by scientists for medical and scientific research purposes.

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Richard Evans Schultes

Richard Evans Schultes (SHULL-tees;Jonathan Kandell,, The New York Times, April 13, 2001, Accessed March 11, 2015. January 12, 1915 – April 10, 2001) was an American biologist.

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Rite of passage

A rite of passage is a ceremony of the passage which occurs when an individual leaves one group to enter another.

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A ritual "is a sequence of activities involving gestures, words, and objects, performed in a sequestered place, and performed according to set sequence".

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Robert J. Weitlaner

Robert J. Weitlaner was born on April 28, 1883, in Steyr, Austria, the son of the civil engineer Julius Weitlaner and Therese Pillinger, a schoolteacher.

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Robert S. Gold

Robert S. Gold (born 1946) is a researcher in the application of computer technology to health education and health promotion.

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Ronin Publishing

Ronin Publishing, Inc. is a small press in Berkeley, California, founded in 1983 and incorporated in 1985, which publishes books as tools for personal development, visionary alternatives, and expanded consciousness.

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Salvia divinorum

Salvia divinorum (also known as sage of the diviners, ska maría pastora, seer's sage, yerba de la pastora or simply salvia) is a plant species with transient psychoactive properties when its leaves are consumed by chewing, smoking or as a tea.

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Salvinorin A

Salvinorin A is the main active psychotropic molecule in Salvia divinorum, a Mexican plant which has a long history of use as an entheogen by indigenous Mazatec shamans.

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Santo Daime

Santo Daime is a syncretic religion founded in the 1930s in the Brazilian Amazonian state of Acre by Raimundo Irineu Serra, known as Mestre Irineu.

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Schizophrenia is a mental disorder characterized by abnormal social behavior and failure to understand reality.

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R. P. Feynman, The Feynman Lectures on Physics, Vol.1, Chaps.1,2,&3.

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Seeking the Magic Mushroom

"Seeking the Magic Mushroom" is a 1957 photo essay by amateur mycologist Robert Gordon Wasson describing his experience taking psilocybin mushrooms in 1955 during a Mazatec ritual in Oaxaca, Mexico.

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Serotonergic or serotoninergic means "pertaining to or affecting serotonin".

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Serotonergic psychedelic

Serotonergic psychedelics (also known as serotonergic hallucinogens) are a subclass of psychedelic drugs with a method of action strongly tied to the neurotransmitter serotonin.

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Serotonin or 5-hydroxytryptamine (5-HT) is a monoamine neurotransmitter.

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Serotonin releasing agent

A serotonin releasing agent (SRA) is a type of drug that induces the release of serotonin into the neuronal synaptic cleft.

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Shamanism is a practice that involves a practitioner reaching altered states of consciousness in order to perceive and interact with what they believe to be a spirit world and channel these transcendental energies into this world.

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Sobriety is the condition of not having any measurable levels or effects from alcohol.

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The Solanaceae, or nightshades, are an economically important family of flowering plants.

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Traditionally, spirituality refers to a religious process of re-formation which "aims to recover the original shape of man," oriented at "the image of God" as exemplified by the founders and sacred texts of the religions of the world.

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Stimulant psychosis

Stimulant psychosis, also known as stimulant-induced psychotic disorder, is a psychosis symptom which involves hallucinations, paranoia, and/or delusions and typically occurs following an overdose on psychostimulants; however, it has also been reported to occur in approximately 0.1% of individuals, or 1 out of every 1,000 people, within the first several weeks after starting amphetamine or methylphenidate therapy.

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A subculture is a group of people within a culture that differentiates itself from the parent culture to which it belongs, often maintaining some of its founding principles.

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Substituted methylenedioxyphenethylamine

Substituted methylenedioxy- phenethylamines (MDxx) are a large chemical class of derivatives of the phenethylamines, which includes many psychoactive drugs that act as entactogens, psychedelics, and/or stimulants, as well as entheogens.

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Supreme Court of the United States

The Supreme Court of the United States (sometimes colloquially referred to by the acronym SCOTUS) is the highest federal court of the United States.

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Synaptic vesicle

In a neuron, synaptic vesicles (or neurotransmitter vesicles) store various neurotransmitters that are released at the synapse.

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Syncretism is the combining of different beliefs, while blending practices of various schools of thought.

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Tachycardia, also called tachyarrhythmia, is a heart rate that exceeds the normal resting rate.

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Tetrahydrocannabinol (THC) is one of at least 113 cannabinoids identified in cannabis.

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The Doors of Perception

The Doors of Perception is a philosophical essay, released as a book, by Aldous Huxley.

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Thought encompasses a “goal oriented flow of ideas and associations that leads to reality-oriented conclusion.” Although thinking is an activity of an existential value for humans, there is no consensus as to how it is defined or understood.

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Timothy Leary

Timothy Francis Leary (October 22, 1920 – May 31, 1996) was an American psychologist and writer known for advocating the exploration of the therapeutic potential of psychedelic drugs under controlled conditions.

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Tobacco is a product prepared from the leaves of the tobacco plant by curing them.

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Tropane alkaloid

Tropane alkaloids are a class of bicyclic alkaloids and secondary metabolites that contain a tropane ring in their chemical structure.

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Tryptamine is a monoamine alkaloid.

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Turbina corymbosa

Turbina corymbosa, syn. Rivea corymbosa, is a species of morning glory, native throughout Latin America from Mexico as far south as Peru and widely naturalised elsewhere.

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União do Vegetal

The Beneficent Spiritist Center União do Vegetal (Centro Espírita Beneficente União do Vegetal; or UDV) is a religious society founded on July 22, 1961 by José Gabriel da Costa, known as Mestre Gabriel.

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Urarina people

The Urarina are an indigenous people of the Peruvian Amazon Basin (Loreto) who inhabit the valleys of the Chambira, Urituyacu, and Corrientes Rivers.

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Vedic period

The Vedic period, or Vedic age, is the period in the history of the northwestern Indian subcontinent between the end of the urban Indus Valley Civilisation and a second urbanisation in the central Gangetic Plain which began in BCE.

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Western Europe

Western Europe is the region comprising the western part of Europe.

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Western world

The Western world refers to various nations depending on the context, most often including at least part of Europe and the Americas.

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World War II

World War II (often abbreviated to WWII or WW2), also known as the Second World War, was a global war that lasted from 1939 to 1945, although conflicts reflecting the ideological clash between what would become the Allied and Axis blocs began earlier.

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Dimethoxybromoamphetamine (DOB), also known as brolamfetamine (INN) and bromo-DMA, is a psychedelic drug and substituted amphetamine of the phenethylamine class of compounds.

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The 25-NB (25x-NBx) series, sometimes alternatively referred to as the NBOMe compounds, is a family of serotonergic psychedelics.

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2C (psychedelics)

2C (2C-x) is a general name for the family of psychedelic phenethylamines containing methoxy groups on the 2 and 5 positions of a benzene ring.

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3,4-Methylenedioxyamphetamine (MDA), is an empathogen-entactogen, psychostimulant, and psychedelic drug of the amphetamine family that is encountered mainly as a recreational drug.

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5-HT2A receptor

The mammalian 5-HT2A receptor is a subtype of the 5-HT2 receptor that belongs to the serotonin receptor family and is a G protein-coupled receptor (GPCR).

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[1] https://en.wikipedia.org/wiki/Hallucinogen

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