''Calea ternifolia'' ( syn. ''Calea zacatechichi'') is a species of flowering plant in the aster family,

Asteraceae Asteraceae () is a large family (biology), family of flowering plants that consists of over 32,000 known species in over 1,900 genera within the Order (biology), order Asterales. The number of species in Asteraceae is rivaled only by the Orchi ...

. It is native to

Mexico Mexico, officially the United Mexican States, is a country in North America. It is the northernmost country in Latin America, and borders the United States to the north, and Guatemala and Belize to the southeast; while having maritime boundar ...

and

Central America Central America is a subregion of North America. Its political boundaries are defined as bordering Mexico to the north, Colombia to the southeast, the Caribbean to the east, and the Pacific Ocean to the southwest. Central America is usually ...

. Its

English language English is a West Germanic language that developed in early medieval England and has since become a English as a lingua franca, global lingua franca. The namesake of the language is the Angles (tribe), Angles, one of the Germanic peoples th ...

common names include bitter-grass, Mexican calea, and dream herb.Simonienko, K., et al. (2013)
Psychoactive plant species – actual list of plants prohibited in Poland.
''Psychiatria Polska'' XLVII(3), 499–508. It is used in

traditional medicine Traditional medicine (also known as indigenous medicine or folk medicine) refers to the knowledge, skills, and practices rooted in the cultural beliefs of various societies, especially Indigenous groups, used for maintaining health and treatin ...

and ritual in its native range.Ferraz, A., et al. (2009)
Pharmacological and genotoxic evaluation of ''Calea clematidea'' and ''Calea uniflora''.
''Latin American Journal of Pharmacy'' 28(6), 858-6

/ref>

Uses

In Mexico the plant is used as a herbalism, herbal remedy for

dysentery Dysentery ( , ), historically known as the bloody flux, is a type of gastroenteritis that results in bloody diarrhea. Other symptoms may include fever, abdominal pain, and a feeling of incomplete defecation. Complications may include dehyd ...

and

fever Fever or pyrexia in humans is a symptom of an anti-infection defense mechanism that appears with Human body temperature, body temperature exceeding the normal range caused by an increase in the body's temperature Human body temperature#Fever, s ...

. The Zoque Popoluca people call the plant ''tam huñi'' ("bitter gum") and use it to treat

diarrhea Diarrhea (American English), also spelled diarrhoea or diarrhœa (British English), is the condition of having at least three loose, liquid, or watery bowel movements in a day. It often lasts for a few days and can result in dehydration d ...

and

asthma Asthma is a common long-term inflammatory disease of the airways of the lungs. It is characterized by variable and recurring symptoms, reversible airflow obstruction, and easily triggered bronchospasms. Symptoms include episodes of wh ...

, and the

Mixe people The Mixe (Spanish ' or rarely ' ) are an Indigenous people of Mexico who live in the eastern highlands of the state of Oaxaca. They speak the Mixe languages, which are classified in the Mixe–Zoque family, and are more culturally conservative ...

know it as ''poop taam ujts'' ("white bitter herb") and use it for stomachache and fever. The Chontal people of

Oaxaca Oaxaca, officially the Free and Sovereign State of Oaxaca, is one of the 32 states that compose the political divisions of Mexico, Federative Entities of the Mexico, United Mexican States. It is divided into municipalities of Oaxaca, 570 munici ...

reportedly use the plant, known locally as ''thle-pela-kano'', during

divination Divination () is the attempt to gain insight into a question or situation by way of an occultic ritual or practice. Using various methods throughout history, diviners ascertain their interpretations of how a should proceed by reading signs, ...

. Isolated reports describe rituals that involve smoking a plant believed to be this species, drinking it as a tea, and placing it under a pillow to induce divinatory or lucid dreams due to its properties as an oneirogen. ''Zacatechichi'', the former

species name In taxonomy, binomial nomenclature ("two-term naming system"), also called binary nomenclature, is a formal system of naming species of living things by giving each a name composed of two parts, both of which use Latin grammatical forms, altho ...

, is a Hispanicized form of the

Nahuatl Nahuatl ( ; ), Aztec, or Mexicano is a language or, by some definitions, a group of languages of the Uto-Aztecan language family. Varieties of Nahuatl are spoken by about Nahuas, most of whom live mainly in Central Mexico and have smaller popul ...

word "zacatl chichic" meaning "bitter grass". Users take the plant to help them remember their dreams; known

side effect In medicine, a side effect is an effect of the use of a medicinal drug or other treatment, usually adverse but sometimes beneficial, that is unintended. Herbal and traditional medicines also have side effects. A drug or procedure usually use ...

s include nausea and vomiting related to the taste and mild-to-severe allergic reaction. While quite bitter if brewed in hot water, the bitterness can be considerably masked by brewing with Osmanthus flowers, which have a compatible scent profile.

Chemical composition

Chemical compounds isolated from this species include flavones such as acacetin and sesquiterpene lactones such as germacranolides. The compound that is thought to cause the effects of Calea ternifolia is Caleicine a Prodrug of Eugenol a potent GABA positive modulator.''''

Pharmacology

Calea ternifolia and its effects are not fully understood beyond GABA modulation from Caleicine and other GABAergic compounds. The plant is known to potentiate dreams and hypnotic states and is bioavailable through common

routes of administration In pharmacology and toxicology, a route of administration is the way by which a medication, drug, fluid, poison, or other substance is taken into the body. Routes of administration are generally classified by the location at which the substance ...

such as

smoking Smoking is a practice in which a substance is combusted, and the resulting smoke is typically inhaled to be tasted and absorbed into the bloodstream of a person. Most commonly, the substance used is the dried leaves of the tobacco plant, whi ...

and

oral The word oral may refer to: Relating to the mouth * Relating to the mouth, the first portion of the alimentary canal that primarily receives food and liquid **Oral administration of medicines ** Oral examination (also known as an oral exam or ora ...

. Many compounds have been isolated from the plant and suspected to cause the psychoactive effects. Notable compounds that have been isolated are: * Chlorogenic acid (Lowers

blood pressure Blood pressure (BP) is the pressure of Circulatory system, circulating blood against the walls of blood vessels. Most of this pressure results from the heart pumping blood through the circulatory system. When used without qualification, the term ...

) * Α-Pinene (GABA_a positive modulator) * Caleicine (Prodrug of Eugenol a potent GABA positive modulator) *

Squalene Squalene is an organic compound. It is a triterpene with the formula C30H50. It is a colourless oil, although impure samples appear yellow. It was originally obtained from shark liver oil (hence its name, as '' Squalus'' is a genus of sharks). ...

(Precursor to steroid hormones) It is thought these compounds, and their respective pharmacological classes create the effects of Calea ternifolia. Caleicine is a unique sesquiterpene compound found only in ''Calea ternifolia'' and is one of many GABAergic compounds found in the plant and acts as a prodrug to the known bioactive and potent Eugenol. Caleicine is a strong candidate to be responsible the effects of Calea ternifolia as the GABA modulation Eugenol exhibits are the same that of ''Calea ternifolia.'' Calea ternifolias negative side effects,

nausea Nausea is a diffuse sensation of unease and discomfort, sometimes perceived as an urge to vomit. It can be a debilitating symptom if prolonged and has been described as placing discomfort on the chest, abdomen, or back of the throat. Over 30 d ...

vomiting Vomiting (also known as emesis, puking and throwing up) is the forceful expulsion of the contents of one's stomach through the mouth and sometimes the nose. Vomiting can be the result of ailments like food poisoning, gastroenteritis, pre ...

and delirium based hallucinations, are the same that of Eugenol and other GABAergic compounds. GABA positive allosteric site modulation is found in many sedative substances such as Methaqualone, Propofol, Alcohol (Ethanol) and Zolpidem. The properties of GABA positive modulating substances typically are anxiolytic,

anticonvulsant Anticonvulsants (also known as antiepileptic drugs, antiseizure drugs, or anti-seizure medications (ASM)) are a diverse group of pharmacological agents used in the treatment of epileptic seizures. Anticonvulsants are also used in the treatme ...

, oneirogenic,

sedative A sedative or tranquilliser is a substance that induces sedation by reducing irritability or Psychomotor agitation, excitement. They are central nervous system (CNS) Depressant, depressants and interact with brain activity, causing its decelera ...

hypnotic A hypnotic (from Ancient Greek, Greek ''Hypnos'', sleep), also known as a somnifacient or soporific, and commonly known as sleeping pills, are a class of psychoactive drugs whose primary function is to sleep induction, induce sleep and to trea ...

, euphoriant, and

muscle relaxant A muscle relaxant is a drug that affects skeletal muscle function and decreases the muscle tone. It may be used to alleviate symptoms such as muscle spasms, pain, and hyperreflexia. The term "muscle relaxant" is used to refer to two major therapeu ...

effects. In a study, 12 participants were given extracts of Calea ternifolia and experienced effects of mild augmentation of sensorial perceptions, imaginings, thought gaps, and retrieval problems;

lethargy Lethargy is a state of tiredness, sleepiness, weariness, fatigue, sluggishness, or lack of energy. It can be accompanied by depression, decreased motivation, or apathy. Lethargy can be a normal response to inadequate sleep, overexertion, overw ...

and a short sleep with vivid dreams.

Legal status

While it is not a controlled substance under federal law in the

United States The United States of America (USA), also known as the United States (U.S.) or America, is a country primarily located in North America. It is a federal republic of 50 U.S. state, states and a federal capital district, Washington, D.C. The 48 ...

, some states have considered it individually. Louisiana State Act 159 specifies that it is illegal to possess if it is intended for human consumption, but not if they are intended for ornamental or landscaping use.

Tennessee Tennessee (, ), officially the State of Tennessee, is a landlocked U.S. state, state in the Southeastern United States, Southeastern region of the United States. It borders Kentucky to the north, Virginia to the northeast, North Carolina t ...

proposed a bill that would have made this and many other plants classified as hallucinogenic illegal, but when the bill was passed only '' Salvia divinorum'' was banned.''Calea zacatechichi'' Legal Status
Erowid.org. Jun 20 2006. This plant was banned in

Poland Poland, officially the Republic of Poland, is a country in Central Europe. It extends from the Baltic Sea in the north to the Sudetes and Carpathian Mountains in the south, bordered by Lithuania and Russia to the northeast, Belarus and Ukrai ...

in March 2009. Under the Psychoactive Substances Act 2016 in the United Kingdom, Calea is technically illegal, however as the mechanisms are not well understood, it cannot be classed as a CNS stimulant or

depressant Depressants, also known as central nervous system depressants, or colloquially known as "downers", are drugs that lower neurotransmission levels, decrease the electrical activity of brain cells, or reduce arousal or stimulation in various ...

and is therefore legal.

Nephrotoxicity

One study suggest that the herb may have some toxic properties towards kidneys (

nephrotoxicity Nephrotoxicity is toxicity in the kidneys. It is a poisonous effect of some substances, both toxic chemicals and medications, on kidney function. There are various forms, and some drugs may affect kidney function in more than one way. Nephrotoxin ...

). This is likely due to the Caleicine in the plant being metabolised into the nephrotoxic compound Eugenol that can cause liver toxicity in high doses.

In popular culture

American composer David Woodard, who cultivated ''Calea ternifolia'' on his

San Francisco San Francisco, officially the City and County of San Francisco, is a commercial, Financial District, San Francisco, financial, and Culture of San Francisco, cultural center of Northern California. With a population of 827,526 residents as of ...

estate, composed a motet entitled "Calea Zacatechichi", which he recorded with a

Hispanic The term Hispanic () are people, Spanish culture, cultures, or countries related to Spain, the Spanish language, or broadly. In some contexts, Hispanic and Latino Americans, especially within the United States, "Hispanic" is used as an Ethnici ...

choir.Kerekes, D., ''Headpress 25: William Burroughs & the Flicker Machine'' (

Manchester Manchester () is a city and the metropolitan borough of Greater Manchester, England. It had an estimated population of in . Greater Manchester is the third-most populous metropolitan area in the United Kingdom, with a population of 2.92&nbs ...

: Headpress, 2003)
p. 34

References

{{Taxonbar, from=Q150607 ternifolia Flora of Mexico Flora of Central America Entheogens Herbal and fungal hallucinogens Medicinal plants of North America Oneirogens