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{{Main|Nootropic|Designer drug|Psychoactive drug}}
{{Main|Nootropic|Designer drug|Psychoactive drug}}
{{See also|Modafinil}}
{{See also|Modafinil}}
[[Nootropic]]s, also commonly referred to as "smart drugs", are drugs that are claimed to improve human [[cognition|cognitive abilities]]. Nootropics are used to improve memory, concentration, thought, mood, and learning. An increasingly used nootropic among students, also known as a ''study drug'', is [[methylphenidate]] branded commonly as ''Ritalin'' and used for the treatment of [[attention deficit hyperactivity disorder]] (ADHD) and [[narcolepsy]].<ref name=Abelman>{{Cite journal|last=Abelman|first=D|date=6 October 2017|title=Mitigating risks of students use of study drugs through understanding motivations for use and applying harm reduction theory: a literature review|journal=Harm Reduct J|volume=14|issue=1|pages=68|pmid=28985738|pmc=5639593|doi=10.1186/s12954-017-0194-6|doi-access=free}}</ref> At high doses methylphenidate [[Methylphenidate#Biomolecular mechanisms|can become highly addictive]].<ref name=Smith>{{Cite journal|last1=Smith|first1=M|last2=Farah|first2=M|date=September 2011|title=Are prescription stimulants "smart pills"? The epidemiology and cognitive neuroscience of prescription stimulant use by normal healthy individuals.|journal=Psychol. Bull.|volume=137|issue=5|pages=717–41|doi=10.1037/a0023825|pmid=21859174|pmc=3591814}}</ref> Serious addiction can lead to [[psychosis]], [[anxiety]] and heart problems, and the use of this drug is related to a rise in suicides, and overdoses. Evidence for use outside of student settings is limited but suggests that it is commonplace.<ref name=Abelman/><ref name=Smith/> Intravenous use of methylphenidate can lead to [[Pneumatosis#Pulmonary emphysema|emphysematous]] damage to the lungs, known as ''[[Ritalin lung]]''.<ref>{{Cite web|url=https://radiopaedia.org/articles/ritalin-lung?lang=gb|title=Ritalin lung|last=Sharma|first=R|website=Radiopedia.org|access-date=1 July 2019|archive-date=30 July 2020|archive-url=https://web.archive.org/web/20200730042833/https://radiopaedia.org/articles/ritalin-lung?lang=gb|url-status=live}}</ref>
[[Nootropic]]s, also commonly referred to as "smart drugs", are drugs that are claimed to improve human [[cognition|cognitive abilities]]. Nootropics are used to improve memory, concentration, thought, mood, and learning. An increasingly used nootropic among students, also known as a ''study drug'', is [[methylphenidate]] branded commonly as ''Ritalin'' and used for the treatment of [[attention deficit hyperactivity disorder]] (ADHD) and [[narcolepsy]].<ref name=Abelman>{{Cite journal|last=Abelman|first=D|date=6 October 2017|title=Mitigating risks of students use of study drugs through understanding motivations for use and applying harm reduction theory: a literature review|journal=Harm Reduct J|volume=14|issue=1|pages=68|pmid=28985738|pmc=5639593|doi=10.1186/s12954-017-0194-6|doi-access=free}}</ref> At high doses methylphenidate [[Methylphenidate#Biomolecular mechanisms|can become highly addictive]].<ref name=Smith>{{Cite journal|last1=Smith|first1=M|last2=Farah|first2=M|date=September 2011|title=Are prescription stimulants "smart pills"? The epidemiology and cognitive neuroscience of prescription stimulant use by normal healthy individuals.|journal=Psychol. Bull.|volume=137|issue=5|pages=717–41|doi=10.1037/a0023825|pmid=21859174|pmc=3591814}}</ref> Serious addiction can lead to [[psychosis]], [[anxiety]] and heart problems, and the use of this drug is related to a rise in suicides, and overdoses. Evidence for use outside of student settings is limited but suggests that it is commonplace.<ref name=Abelman/><ref name=Smith/> Intravenous use of methylphenidate can lead to [[Pneumatosis#Pulmonary emphysema|emphysematous]] damage to the lungs, known as ''[[Ritalin lung]]''.<ref>{{Cite web|url=https://radiopaedia.org/articles/ritalin-lung?lang=gb|title=Ritalin lung|last=Sharma|first=R|website=Radiopedia.org|access-date=1 July 2019|archive-date=30 July 2020|archive-url=https://web.archive.org/web/20200730042833/https://radiopaedia.org/articles/ritalin-lung?lang=gb|url-status=live}}</ref>


Other drugs known as [[designer drug]]s are produced. An early example of what today would be labelled a 'designer drug' was [[Lysergic acid diethylamide|LSD]], which was synthesised from [[ergot]].<ref>{{Cite web|url=http://chemistryhall.com/probably-not-know-discovery-synthesis-lsd/|title=Discovery And Synthesis Of LSD: What You Probably Did Not Know About It - Chemistry Hall|date=2017-06-13|access-date=2017-06-13|url-status= dead|archive-url=https://web.archive.org/web/20170613040001/http://chemistryhall.com/probably-not-know-discovery-synthesis-lsd/|archive-date=2017-06-13}}</ref> Other examples include analogs of [[performance-enhancing drugs]] such as designer [[steroids]] taken to improve physical capabilities and these are sometimes used (legally or not) for this purpose, often by professional athletes.<ref name="pmid22191595">{{cite journal | vauthors = Teale P, Scarth J, Hudson S | title = Impact of the emergence of designer drugs upon sports doping testing | journal = Bioanalysis | volume = 4 | issue = 1 | pages = 71–88 | year = 2012 | pmid = 22191595 | doi = 10.4155/bio.11.291 }}</ref> Other designer drugs mimic the effects of psychoactive drugs. Since the late 1990s there has been the identification of many of these synthesised drugs. In Japan and the United Kingdom this has spurred the addition of many designer drugs into a newer class of controlled substances known as a [[temporary class drug]].
Other drugs known as [[designer drug]]s are produced. An early example of what today would be labelled a 'designer drug' was [[Lysergic acid diethylamide|LSD]], which was synthesised from [[ergot]].<ref>{{Cite web|url=http://chemistryhall.com/probably-not-know-discovery-synthesis-lsd/|title=Discovery And Synthesis Of LSD: What You Probably Did Not Know About It - Chemistry Hall|date=2017-06-13|access-date=2017-06-13|url-status= dead|archive-url=https://web.archive.org/web/20170613040001/http://chemistryhall.com/probably-not-know-discovery-synthesis-lsd/|archive-date=2017-06-13}}</ref> Other examples include analogs of [[performance-enhancing drugs]] such as designer [[steroids]] taken to improve physical capabilities and these are sometimes used (legally or not) for this purpose, often by professional athletes.<ref name="pmid22191595">{{cite journal | vauthors = Teale P, Scarth J, Hudson S | title = Impact of the emergence of designer drugs upon sports doping testing | journal = Bioanalysis | volume = 4 | issue = 1 | pages = 71–88 | year = 2012 | pmid = 22191595 | doi = 10.4155/bio.11.291 }}</ref> Other designer drugs mimic the effects of psychoactive drugs. Since the late 1990s there has been the identification of many of these synthesised drugs. In Japan and the United Kingdom this has spurred the addition of many designer drugs into a newer class of controlled substances known as a [[temporary class drug]].

Revision as of 14:59, 14 January 2024

This article is about drugs in general. For illegal drugs, see Illegal drug trade. For other uses, see Drug (disambiguation).

Uncoated aspirin tablets, consisting of about 90% acetylsalicylic acid, along with a minor amount of inert fillers and binders. Aspirin is a pharmaceutical drug often used to treat pain, fever, and inflammation.

A drug is any chemical substance that when consumed causes a change in an organism's physiology, including its psychology, if applicable.[1][2][vague] Drugs are typically distinguished from food and other substances that provide nutritional support. Consumption of drugs can be via inhalation, injection, smoking, ingestion, absorption via a patch on the skin, suppository, or dissolution under the tongue.

In pharmacology, a drug is a chemical substance, typically of known structure, which, when administered to a living organism, produces a biological effect.[3] A pharmaceutical drug, also called a medication or medicine, is a chemical substance used to treat, cure, prevent, or diagnose a disease or to promote well-being.[1] Traditionally drugs were obtained through extraction from medicinal plants, but more recently also by organic synthesis.[4] Pharmaceutical drugs may be used for a limited duration, or on a regular basis for chronic disorders.[1]

Pharmaceutical drugs are often classified into drug classes—groups of related drugs that have similar chemical structures, the same mechanism of action (binding to the same biological target), a related mode of action, and that are used to treat the same disease.[5][6] The Anatomical Therapeutic Chemical Classification System (ATC), the most widely used drug classification system, assigns drugs a unique ATC code, which is an alphanumeric code that assigns it to specific drug classes within the ATC system. Another major classification system is the Biopharmaceutics Classification System. This classifies drugs according to their solubility and permeability or absorption properties.[7]

Psychoactive drugs are substances that affect the function of the central nervous system, altering perception, mood or consciousness.[8] These drugs are divided into different groups like: stimulants, depressants, antidepressants, anxiolytics, antipsychotics, and hallucinogens. These psychoactive drugs have been proven useful in treating wide range of medical conditions including mental disorders around the world. The most widely used drugs in the world include caffeine, nicotine and alcohol,[9] which are also considered recreational drugs, since they are used for pleasure rather than medicinal purposes.[10] All drugs can have potential side effects.[11] Abuse of several psychoactive drugs can cause addiction and/or physical dependence.[12] Excessive use of stimulants can promote stimulant psychosis. Many recreational drugs are illicit and international treaties such as the Single Convention on Narcotic Drugs exist for the purpose of their prohibition.

Etymology

In English, the noun "drug" is thought to originate from Old French "drogue", possibly deriving from "droge (vate)" from Middle Dutch meaning "dry (barrels)", referring to medicinal plants preserved as dry matter in barrels.[13][14]

In the 1990s however, Spanish lexicographer Federico Corriente Córdoba documented the possible origin of the word in {ḥṭr}[15] an early romanized form of Al-Andalus language from Northwestern part of the Iberian peninsula.[16] The term could approximately be transcribed as حطروكة or hatruka.[17]

Medication

Main articles: Pharmaceutical drug, Drug class, and Medication
Nexium (Esomeprazole) is a proton-pump inhibitor. It is used to reduce the production of stomach acid.

A medication or medicine is a drug taken to cure or ameliorate any symptoms of an illness or medical condition. The use may also be as preventive medicine that has future benefits but does not treat any existing or pre-existing diseases or symptoms. Dispensing of medication is often regulated by governments into three categories—over-the-counter medications, which are available in pharmacies and supermarkets without special restrictions; behind-the-counter medicines, which are dispensed by a pharmacist without needing a doctor's prescription, and prescription only medicines, which must be prescribed by a licensed medical professional, usually a physician.[18]

In the United Kingdom, behind-the-counter medicines are called pharmacy medicines which can only be sold in registered pharmacies, by or under the supervision of a pharmacist. These medications are designated by the letter P on the label.[19] The range of medicines available without a prescription varies from country to country. Medications are typically produced by pharmaceutical companies and are often patented to give the developer exclusive rights to produce them. Those that are not patented (or with expired patents) are called generic drugs since they can be produced by other companies without restrictions or licenses from the patent holder.[20]

Pharmaceutical drugs are usually categorised into drug classes. A group of drugs will share a similar chemical structure, or have the same mechanism of action, the same related mode of action or target the same illness or related illnesses.[5][6] The Anatomical Therapeutic Chemical Classification System (ATC), the most widely used drug classification system, assigns drugs a unique ATC code, which is an alphanumeric code that assigns it to specific drug classes within the ATC system. Another major classification system is the Biopharmaceutics Classification System. This groups drugs according to their solubility and permeability or absorption properties.[7]

Spiritual and religious use

Main articles: Entheogen and Psychonaut
An Amazonian shaman
San Pedro, a psychoactive cactus.

Some religions, particularly ethnic religions, are based completely on the use of certain drugs, known as entheogens, which are mostly hallucinogens,—psychedelics, dissociatives, or deliriants. Some drugs used as entheogens include kava which can act as a stimulant, a sedative, a euphoriant and an anesthetic. The roots of the kava plant are used to produce a drink which is consumed throughout the cultures of the Pacific Ocean.

Some shamans from different cultures use entheogens, defined as "generating the divine within"[21] to achieve religious ecstasy. Amazonian shamans use ayahuasca (yagé) a hallucinogenic brew for this purpose. Mazatec shamans have a long and continuous tradition of religious use of Salvia divinorum a psychoactive plant. Its use is to facilitate visionary states of consciousness during spiritual healing sessions.[22]

Silene undulata is regarded by the Xhosa people as a sacred plant and used as an entheogen. Its roots are traditionally used to induce vivid (and according to the Xhosa, prophetic) lucid dreams during the initiation process of shamans, classifying it a naturally occurring oneirogen similar to the more well-known dream herb Calea ternifolia.[23]

Peyote, a small spineless cactus, has been a major source of psychedelic mescaline and has probably been used by Native Americans for at least five thousand years.[24][25] Most mescaline is now obtained from a few species of columnar cacti in particular from San Pedro and not from the vulnerable peyote.[26]

The entheogenic use of cannabis has also been widely practised[27] for centuries.[28] Rastafari use marijuana (ganja) as a sacrament in their religious ceremonies.

Psychedelic mushrooms (psilocybin mushrooms), commonly called magic mushrooms or shrooms have also long been used as entheogens.

Smart drugs and designer drugs

Main articles: Nootropic, Designer drug, and Psychoactive drug
See also: Modafinil

Nootropics, also commonly referred to as "smart drugs", are drugs that are claimed to improve human cognitive abilities. Nootropics are used to improve memory, concentration, thought, mood, and learning. An increasingly used nootropic among students, also known as a study drug, is methylphenidate branded commonly as Ritalin and used for the treatment of attention deficit hyperactivity disorder (ADHD) and narcolepsy.[29] At high doses methylphenidate can become highly addictive.[30] Serious addiction can lead to psychosis, anxiety and heart problems, and the use of this drug is related to a rise in suicides, and overdoses. Evidence for use outside of student settings is limited but suggests that it is commonplace.[29][30] Intravenous use of methylphenidate can lead to emphysematous damage to the lungs, known as Ritalin lung.[31]

Other drugs known as designer drugs are produced. An early example of what today would be labelled a 'designer drug' was LSD, which was synthesised from ergot.[32] Other examples include analogs of performance-enhancing drugs such as designer steroids taken to improve physical capabilities and these are sometimes used (legally or not) for this purpose, often by professional athletes.[33] Other designer drugs mimic the effects of psychoactive drugs. Since the late 1990s there has been the identification of many of these synthesised drugs. In Japan and the United Kingdom this has spurred the addition of many designer drugs into a newer class of controlled substances known as a temporary class drug.

Synthetic cannabinoids have been produced for a longer period of time and are used in the designer drug synthetic cannabis.

Recreational drug use

Main article: Recreational drug use
Further information: Prohibition of drugs
Cannabis is a commonly used recreational drug.[34]

Recreational drug use is the use of a drug (legal, controlled, or illegal) with the primary intention of altering the state of consciousness through alteration of the central nervous system in order to create positive emotions and feelings. The hallucinogen LSD is a psychoactive drug commonly used as a recreational drug.[35]

Ketamine is a drug used for anesthesia, and is also used as a recreational drug, both in powder and liquid form, for its hallucinogenic and dissociative effects.[36]

Some national laws prohibit the use of different recreational drugs; and medicinal drugs that have the potential for recreational use are often heavily regulated. However, there are many recreational drugs that are legal in many jurisdictions and widely culturally accepted. Cannabis is the most commonly consumed controlled recreational drug in the world (as of 2012).[37] Its use in many countries is illegal but is legally used in several countries usually with the proviso that it can only be used for personal use. It can be used in the leaf form of marijuana (grass), or in the resin form of hashish. Marijuana is a more mild form of cannabis than hashish.

There may be an age restriction on the consumption and purchase of legal recreational drugs. Some recreational drugs that are legal and accepted in many places include alcohol, tobacco, betel nut, and caffeine products, and in some areas of the world the legal use of drugs such as khat is common.[38]

There are a number of legal intoxicants commonly called legal highs that are used recreationally. The most widely used of these is alcohol.

Administration of drugs

Main article: Route of administration

All drugs, can be administered via a number of routes, and many can be administered by more than one.

Control of drugs

Main articles: Prohibition of drugs and Drug policy

Numerous governmental offices in many countries deal with the control and supervision of drug manufacture and use, and the implementation of various drug laws. The Single Convention on Narcotic Drugs is an international treaty brought about in 1961 to prohibit the use of narcotics save for those used in medical research and treatment. In 1971, a second treaty the Convention on Psychotropic Substances had to be introduced to deal with newer recreational psychoactive and psychedelic drugs.

The legal status of Salvia divinorum varies in many countries and even in states within the United States. Where it is legislated against the degree of prohibition also varies.

The Food and Drug Administration (FDA) in the United States is a federal agency responsible for protecting and promoting public health through the regulation and supervision of food safety, tobacco products, dietary supplements, prescription and over-the-counter medications, vaccines, biopharmaceuticals, blood transfusions, medical devices, electromagnetic radiation emitting devices, cosmetics, animal foods[40] and veterinary drugs.

In India, the Narcotics Control Bureau (abbr. NCB), an Indian federal law enforcement and intelligence agency under the Ministry of Home Affairs, Government of India is tasked with combating drug trafficking and assisting international use of illegal substances under the provisions of Narcotic Drugs and Psychotropic Substances Act.[41]

See also

Lists of drugs

References

  1. ^ a b c "Drug". Drug Definition & Meaning. The American Heritage Science Dictionary. Houghton Mifflin Company. Archived from the original on 14 September 2007. Retrieved 20 September 2007 – via dictionary.com.
  2. ^ "Drug Definition". Stedman's Medical Dictionary. Archived from the original on 2014-05-02. Retrieved 2014-05-01 – via Drugs.com.
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  30. ^ a b Smith, M; Farah, M (September 2011). "Are prescription stimulants "smart pills"? The epidemiology and cognitive neuroscience of prescription stimulant use by normal healthy individuals". Psychol. Bull. 137 (5): 717–41. doi:10.1037/a0023825. PMC 3591814. PMID 21859174.
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  33. ^ Teale P, Scarth J, Hudson S (2012). "Impact of the emergence of designer drugs upon sports doping testing". Bioanalysis. 4 (1): 71–88. doi:10.4155/bio.11.291. PMID 22191595.
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Further reading

  • Richard J. Miller (2014). Drugged: the science and culture behind psychotropic drugs. Oxford University Press. ISBN 978-0-19-995797-2.
  • DrugBank, a database of 13,400 drugs and 5,100 protein drug targets
  • "Drugs", BBC Radio 4 discussion with Richard Davenport-Hines, Sadie Plant and Mike Jay (In Our Time, May 23, 2002)
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