History and culture of substituted amphetamines

Amphetamine and methamphetamine are both pharmaceutical drugs used to treat a variety of conditions, along with recreational drugs, which are colloquially known as "speed."[1] Amphetamine was first synthesized in 1887 in Germany by Romanian chemist Lazăr Edeleanu who named it phenylisopropylamine.[2][3][4] Shortly after, methamphetamine was synthesized from ephedrine in 1893 by Japanese chemist Nagai Nagayoshi.[5] Neither drug had a pharmacological use until 1934, when Smith, Kline and French began selling amphetamine as an inhaler under the trade name Benzedrine as a decongestant.[6]

During World War II, amphetamine and methamphetamine were used extensively by both the Allied and Axis forces for their stimulant and performance-enhancing effects.[4][7][8] Eventually, as the addictive properties of the drugs became known, governments began to place strict controls on the sale of the drugs.[4] For example, during the early 1970s in the United States, amphetamine became a schedule II controlled substance under the Controlled Substances Act.[9] Despite strict government controls, both amphetamine and methamphetamine have still been used legally or illicitly by individuals from a variety of backgrounds for different purposes.[10][11][12][13]

Due to the large underground market for these drugs, they are frequently illegally synthesized by clandestine chemists, trafficked, and sold on the black market.[14] Based upon drug and drug precursor seizures, illicit amphetamine production and trafficking is much less prevalent than that of methamphetamine.[14]

History of amphetamine and methamphetamine

Photograph of crystal meth
Crystal meth
A methamphetamine tablet container
Pervitin, a methamphetamine brand used by German soldiers during World War II, was dispensed in these tablet containers.
An advertisement for pharmaceutical methamphetamine
Obetrol, a pharmaceutical mixture of amphetamine and methamphetamine salts, was medically indicated and marketed for treating obesity, as illustrated in this advertisement from 1970.

Amphetamine was first synthesized in 1887 in Germany by Romanian chemist, Lazăr Edeleanu, who named the drug phenylisopropylamine.[4][15][16][17] This concoction was one of a series of compounds related to the plant derivative ephedrine, which had been isolated from the plant Ma-Huang (Ephedra) that same year by Nagayoshi Nagai.[18] Shortly after the first synthesis of amphetamine, Nagai synthesized methamphetamine from ephedrine in 1893.[5][19] In 1919, methamphetamine hydrochloride, also known as crystal meth, was synthesized by pharmacologist Akira Ogata via reduction of ephedrine using red phosphorus and iodine.[19] The sympathomimetic properties of amphetamine were unknown until 1927, when pioneer psychopharmacologist Gordon Alles independently resynthesized it and tested it on himself while searching for an artificial replacement for ephedrine.[16][20] At the time, Alles referred to the amphetamine compound as Benzedrine, a term derived from the name benzyl-methyl carbinamine.[21] In 1934, Smith, Kline and French made the first amphetamine pharmaceutical when they began selling a decongestant inhaler containing the volatile amphetamine free base under the trade name Benzedrine.[6][20] One of the first attempts at using amphetamine in a scientific study was done by M. Nathanson, a Los Angeles physician, in 1935.[22] He studied the subjective effects of amphetamine in 55 hospital workers who were each given 20 mg of Benzedrine.[22] The two most commonly reported drug effects were "a sense of well being and a feeling of exhilaration" and "lessened fatigue in reaction to work".[22]

During World War II, amphetamine and methamphetamine were used extensively by both the Allied and Axis forces for their stimulant and performance-enhancing effects.[4][7][8] In the 1950s, there was a rise in the legal prescription of methamphetamine to the American public.[19] Methamphetamine constituted half of the amphetamine salts for the original formulation for the diet drug Obetrol.[19] Methamphetamine was also marketed for sinus inflammation or for non-medicinal purposes as "pep pills" or "bennies".[19] A thriving black market in pep pills among long-haul truck drivers in the 1950s and 1960s, linked to long drive times and intense competitive pressures within the industry, contributed to federal efforts by the late 1960s to curtail non-medical use of the substance.[23]

Also in the 1950s, the Japanese Ministry of Health banned stimulant production, although drug companies continued to produce stimulants that wound up on the black market.[24] From 1951 to 1954, a series of acts were passed by the Japanese government to try to stop production and sale of stimulants;[24] however, the production and sale of stimulant drugs continued through criminal syndicates such as Yakuza criminal organizations.[24] On the streets, it is also known as S, Shabu, and Speed, in addition to its old trademarked name.[24] The United States in the 1960s saw the start of significant use of clandestinely manufactured methamphetamine, most of which was produced by motorcycle gangs.[24]

A notable part of the 1960s mod subculture in the UK was recreational amphetamine use, which was used to fuel all-night dances at clubs like Manchester's Twisted Wheel. Newspaper reports described dancers emerging from clubs at 5 a.m. with dilated pupils.[25] Mods used the drug for stimulation and alertness, which they viewed as different from the intoxication caused by alcohol and other drugs.[25] Dr. Andrew Wilson argues that for a significant minority, "amphetamines symbolised the smart, on-the-ball, cool image" and that they sought "stimulation not intoxication [...] greater awareness, not escape" and "confidence and articulacy" rather than the "drunken rowdiness of previous generations."[25] Wilson argues that the significance of amphetamines to the mod culture was similar to that of LSD and cannabis within the subsequent hippie counterculture. Dick Hebdige argues that mods used amphetamines to extend their leisure time into the early hours of the morning and as a way of bridging the gap between their hostile and daunting everyday work lives and the "inner world" of dancing and dressing-up in their off-hours.[26]

After decades of reported abuse, in 1965 the United States Food and Drug Administration (USFDA) banned Benzedrine inhalers, and limited amphetamine to prescription use, but non-medical use remained common.[4][16] Amphetamine became a schedule II controlled substance in the U.S. under the Controlled Substances Act in 1971.[9] That same year, the United Nations enacted the Convention on Psychotropic Substances, and amphetamine became a schedule II controlled substance, a highly restrictive category under the treaty.[27] By the 1990s, roughly 180 state parties were signatories to the treaty and consequently, it became heavily regulated in most countries.[27][28][29] Beginning in the 1990s in the United States, the production of methamphetamine in users' own homes for personal use became popular as well.[19]

In 1997 and 1998, researchers at Texas A&M University claimed to have found amphetamine and methamphetamine in the foliage of two Acacia species native to Texas, A. berlandieri and A. rigidula.[30][31] Previously, both of these compounds had been thought to be purely synthetic.[30][31][32] These findings have never been duplicated and consequently the validity of the report has come into question.[32]

Substituted amphetamine use has historically been especially common among Major League Baseball players and is usually known by the slang term "greenies".[33] In 2006, the MLB banned the use of amphetamine. The ban is enforced through periodic drug-testing. However, the MLB has received some criticism because the consequences for amphetamine use are dramatically less severe than for anabolic steroid use, with the first offense bringing only a warning and further testing.[34][35]

Methamphetamine was formerly in widespread use by truck drivers to combat symptoms of somnolence and to increase their concentration during driving, especially in the decades prior to the signing by former president Ronald Reagan of Executive Order 12564, which initiated mandatory random drug testing of all truck drivers and employees of other DOT-regulated industries.[36]

Up to a quarter of college students use Adderall to help them focus on their studies instead of its intended purpose of helping people with ADHD. This use sometimes continues after the student graduates college due to its addictive properties.[37]

As of 2015, amphetamines, especially Adderall, were increasingly being used by young white-collar workers who work long hours at demanding work. Many felt drug use was necessary to perform adequately.[38]

Military use

One of the earliest uses of amphetamine and methamphetamine was during World War II, when they were used by Axis and Allied forces.[39]

As early as 1919, Akira Ogata synthesized methamphetamine via reduction of ephedrine using red phosphorus and iodine. Later, the chemists Hauschild and Dobke from the German pharmaceutical company Temmler developed an easier method for converting ephedrine to methamphetamine. As a result, it was possible for Temmler to market it on a large scale as a nonprescription drug under the trade name Pervitin (methamphetamine hydrochloride). It was not until 1986 that Pervitin became a controlled substance, requiring a special prescription to obtain.[40] Pervitin was commonly used by the German and Finnish militaries.[39][41]

It was widely distributed across German military ranks and divisions, from elite forces to tank crews and aircraft personnel, with many millions of tablets being distributed throughout the war for its performance-enhancing stimulant effects and to induce extended wakefulness.[42] Its use by German Tank (Panzer) crews also led to it being known as Panzerschokolade ("Tank-Chocolates").[43][44] It was also colloquially known among German Luftwaffe pilots as Stuka-Tabletten ("Stuka-Tablets") and Hermann-Göring-Pillen ("Herman-Göring-Pills").[41] More than 35 million three-milligram doses of Pervitin were manufactured for the German army and air force between April and July 1940.[45] From 1942 until his death in 1945, Adolf Hitler was given intravenous injections of methamphetamine by his personal physician Theodor Morell. In Japan, methamphetamine was sold under the registered trademark of Philopon by Dainippon Pharmaceuticals (present-day Dainippon Sumitomo Pharma [DSP]) for civilian and military use.[46] It has been estimated that one billion Phiporon pills were produced between 1939 and 1945.[46] As with the rest of the world at the time, the side effects of methamphetamine were not well studied, and regulation was not seen as necessary. In the 1940s and 1950s, the drug was widely administered to Japanese industrial workers to increase their productivity.[47] In Finland, Pervitin was colloquially known as höökipulveri ("pep powder"). Its use was essentially restricted to special forces, especially to long-range commandos.

Amphetamine was given to Allied bomber pilots during World War II to sustain them by fighting-off fatigue and enhancing focus during long flights.[4][7] During the Persian Gulf War, amphetamine became the drug of choice for American bomber pilots, being used on a voluntary basis by roughly half of U.S. Air Force pilots.[48] The Tarnak Farm incident, in which an American F-16 pilot killed several friendly Canadian soldiers on the ground, was blamed by the pilot on his use of amphetamine.[49] A nonjudicial (UCMJ Article 15) U.S. Air Force hearing rejected the pilot's claim.[50]

Society and culture

In television

AMC's Breaking Bad, a crime drama series revolving around the large-scale illicit production of methamphetamine, has been lauded by critics and audiences alike for its realist approach to the portrayal of the international drug trade. It has also been called a "contemporary western" by series creator Vince Gilligan.[51]

In literature

The writers and poets of the Beat Generation used amphetamine extensively, mainly under the Benzedrine brand name. Jack Kerouac was a particularly avid user of amphetamine, which was said to provide him with the stamina needed to work on his novels for extended periods of time.[52]

In 1965, beat writer Allen Ginsberg, a member of the hippie counterculture, which was very critical of substituted amphetamines, did an interview with the Los Angeles Free Press[53] in which he commented that "Speed is antisocial, paranoid making, it's a drag... all the nice gentle dope fiends are getting screwed up by the real horror monster Frankenstein speed freaks who are going round stealing and bad-mouthing everybody".[53] However, he also acknowledged that he had used speed to stay up all night writing.[53]

Amphetamine is frequently mentioned in the work of American journalist Hunter S. Thompson. Speed not only appears among the inventory of drugs Thompson consumed for what could broadly be defined as recreational purposes but also receives frequent, explicit mention as an essential component of his writing toolkit,[54] such as in his "Author's Note" in Fear and Loathing on the Campaign Trail '72.[55]

One afternoon about three days ago [the publishers] showed up at my door with no warning, and loaded about forty pounds of supplies into the room: two cases of Mexican beer, four quarts of gin, a dozen grapefruits, and enough speed to alter the outcome of six Super Bowls. ... Meanwhile, [...] with the final chapter still unwritten and the presses scheduled to start rolling in twenty-four hours [...] unless somebody shows up pretty soon with extremely powerful speed, there might not be a final chapter. About four fingers of king-hell Crank would do the trick, but I am not optimistic.

Scottish author Irvine Welsh often portrays drug use in his novels, though in one of his journalism works he comments on how drugs (including amphetamine) have become part of consumerism and how his novels Trainspotting and Porno reflect the changes in drug use and culture during the years that elapsed between the two texts.[56]

In music

The northern soul and mod subcultures in England were known for their characteristic amphetamine use.[11] Their concerts generally involved people taking amphetamines to keep dancing all night. DJ Roger Eagle got out of the northern soul scene, saying: "All they wanted was fast-tempo black dance music... [but they were] too blocked on amphetamines to articulate exactly which Jackie Wilson record they wanted me to play."[57]

Many rock songs have been written about amphetamine. For example, in the track entitled "St. Ides Heaven" from singer/songwriter, Elliott Smith's self-titled album. Semi Charmed Life by Third Eye Blind also references amphetamine. Other examples include the song titled "Amphetamine" by Alternative rock band Everclear, another song called "Amphetamine" by Three Souls in My Mind,[58] the song "20 Dollar nose bleed" by the pop-rock band Fall Out Boy, and the song "Headfirst For Halos" by My Chemical Romance. It has influenced the aesthetics of many rock and roll bands (especially in the garage rock, mod R&B, death rock, punk/hardcore, gothic rock and extreme metal genres). Hüsker Dü, Jesus and Mary Chain and The Who were keen amphetamine users in their early existences. Hollywood Undead references the negative effects of substituted amphetamines in the song "City" from their album Swan Songs.

Primus's songs "On the Tweek again" and "Those Damned Blue-Collar Tweekers" directly reference widespread amphetamine use in rural America. Land Speed Record is an allusion to Hüsker Dü's amphetamine use. Amphetamine was widely abused in the 1980s underground punk-rock scene. Punk-rock band NOFX have incorporated references to amphetamines and other stimulants, the two most obvious being the song "Three on Speed" from the Surfer 8-inch LP (in reference to the three guys being on amphetamine while recording the album), and the album The Longest Line is in reference to a "line" of Amphetamine ready for insufflation.

The Rolling Stones referenced the drug in their song "Can't You Hear Me Knocking" on the album Sticky Fingers ("Y'all got cocaine eyes / Yeah, ya got speed-freak jive now"). Lou Reed refers explicitly to the drug on his album Berlin, in the song "How Do You Think It Feels?". Reed's band The Velvet Underground, a creation of Andy Warhol's Factory Years, was fueled by amphetamines, as well as naming their second album White Light/White Heat after the drug and making reference to it in "Sister Ray". The Pulp song "Sorted for E's & Wizz" refers to British slang terms for ecstasy and amphetamines. English gothic rock band The Sisters of Mercy refers to the drug in their song "Amphetamine Logic" from their first album, First and Last and Always, and their singer Andrew Eldritch is associated with amphetamine use. The Byrds referenced amphetamines in the 1968 song "Artificial Energy" on the album The Notorious Byrd Brothers.

Many rock and roll bands have named themselves after amphetamine and the drug slang and drug culture surrounding it. For example, Mod revivalists The Purple Hearts named themselves after the amphetamine tablets popular with mods during the 1960s, as did the Australian band of the same name during the mid-1960s. The Amphetameanies, a ska-punk band, are also named after amphetamine, but hint at its effects in their musical style. Dexys Midnight Runners, of number-one hit "Come On Eileen", are named after "dexies", a slang term for the amphetamine Dexedrine. Motörhead derived their name from the song of the same name by Ian "Lemmy" Kilmister's earlier band, Hawkwind; the song is about a user of speed, a "motorhead".

Danny Brown's album XXX contains many references to Adderall, such as the song "Adderall Admiral".

In film

Producer David O. Selznick, an amphetamine user, would often dictate long and rambling memos to his directors under the influence of amphetamine.[59] The documentary Shadowing The Third Man relates that Selznick introduced The Third Man director Carol Reed to the use of amphetamine, which allowed Reed to bring the picture in below budget and on schedule by filming nearly 22 hours at a time.[60]

The title of the 2009 movie Amphetamine plays on the double meaning of the word in Chinese. Besides the name for the drug, it also means "isn't this his fate? " which figuratively ties to the movie's plot. The word is transliterated as 安 非 他 命 – "ān fēi tā mìng" – and as commonly happens with transliteration of non-Chinese terms each character has independent meaning as an individual unrelated word.

In mathematics

Perhaps the most notable example of this is Paul Erdős, one of the most prolific and successful mathematicians in human history.[12] He took amphetamine and methylphenidate occasionally throughout his early career.[12][61] He began taking them daily at age 58, when a doctor prescribed them to him to allay the depression associated with his mother's death, and didn't stop until his death at age 83.[12][61] He would also sustain himself on copious amounts of coffee and caffeine pills.[12][61] Erdős took amphetamine despite the concern of his friends, one of whom (Ron Graham) bet him $500 that he could not stop taking the drug for a month.[12][61] Erdős won the bet, but complained:[61]

You've showed me I'm not an addict. But I didn't get any work done. I'd get up in the morning and stare at a blank piece of paper. I'd have no ideas, just like an ordinary person. You've set mathematics back a month.

He then promptly resumed his amphetamine use.[61]

Illicit drug culture

Addiction experts in psychiatry, chemistry, pharmacology, forensic science, epidemiology, and the police and legal services engaged in delphic analysis regarding 20 popular recreational drugs. Amphetamine was ranked 8th in dependence, 6th in physical harm, and 9th in social harm.[62]

Adderall in the video gaming industry

Adderall use in the video gaming industry has been receiving more and more attention in recent years. Many gamers have admitted to using it and have claimed that it has become a very widespread issue. Some gamers have even claimed that pills are regularly sold at professional tournaments. Adderall is peculiarly well suited to the medium, where victory depends on a competitor's alertness, ability to concentrate and hand-to-eye-coordination. As one StarCraft player wrote in 2011 on the game's official forums: "Adderall is basically a stimpack for gamers."[63]

The Electronic Sports League said that it would test players for performance-enhancing drugs starting at a tournament in August 2015. ESL said it would work with two international agencies – the same ones that help oversee anti-doping policies for cycling, the Olympics and other sports – to create anti-doping guidelines and a testing program for players. "We want to create a level playing field for all competitors and maintain the integrity of the sport," said James Lampkin, vice president of professional gaming at ESL. In addition to the ESL, Major League Gaming has spoken up. Bruce Dugan, a spokesman for Major League Gaming, said that the organization's policies prohibit the use of performance-enhancing drugs. However, the league has never conducted drug tests of its players. "Now that a lot of attention is being paid, it's something we'll look at for the 2016 season," spokesman Bruce Dugan said.[64]

Recreational use

Both amphetamine and methamphetamine are used recreationally as euphoriants and aphrodisiacs, with methamphetamine being the more common recreational drug due to precursor availability and relative ease to manufacture.[14][65] According to a National Geographic TV documentary on methamphetamine, "an entire subculture known as party and play is based around methamphetamine use."[65] Members of this San Francisco sub-culture, which consists almost entirely of homosexual male methamphetamine users, will typically meet up through internet dating sites and have sex.[65] Due to its strong stimulant and aphrodisiac effects and inhibitory effect on ejaculation, with repeated use, these sexual encounters will sometimes occur continuously for several days.[65] The crash following the use of methamphetamine in this manner is very often severe, with marked hypersomnia.[65]

Slang terms

One slang term for methamphetamine in Thailand and Myanmar is "ya ba"

Slang terms for methamphetamine, especially common among illicit users, are numerous and vary from region to region.[66] Some names are crystal meth, meth, speed, crystal, ice, shards, shabu or shaboo, side, glass, gak, jib, crank, batu, tweak, piko, rock, tina, fast, and cold.[66][67] Terms vary by region and subculture;[66] some of these regional and local names include: Philopon in East Asia, P in New Zealand, "ya ba" (Thai for "Crazy Medicine") in Thailand, bato (Filipino for rock or stone) in the Philippines, angel delight in Scotland and tik in South Africa.[66][67][68][69] Lastly, Vint, Russian for "a screw", refers to a very impure homemade form of methamphetamine in Russia.[70] In Thailand and Myanmar, ya ba pills have many slang terms, "WY",[69] such as "Athee" (Burmese for fruit), and "88". In Sweden tjack is a common slang term.[71]

Recreational routes of administration

The effects of methamphetamine are proportional to the rate at which the blood level of the drugs increases. Consequently, the administration route affects the risk for psychological dependence and addiction independently of other risk factors, such as dosage and frequency of use.[72] Intravenous injection is the fastest route of drug administration, causing blood concentrations to rise the most quickly, followed by smoking, use of a suppository (rectal or vaginal insertion), insufflation (snorting a powderized form), and ingestion (swallowing). While the onset of the rush induced by injection can occur in as little as a few seconds, the oral route of administration requires up to half an hour before the initial high sets in.[73]

Injection

Drug injection via intravenous administration, intramuscular administration, or subcutaneous administration carries relatively greater risks than other methods of administration. The doses used by recreational intravenous users vary widely, with a range of 1–200 times the doses used therapeutically (i.e., up to several grams).[74] Intravenous users risk developing pulmonary embolism (PE), a blockage of the main artery of the lung or one of its branches, and commonly develop skin rashes or infections at the site of injection. As with the injection of any drug, if a group of users share a common needle without sterilization procedures, blood-borne diseases, such as HIV or hepatitis, can be transmitted.[75] The level of needle sharing among methamphetamine users is similar to that among other drug-injection users.[75]

Smoking and insufflation
Glass pipe ("globe") used for smoking methamphetamine.

Smoking refers to vaporizing a drug and inhaling the resulting fumes; crystal methamphetamine (methamphetamine hydrochloride) and the free bases of amphetamine and methamphetamine are sufficiently volatile substances to allow them to be smoked. Crystal methamphetamine is commonly smoked in glass pipes, known as "bubbles", "globes", and "stems" (rose-stem water containers are often used as a makeshift pipe in urban populations). Lung disease has been reported in long-term methamphetamine smokers.[76] Ya ba (a pill containing caffeine and methamphetamine) smokers often use a technique in which a ya ba pill is placed on aluminium foil that is heated underneath with a lighter, in turn vaporizing the pill so that it can be inhaled through a heat-resistant pipe.[69] This method of administration is sometimes referred to as "chasing the dragon".

Crystal methamphetamine and salts of amphetamine are sometimes powdered and insufflated by recreational users, which results in a fairly rapid uptake of the drug through the nasal epithelium; with regular use, amphetamine or methamphetamine insufflation slowly damages and eventually destroys the nasal septum due to their causticity and vasoconstrictive effects.

Rectal and vaginal

Rectal administration and intravaginal administration are less-popular drug routes in the community with comparatively little research into their effects.[77] Information on their use is largely anecdotal with reports of increased sexual pleasure and the effects of the drug lasting longer,[78] though as methamphetamine is centrally active in the brain, these effects are likely experienced through the higher bioavailability of the drug in the bloodstream and the faster onset of action than many other routes of administration.[79] Nicknames for the routes of administration within some methamphetamine communities include a "butt rocket", a "booty bump", "potato thumping", "turkey basting", "plugging", "boofing", "suitcasing", "hooping", "keistering", "shafting", "bumming", and "shelving" (vaginal).[77]

Illegal synthesis

Illicitly synthesized crystal methamphetamine
Illicit industrial-scale methamphetamine and MDMA chemical factory (Cikande, Indonesia)
1 pound (0.45 kg) of methamphetamine found on a passenger at LA International Airport (LAX)

Methamphetamine is most structurally similar to methcathinone. Synthesis is relatively simple, but entails risk with flammable and corrosive chemicals, particularly the solvents used in extraction and purification. The six major routes of production begin with either phenyl-2-propanone (P2P) or with one of the isomeric compounds pseudoephedrine and ephedrine.[80]

One procedure uses the reductive amination of phenylacetone with methylamine,[81] P2P was usually obtained from phenylacetic acid and acetic anhydride,[82] and phenylacetic acid might arise from benzaldehyde, benzylcyanide, or benzylchloride.[83] Methylamine is crucial to all such methods, and is produced from the model airplane fuel nitromethane, or formaldehyde and ammonium chloride, or methyl iodide with hexamine.[84] This was once the preferred method of production by motorcycle gangs in California,[85] until DEA restrictions on the chemicals made the process difficult. Pseudoephedrine, ephedrine, phenylacetone, and phenylacetic acid are currently DEA list I and acetic anhydride is list II on the DEA list of chemicals subject to regulation and control measures. This method can involve the use of mercuric chloride and leaves behind mercury and lead environmental wastes.[86] The methamphetamine produced by this method is racemic, consisting partly of the less-desired levomethamphetamine isomer,[87] though separation of the two enantiomeric forms through selective recrystallization of the tartrate salt can occur in order to isolate the more active dextromethamphetamine.[88]

The alternative Leuckart route also relies on P2P to produce a racemic product, but proceeds via methylformamide in formic acid to an intermediate N-formyl-methamphetamine, which is then decarboxylated with hydrochloric acid.[80][83]

Illicit methamphetamine is more commonly made by the reduction of ephedrine or pseudoephedrine, which produces the more active d-methamphetamine isomer. The maximum conversion rate for ephedrine and pseudoephedrine is 92%, although typically, illicit methamphetamine laboratories convert at a rate of 50% to 75%.[89] Most methods of illicit production involve protonation of the hydroxyl group on the ephedrine or pseudoephedrine molecule.

Though dating back to the discovery of the drug, the Nagai route[90] did not become popular among illicit manufacturers until c.1982, and comprised 20% of production in Michigan in 2002.[91] It involves red phosphorus and hydrogen iodide (also known as hydroiodic acid or iohydroic acid). (The hydrogen iodide is replaced by iodine and water in the "Moscow route".)[92] The hydrogen iodide is used to reduce either ephedrine or pseudoephedrine to methamphetamine.[86] On heating, the precursor is rapidly iodinated by the hydrogen iodide to form iodoephedrine. The phosphorus assists in the second step, by consuming iodine to form phosphorus triiodide (which decomposes in water to phosphorous acid, regenerating hydrogen iodide). Because hydrogen iodide exists in a chemical equilibrium with iodine and hydrogen, the phosphorus reaction shifts the balance toward hydrogen production when iodine is consumed (see Le Châtelier's principle).[93] In Australia, criminal groups have been known to substitute "red" phosphorus with either hypophosphorous acid or phosphorous acid (the "Hypo route").[92][94][95] This is a hazardous process for amateur chemists because phosphine gas, a side-product from in situ hydrogen iodide production,[96] is extremely toxic to inhale. The reaction can also create toxic, flammable white phosphorus waste.[86] Methamphetamine produced in this way is usually more than 95% pure.[97]

The conceptually similar Emde route involves reduction of ephedrine to chloroephedrine using thionyl chloride (SOCl2), followed by catalytic hydrogenation. The catalysts for this reaction are palladium or platinum.[80][98] The Rosenmund route also uses hydrogen gas and a palladium catalyst poisoned with barium sulfate (Rosenmund reduction), but uses perchloric acid instead of thionyl chloride.[83]

The Birch reduction, also called the "Nazi method", became popular in the mid-to-late 1990s and comprised the bulk of methamphetamine production in Michigan in 2002.[91] It reacts pseudoephedrine with liquid anhydrous ammonia and an alkali metal such as sodium or lithium. The reaction is allowed to stand until the ammonia evaporates.[99] However, the Birch reduction is dangerous because the alkali metal and ammonia are both extremely reactive, and the temperature of liquid ammonia makes it susceptible to explosive boiling when reactants are added. It has been the most popular method in Midwestern states of the U.S. because of the ready availability of liquid ammonia fertilizer in farming regions.[86][100]

In recent years, a simplified "Shake 'n Bake" one-pot synthesis has become more popular. The method is suitable for such small batches that pseudoephedrine restrictions are less effective, it uses chemicals that are easier to obtain (though no less dangerous than traditional methods), and it is so easy to carry out that some addicts have made the drug while driving.[101] It involves placing crushed pseudoephedrine tablets into a nonpressurized container containing ammonium nitrate, water, and a hydrophobic solvent such as Coleman fuel[102] or automotive starting fluid, to which lye and lithium (from lithium batteries) is added. Hydrogen chloride gas produced by a reaction of salt with sulfuric acid is then used to recover crystals for purification. The container needs to be "burped" periodically to prevent failure under accumulating pressure, as exposure of the lithium to the air can spark a flash fire.[102] The battery lithium can react with water to shatter a container and potentially start a fire or explosion.[102]

Illegal laboratories

Waste left behind from a methamphetamine lab

Short-term exposure to high concentrations of chemical vapors that exist in black-market methamphetamine laboratories can cause severe health problems and death.[103] Exposure to these substances can occur from volatile air emissions, spills, fires, and explosions.[103] Such methamphetamine labs are sometimes discovered when emergency personnel respond to fires due to improper handling of volatile or flammable materials.[103][104] Single-pot "shake and bake" syntheses are particularly prone to explode and ignite, and, when abandoned, still pose a severe hazard to firefighters.[104]

Methamphetamine cooks, their families, and first responders are at high risk of experiencing acute health effects from chemical exposure, including lung damage and chemical burns to the body.[103][105] After the seizure of a methamphetamine lab, a low exposure risk to chemical residues often exists, but this contamination can be sanitized.[105] Chemical residues and lab wastes that are left behind at a former methamphetamine lab can cause severe health problems for people who use the property.[105]

Impurities and adulterants

In Japan, methamphetamine seizures are usually white crystals of high purity, but contain impurities that vary according to the means of production, and are sometimes adulterated.

Diagnostic impurities are the naphthalenes 1-benzyl-methylnaphthalene and 1,3-dimethyl-2-phenylnaphthalene,[93] arising in the Nagai and Leuckart routes, and cis- or trans- 1,2-dimethyl-3-phenylaziridine, ephedrine, or erythro-3,4-dimethyl- 5-phenyloxazolidine, arising in the Nagai and Emde routes; these are absent in the reductive amination route.[83] Characteristic impurities of the Birch route include N-methyl-1-(1-(1,4-cyclohexadienyl))-2-propanamine.[99] Methamphetamine produced by the Birch route contains phenyl-2-propanone, the precursor for the reductive amination route, as a degradation product.[93] However, specific diagnostic impurities are not very reliable in practice, and it is generally preferable for forensic technicians to evaluate a larger profile of trace compounds.[80]

A common adulterant is dimethyl sulfone, a solvent and cosmetic base without known effect on the nervous system; other adulterants include dimethylamphetamine HCl, ephedrine HCl, sodium thiosulfate, sodium chloride, sodium glutamate, and a mixture of caffeine with sodium benzoate.[92]

In the United States, illicit methamphetamine comes in a variety of forms with prices varying widely over time.[106] Most commonly, it is found as a colorless crystalline solid. Impurities may result in a brownish or tan color. Colorful flavored pills containing methamphetamine and caffeine are known as ya ba (Thai for "crazy medicine").

An impure form of methamphetamine is sold as a crumbly brown or off-white rock, commonly referred to as "peanut butter crank".[107] It may be diluted or cut with non-psychoactive substances like inositol, isopropylbenzylamine or dimethylsulfone. Another popular method is to combine methamphetamine with other stimulant substances, such as caffeine or cathine, into a pill known as a "Kamikaze", which can be particularly dangerous due to the synergistic effects of multiple stimulants. Reports in 2007 of the appearance of flavored "Strawberry Quik meth" circulated in the media and local law enforcement,[108] but were debunked in 2010 by the DEA, although meth of varying colors has been seized.[109]

Rarely, the impure reaction mixture from the hydrogen iodide/red phosphorus route is used without further modification, usually by injection; it is called "ox blood".[99] "Meth oil" refers to the crude methamphetamine base produced by several synthesis procedures. Ordinarily it is purified by exposure to hydrogen chloride, as a solution or as a bubbled gas, and extraction of the resulting salt occurs by precipitation and/or recrystallization with ether/acetone.[99]

Trafficking and distribution

Until the early 1990s, the U.S. market for methamphetamine was supplied mostly by labs run by drug traffickers in both Mexico and California.[110] As of 2007, drug and lab seizure data suggests that approximately 80% of the methamphetamine used in the United States originates from larger laboratories operated by Mexican-based syndicates on both sides of the border;[110] approximately 20 percent comes from small toxic labs (STLs) in the United States.[110] The 2006 National Drug Threat Assessment, produced by the Department of Justice, found "decreased domestic methamphetamine production in both small and large-scale laboratories."[111] It also noted a decline in domestic methamphetamine manufacture which was replaced by an increase in illicit Mexican production.[111]

As of October 2015, the Sinaloa Cartel is the most active drug cartel involved in smuggling methamphetamine and other illicit drugs into the United States and trafficking wholesale quantities throughout the United States.[112]

See also

Notes and references

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  2. ↑ Lazăr Edeleano: Über einige Derivate der Phenylmethacrylsäure und der Phenylisobuttersäure. In: Berichte der Deutschen chemischen Gesellschaft zu Berlin; 20. Jg. (1887), Band 3, S. 616–622. doi:10.1002/cber.188702001142
  3. ↑ Rassool GH (2009). Alcohol and Drug Misuse: A Handbook for Students and Health Professionals. London: Routledge. p. 113. ISBN 978-0-203-87117-1.
  4. 1 2 3 4 5 6 7 "Historical overview of methamphetamine". Vermont Department of Health. Government of Vermont. Retrieved 29 January 2012.
  5. 1 2 Grobler, Sias R.; Chikte, Usuf; Westraat, Jaco (2011). "The pH Levels of Different Methamphetamine Drug Samples on the Street Market in Cape Town". ISRN Dentistry. 2011: 1–4. PMC 3189445 Freely accessible. PMID 21991491. doi:10.5402/2011/974768.
  6. 1 2 Rasmussen N (July 2006). "Making the first anti-depressant: amphetamine in American medicine, 1929–1950". J. Hist. Med. Allied Sci. 61 (3): 288–323. PMID 16492800. doi:10.1093/jhmas/jrj039. SKF first packaged it as an inhaler so as to exploit the base's volatility and, after sponsoring some trials by East Coast otolaryngological specialists, began to advertise the Benzedrine Inhaler as a decongestant in late 1933.
  7. 1 2 3 Rasmussen N (2011). "Medical science and the military: the Allies' use of amphetamine during World War II". J. Interdiscip. Hist. 42 (2): 205–233. PMID 22073434. doi:10.1162/JINH_a_00212.
  8. 1 2 Defalque RJ, Wright AJ (April 2011). "Methamphetamine for Hitler's Germany: 1937 to 1945". Bull. Anesth. Hist. 29 (2): 21–4, 32. PMID 22849208. doi:10.1016/s1522-8649(11)50016-2.
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  11. 1 2 Wilson, Andrew (2008). "Mixing the Medicine: The Unintended Consequence of Amphetamine Control on the Northern Soul Scene" (PDF). The Internet Journal of Criminology. SSRN 1339332 Freely accessible.
  12. 1 2 3 4 5 6 Hill J (4 June 2004). "Paul Erdos, Mathematical Genius, Human (In That Order)" (PDF). untruth.org. Retrieved 2 November 2013.
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    Physiologic and performance effects
     • Amphetamines increase dopamine/norepinephrine release and inhibit their reuptake, leading to central nervous system (CNS) stimulation
     • Amphetamines seem to enhance athletic performance in anaerobic conditions 39 40
     • Improved reaction time
     • Increased muscle strength and delayed muscle fatigue
     • Increased acceleration
     • Increased alertness and attention to task
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