Para-Methoxyamphetamine

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para-Methoxyamphetamine (PMA), also known as 4-methoxyamphetamine (4-MA), is a designer drug of the amphetamine class with serotonergic effects.<ref>Drug Enforcement Administration October 2000. The Hallucinogen PMA: Dancing With Death Template:Webarchive</ref><ref name="Alexander & Ann Shulgin, PiHKAL #97">Template:Cite book</ref><ref name="salna">Template:Cite news</ref> Unlike other similar drugs of this family, PMA does not produce stimulant, euphoriant, or entactogen effects,<ref name="pmid1539067">Template:Cite journal</ref> and behaves more like an antidepressant in comparison,<ref>Template:Cite journal</ref> though it does have some psychedelic properties.<ref name="pmid7617822">Template:Cite journal</ref><ref name="pmid6546992">Template:Cite journal</ref>

PMA has been found in tablets touted as MDMA (ecstasy)<ref name="ecstasydata">{{#invoke:citation/CS1|citation |CitationClass=web }}</ref><ref name="fake-ecstasy-warning-die-scotland">Template:Cite news</ref><ref name=Barrell2015>Template:Cite news</ref><ref name="pmid9760094">Template:Cite journal</ref> although its effects are markedly different compared to those of MDMA. The consequences of such deception have often included hospitalization and death for unwitting users. PMA is commonly synthesized from anethole, the flavor compound of anise and fennel, mainly because the starting material for MDMA, safrole, has become less available due to law enforcement action, causing illicit drug manufacturers to use anethole as an alternative.<ref>Template:Cite journal</ref>

EffectsEdit

According to Alexander Shulgin in PiHKAL, the effects of PMA at doses of 50 to 80Template:Nbspmg included hypertension, diethyltryptamine (DET)-reminiscent effects, distinct after-images, and some paresthesia, "intoxication" or alcohol-like intoxication, and no psychedelic effects.<ref name="Alexander & Ann Shulgin, PiHKAL #97" /><ref name="ShulginManningDaley2011">Template:Cite book</ref> In clinical studies, PMA produced "excitation, other central effects, and sympathomimetic effects, but similarly no psychotomimetic effects.<ref name="ShulginManningDaley2011" /> Animal studies suggested that PMA would have partial psychedelic effects, but this did not seem to prove true in humans.<ref name="ShulginManningDaley2011" /> PMA only partially substituted for the psychostimulant amphetamine in drug discrimination tests.<ref name="ShulginManningDaley2011" /><ref name="Glennon2017" /> It did not substitute for MDMA in rodents, suggesting lack of entactogenic effects.<ref name="Glennon2017" />

Adverse effectsEdit

PMA has been associated with numerous adverse reactions including death.<ref>Template:Cite journal</ref><ref>Template:Cite journal</ref> Effects of PMA ingestion include many effects of the hallucinogenic amphetamines including accelerated and irregular heartbeat, blurred vision, and a strong feeling of intoxication that is often unpleasant. At high doses unpleasant effects such as nausea and vomiting, severe hyperthermia and hallucinations may occur. The effects of PMA also seem to be much more unpredictable and variable between individuals than those of MDMA, and sensitive individuals may die from a dose of PMA by which a less susceptible person might only be mildly affected.<ref>Template:Cite journal</ref> While PMA alone may cause significant toxicity, the combination of PMA with MDMA has a synergistic effect that seems to be particularly hazardous.<ref>Template:Cite journal</ref> Since PMA has a slow onset of effects, several deaths have occurred where individuals have taken a pill containing PMA, followed by a pill containing MDMA some time afterwards due to thinking that the first pill was not active.<ref>Template:Cite journal</ref>

OverdoseEdit

PMA overdose can be a serious medical emergency that may occur at only slightly above the usual recreational dose range, especially if PMA is mixed with other stimulant drugs such as cocaine or MDMA. Characteristic symptoms are pronounced hyperthermia, tachycardia, and hypertension, along with agitation, confusion, and convulsions. PMA overdose also tends to cause hypoglycaemia and hyperkalaemia, which can help to distinguish it from MDMA overdose. Complications can sometimes include more serious symptoms such as rhabdomyolysis and cerebral hemorrhage, requiring emergency surgery. There is no specific antidote, so treatment is symptomatic, and usually includes both external cooling, and internal cooling via IV infusion of cooled saline. Benzodiazepines are used initially to control convulsions, with stronger anticonvulsants such as phenytoin or thiopental used if convulsions continue. Blood pressure can be lowered either with a combination of alpha blockers and beta blockers (or a mixed alpha/beta blocker), or with other drugs such as nifedipine or nitroprusside. Serotonin antagonists and dantrolene may be used as required. Despite the seriousness of the condition, the majority of patients survive if treatment is given in time, however, patients with a core body temperature over 40 °C at presentation tend to have a poor prognosis.<ref name="pmid12733852">Template:Cite journal</ref>

PharmacologyEdit

PharmacodynamicsEdit

Template:Nowrap
Compound Template:Abbrlink Template:Abbrlink Template:Abbrlink Ref
d-Amphetamine 698–1,765 6.6–7.2 5.8–24.8 <ref name="RothmanBaumannDersch2001">Template:Cite journal</ref><ref name="BaumannPartillaLehner2013">Template:Cite journal</ref>
d-Methamphetamine 736–1,292 12.3–13.8 8.5–24.5 <ref name="RothmanBaumannDersch2001" /><ref name="BaumannAyestasPartilla2012">Template:Cite journal</ref>
2-Methoxyamphetamine Template:Abbr 473 1,478 <ref name="Blough2008">Template:Cite book</ref>
3-Methoxyamphetamine Template:Abbr 58.0 103 <ref name="Blough2008" />
para-Methoxyamphetamine (PMA) Template:Abbr 166 867 <ref name="Blough2008" /><ref name="Vekariya2012">Template:Cite thesis</ref>
Template:Abbrlink Template:Abbr Template:Abbr Template:Abbr Template:Abbr
Template:NbspTemplate:Nbsp(S)-PMMA 41 147 1,000 <ref name="Glennon2017">Template:Cite journal</ref><ref name="GlennonYoung2011">Template:Cite book</ref><ref name="Vekariya2012" />
Template:NbspTemplate:Nbsp(R)-PMMA 134 >14,000 1,600 <ref name="Glennon2017" /><ref name="GlennonYoung2011" /><ref name="Vekariya2012" />
4-Methylamphetamine (4-MA) 53.4 22.2 44.1 <ref name="WeeAndersonBaumann2005">Template:Cite journal</ref><ref name="Forsyth2012">Template:Cite journal</ref><ref name="Blough2008" />
4-Methylmethamphetamine (4-MMA) 67.4 66.9 41.3 <ref name="SolisPartillaSakloth2017">Template:Cite journal</ref><ref name="Sakloth2015">Template:Cite thesis</ref>
para-Chloroamphetamine (PCA) 28.3 23.5–26.2 42.2–68.5 <ref name="Forsyth2012" /><ref name="Blough2008" /><ref name="FitzgeraldGannonWalther2024">Template:Cite journal</ref><ref name="Nicole2022">Template:Cite thesis</ref>
para-Chloromethamphetamine (PCMA) 29.9 36.5 54.7 <ref name="FitzgeraldGannonWalther2024" /><ref name="Nicole2022" />
Methedrone (4-MeO-MC) 120–195 111 506–881 <ref name="BaumannWaltersNiello2018">Template:Cite journal</ref><ref name="BloughDeckerLandavazo2019">Template:Cite journal</ref><ref name="Shalabi2017">Template:Cite thesis</ref><ref name="WaltherShalabiBaumann2019">Template:Cite journal</ref><ref name="BonanoBanksKolanos2015">Template:Cite journal</ref>
Mephedrone (4-MMC) 118.3–122 58–62.7 49.1–51 <ref name="BaumannAyestasPartilla2012" /><ref name="BaumannPartillaLehner2013" /><ref name="BloughDeckerLandavazo2019" /><ref name="WaltherShalabiBaumann2019" /><ref name="BonanoBanksKolanos2015" />
Notes: The smaller the value, the more strongly the drug releases the neurotransmitter. The assays were done in rat brain synaptosomes and human potencies may be different. See also Monoamine releasing agent § Activity profiles for a larger table with more compounds. Refs: <ref name="RothmanBaumann2003">Template:Cite journal</ref><ref name="RothmanBaumann2006">Template:Cite journal</ref>

PMA acts as a selective serotonin releasing agent (SSRA) with weak effects on dopamine and norepinephrine transporters.<ref name="pmid946817">Template:Cite journal</ref><ref name="pmid5132700">Template:Cite journal</ref><ref name="pmid1271280">Template:Cite journal</ref><ref name="SimmlerRickliHoener2014">Template:Cite journal</ref> Its Template:Abbrlink values for induction of monoamine release are 166Template:NbspnM for dopamine and 867Template:NbspnM for norepinephrine in rat brain synaptosomes, whereas serotonin was not reported.<ref name="Blough2008"/><ref name="Vekariya2012" /> The drug has been found to robustly increase brain serotonin levels and to weakly increase brain dopamine levels in rodents in vivo.<ref name="MatsumotoMaenoKato2014">Template:Cite journal</ref> Relative to MDMA, PMA appears to be considerably less effective as a releaser of serotonin, with properties more akin to a serotonin reuptake inhibitor in comparison.<ref name="pmid11041537">Template:Cite journal</ref>

PMA has also been shown to act as a potent monoamine oxidase inhibitor (MAOI), specifically as a reversible inhibitor of the enzyme monoamine oxidase A (MAO-A) with no significant effects on monoamine oxidase B (MAO-B).<ref name="pmid6103055">Template:Cite journal</ref><ref name="pmid6646243">Template:Cite journal</ref> The Template:Abbrlink of PMA for MAO-A inhibition has been reported to be 300 to 600Template:NbspnM.<ref name="Reyes-ParadaIturriaga-VasquezCassels2019">Template:Cite journal</ref>

PMA shows very low affinities for the serotonin 5-HT1A, 5-HT2A, and 5-HT2C receptors.<ref name="SimmlerRickliHoener2014"/> Its affinities for these receptors have been reported to be >20,000Template:NbspnM, 11,200Template:NbspnM, and >13,000Template:NbspnM, respectively.<ref name="SimmlerRickliHoener2014" /> On the other hand, PMA shows much higher affinities for the mouse and rat trace amine-associated receptor 1 (TAAR1).<ref name="SimmlerRickliHoener2014" />

PMA evokes robust hyperthermia in rodents while producing only modest hyperactivity and serotonergic neurotoxicity, substantially lower than that caused by MDMA, and only at very high doses.<ref name="pmid5132700"/><ref name="pmid1271280"/><ref name="pmid11041537"/> Accordingly, it is not self-administered by rodents unlike amphetamine and MDMA.<ref name="pmid1539067"/> Anecdotal reports by humans suggest it is not particularly euphoric at all, perhaps even dysphoric in contrast.Template:Citation needed

It appears that PMA elevates body temperatures dramatically; the cause of this property is suspected to be related to its ability to inhibit MAO-A and at the same time releasing large amounts of serotonin, effectively causing serotonin syndrome.<ref name="pmid11041537"/><ref name="pmid6646243"/> Amphetamines, especially serotonergic analogues such as MDMA, are strongly contraindicated to take with MAOIs. Many amphetamines and adrenergic compounds raise body temperatures, whereas some tend to produce more euphoric activity or peripheral vasoconstriction, and may tend to favor one effect over another. It appears that PMA activates the hypothalamus much more strongly than MDMA and other drugs like ephedrine, thereby causing rapid increases in body temperature (which is the major cause of death in PMA mortalities).<ref>Template:Cite journal</ref><ref>Template:Cite journal</ref><ref>Template:Cite journal</ref> Many people taking PMA try to get rid of the heat by taking off their clothes, taking cold showers or wrapping themselves in wet towels, and even sometimes by shaving off their hair.<ref>Template:Cite journal</ref>

HistoryEdit

PMA first came into circulation in the early 1970s, where it was used intentionally as a substitute for the hallucinogenic properties of LSD.<ref name="Alexander & Ann Shulgin, PiHKAL #97"/> It went by the street names of "Chicken Powder" and "Chicken Yellow" and was found to be the cause of a number of drug overdose deaths (the dosages taken being in the range of hundreds of milligrams) in the United States and Canada from that time.<ref>{{#invoke:citation/CS1|citation |CitationClass=web }}</ref> Between 1974 and the mid-1990s, there appear to have been no known fatalities from PMA.<ref>Template:Cite journal</ref>

Several deaths reported as MDMA-induced in Australia in the mid-1990s are now considered to have been caused by PMA, the users unaware that they were ingesting PMA and not MDMA as they had intended.<ref name="pmid9760094" /> There have been a number of PMA-induced deaths around the world since then.<ref name="pmid15274949">Template:Cite journal</ref><ref name="pmid18393753">Template:Cite journal</ref>

In July 2013, seven deaths in Scotland were linked to tablets containing PMA that had been mis-sold as ecstasy and which had the Rolex crown logo on them.<ref name="fake-ecstasy-warning-die-scotland" /> Several deaths in Northern Ireland, Particularly East Belfast were also linked to "Green Rolex" pills during that month.<ref>Template:Cite news</ref>

In 2014, 2015 and early 2016, PMA sold as ecstasy was the cause of more deaths in the United States, United Kingdom, Netherlands, and Argentina. The pills containing the drug were reported to be red triangular tablets with a "Superman" logo.<ref name=Barrell2015/><ref>{{#invoke:citation/CS1|citation |CitationClass=web }}</ref><ref>{{#invoke:citation/CS1|citation |CitationClass=web }}</ref><ref>Template:Cite news</ref>

The Red Ferarri pills are a new press of the Superman logo tablets that were reported to be found in Germany and Norway from 2016 to 2017.<ref>{{#invoke:citation/CS1|citation |CitationClass=web }}</ref>

Society and cultureEdit

Legal statusEdit

InternationalEdit

PMA is a Schedule I drug under the Convention on Psychotropic Substances.<ref>{{#invoke:citation/CS1|citation |CitationClass=web }}</ref>

AustraliaEdit

PMA is considered a Schedule 9 prohibited substance in Australia under the Poisons Standard (October 2015).<ref name="Poisons Standard">Poisons Standard October 2015 https://www.comlaw.gov.au/Details/F2015L01534 Template:Webarchive</ref> A Schedule 9 substance is a substance which may be abused or misused, the manufacture, possession, sale or use of which should be prohibited by law except when required for medical or scientific research, or for analytical, teaching or training purposes with approval of Commonwealth and/or State or Territory Health Authorities.<ref name="Poisons Standard" />

FinlandEdit

Substance is scheduled in decree of the government on amending the government decree on substances, preparations and plants considered to be narcotic drugs.<ref>{{#invoke:citation/CS1|citation |CitationClass=web }}</ref><ref>{{#invoke:citation/CS1|citation |CitationClass=web }}</ref>

GermanyEdit

PMA is part of the Appendix 1 of the Betäubungsmittelgesetz. Therefore, owning and distribution of PMA is illegal.

NetherlandsEdit

On 13 June 2012 Edith Schippers, Dutch Minister of Health, Welfare and Sport, revoked the legality of PMA in the Netherlands after five deaths were reported in that year.<ref>{{#invoke:citation/CS1|citation |CitationClass=web }}</ref>

United KingdomEdit

PMA is a Class A drug in the UK.<ref>{{#invoke:citation/CS1|citation |CitationClass=web }}</ref>

United StatesEdit

PMA is classified as a Schedule I hallucinogen under the Controlled Substances Act in the United States.<ref>21 CFR 1308.11 Template:Webarchive</ref>

EconomicsEdit

DistributionEdit

Because PMA is given out through the same venues and distribution channels that MDMA tablets are, the risk of being severely injured, hospitalized or even dying from use of ecstasy increases significantly when a batch of ecstasy pills containing PMA starts to be sold in a particular area.<ref>Template:Cite journal</ref> PMA pills could be a variety of colours or imprints, and there is no way of knowing just from the appearance of a pill what drug(s) it might contain.<ref>{{#invoke:citation/CS1|citation |CitationClass=web }}</ref><ref>{{#invoke:citation/CS1|citation |CitationClass=web }}</ref> Notable batches of pills containing PMA have included Louis Vuitton,<ref>Chamberlin T, Murray D. NET Syndicated QLD News 'Louis Vuitton' designer death drug hits the streets Template:Webarchive</ref> Mitsubishi Turbo, Blue Transformers, Red/Blue Mitsubishi and Yellow Euro pills. Also PMA has been found in powder form.<ref>Template:Cite journal</ref>

AnaloguesEdit

Four analogues of PMA have been reported to be sold on the black market, including PMMA, PMEA,<ref>Template:Cite journal</ref> 4-ETA and 4-MTA. These are the N-methyl, N-ethyl, 4-ethoxy and 4-methylthio analogues of PMA, respectively. PMMA and PMEA are anecdotally weaker, more "ecstasy-like" and somewhat less dangerous than PMA itself, but can still produce nausea and hyperthermia similar to that produced by PMA, albeit at slightly higher doses. 4-EtOA was briefly sold in Canada in the 1970s, but little is known about it.<ref name="Alexander & Ann Shulgin, PiHKAL #97"/> 4-MTA, however, is even more dangerous than PMA and produces strong serotonergic effects and intense hyperthermia, but with little to no euphoria, and was implicated in several deaths in the late 1990s.

See alsoEdit

ReferencesEdit

Template:Reflist

External linksEdit

Template:Sister project

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