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|Sir Thomas Lauder Brunton|
|Known for||Treatment of angina pectoris|
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Poppers is a slang term given to the chemical class called alkyl nitrites that are inhaled for recreational purposes, especially as an aphrodisiac. Today poppers are mainly sold in cap vials but historically received the names "poppers", "boppers", and "snappers" from the sound of snapping off the neck of glass ampoules to release their vapors.
Widely sold concentrated products are the pioneer amyl nitrite (isoamyl nitrite, isopentyl nitrite), cyclohexyl nitrite, isobutyl nitrite (2-methylpropyl nitrite), and isopropyl nitrite (2-propyl nitrite). Isopropyl nitrite went popular due to ban of isobutyl nitrite in EU 2007. More rarely sold are butyl nitrite.
Amyl nitrite, manufactured by Burroughs Wellcome (now GlaxoSmithKline) and Eli Lilly and Company, was originally sold in small glass ampoules that were crushed to release their vapors, and received the name "poppers" and "snappers" as a result of the popping sound made by crushing the ampoule.
|Sir Thomas Lauder Brunton|
|Known for||Treatment of angina pectoris|
In 1844, the French chemist Antoine Jérôme Balard synthesized amyl nitrite. Sir Thomas Lauder Brunton (March 14, 1844–September 16, 1916), a Scottish physician, famously pioneered the use of amyl nitrite to treat angina pectoris (now treated with nitroglycerin). Brunton's clinical use of amyl nitrite to treat angina was inspired by earlier work with the same reagent by Arthur Gamgee and Benjamin Ward Richardson. Brunton reasoned that the pain and discomfort of angina could be reduced by administering amyl nitrite to dilate the coronary arteries of patients, thus improving blood flow to the heart muscle.
Time and the Wall Street Journal reported that the popper fad began among homosexual men as a way to enhance sexual pleasure, but "quickly spread to avant-garde heterosexuals" as a result of aggressive marketing. A series of interviews conducted in the late 1970s revealed a wide spectrum of users, including construction workers, a "trendy East Side NYC couple" at a "chic NYC nightclub", a Los Angeles businesswoman "in the middle of a particularly hectic public-relations job" (who confided to the reporter that "I could really use a popper now"), and frenetic disco dancers amid "flashing strobe lights and the pulsating beat of music in discos across the country."
The first few members of the series are volatile liquids; methyl nitrite and ethyl nitrite are gaseous at room temperature and pressure. Organic nitrites are prepared from alcohols and sodium nitrite in sulfuric acid solution. They decompose slowly on standing, the decomposition products being oxides of nitrogen, water, the alcohol, and polymerization products of the aldehyde.
(Sutton, 1963 for amyl nitrite, butyl nitrite, isobutyl nitrite):
|Alkyl nitrite||CAS||Formula||Molecular weight (g·mol−1)||Physical state||Boiling point (°C)||Specific gravity|
|Amyl nitrite (isoamyl nitrite, isopentyl nitrite)||110-46-3||(CH3)2CHCH2CH2ONO||117.15||Transparent liquid||97–99||0.872|
|Butyl nitrite||544-16-1||CH3(CH2)2CH2ONO||103.12||Oily liquid||78.2||0.9144 (0/4 °C)|
|Isobutyl nitrite (2-methylpropyl nitrite)||542-56-3||(CH3)2CHCH2ONO||103.12||Colorless liquid||67||0.8702 (20/20 °C)|
|Isopropyl nitrite (2-propyl nitrite)||541-42-4||(CH3)2CHONO||89.09||Clear pale yellow oil||39 °C at 760 mmHg|
The light alkyl nitrites cause the formation of methemoglobin wherein, as an effective antidote to cyanide poisoning, the methemoglobin combines with the cyanide to form nontoxic cyanmethemoglobin. First responders typically carry a cyanide poison kit containing amyl nitrite, such as the popular Taylor Pharmaceutical Cyanide Antidote Kit.
It has been incorrectly suggested that poppers have been related to AIDS, HIV infection, and the AIDS-related cancer Kaposi's sarcoma. Initially poppers were considered as a hypothesis for the then-burgeoning AIDS epidemic, and the idea has persisted in large part due to the activities of AIDS denialists as a pseudoscientific rationalization for the presence of AIDS in homosexual males.
The dose administered can easily be determined by subtracting the weight of a small vial after inhalation from its weight before inhalation, using an accurate scale. Two-cm vial openings, now being more common, are broad enough to cover the nostrils; smaller vial necks distribute lower doses.
Inhaling nitrites relaxes smooth muscles throughout the body  Smooth muscle surrounds the body's blood vessels and when relaxed causes these vessels to dilate resulting in an immediate decrease in blood pressure.
User surveys are hard to come by, but a 1988 study found that 69% of men who had sex with men in the Baltimore/Washington DC area reported they had used poppers, with 21% having done so in the prior year. The survey also found that 11% of recreational drug users in the area reported using poppers, increasing to 22% among "heavy abusers," with an average age of first use of 25.6 years old. Both survey groups used poppers to "get high," but the men who had sex with men were more likely to use them during sex. It was reported that this group reduced usage following the AIDS epidemic, while the drug-users had not. A 1987 study commissioned by the US Senate and conducted by the Department of Health and Human Services found that less than 3% of the overall population had ever used poppers.
Use by minors is historically minimal due, in part, to the ban on sales to minors by major manufacturers for public relations reasons and because some jurisdictions regulate sales to minors by statute. A paper published in 2005 examined use of poppers self-reported by adolescents aged 12–17 in the (American) 2000 and 2001 National Household Surveys on Drug Abuse. In all, 1.5% of the respondents in this age group reported having used poppers. This figure rose to 1.8% in those over 14. Living in nonmetropolitan areas, having used mental health services in the past year (for purposes unconnected with substance use treatment), the presence of delinquent behaviours, past year alcohol and drug abuse and dependence, and multi-drug use were all associated with reporting the use of poppers.
The Merck Manual of Diagnosis and Therapy reports that there is little evidence of significant hazard associated with inhalation of alkyl nitrites. A study and ranking of drugs for harmfulness devised by British-government advisers and based upon scientific evidence of harm to both individuals and society showed that poppers pose little potential harm to individuals or to society when compared to other recreational drugs including alcohol and tobacco.
An overdose via ingestion (rather than inhalation) may result in cyanosis, unconsciousness, coma and even death. Methylene blue is a treatment for methemoglobinemia associated with popper use. Accidental aspiration of amyl or butyl nitrites may lead to the development of lipoid pneumonia.
Poppers are a possible and rare cause of concern of in a small number of cases of maculopathy (eye damage) in recent case reports from UK and France. Some studies have concluded that there may be increased risk for at least temporary retinal damage with habitual popper use in certain users; In a letter to the New England Journal of Medicine, an ophthalmologist described four cases in which recreational users of poppers experienced temporary changes in vision. Another study described foveal (daylight vision) damage in six habitual poppers users.
In France, the sale of products containing butyl nitrite, pentyl nitrite, or isomers thereof, has been prohibited since 1990 on grounds of danger to consumers. In 2007, the government extended this prohibition to all alkyl nitrites that were not authorized for sale as drugs. After litigation by sex shop owners, this extension was quashed by the Council of State on the grounds that the government had failed to justify such a blanket prohibition: according to the court, the risks cited, concerning rare accidents often following abnormal usage, rather justified compulsory warnings on the packaging.
In the United Kingdom, poppers are widely available and frequently (legally) sold in gay clubs/bars, sex shops, drug paraphernalia head shops, over the Internet and on markets. It is illegal under Medicines Act 1968 to sell them advertised for human consumption, and in order to bypass this, they are usually sold as odorizers.
In the U.S., originally marketed as a prescription drug in 1937, amyl nitrite remained so until 1960, when the Food and Drug Administration removed the prescription requirement due to its safety record. This requirement was reinstated in 1969, after observation of an increase in recreational use.