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Crack stem : ウィキペディア英語版
Crack cocaine

Crack cocaine is the freebase form of cocaine that can be smoked. It may also be termed rock, work, hard, iron, cavvy, base, but is most commonly known as just crack; the Manual of Adolescent Substance Abuse Treatment calls it the most addictive form of cocaine.〔''Manual of Adolescent Substance Abuse Treatment'', Todd Wilk Estroff, M.D., 2001 (306 pages), pp. 44-45, (describes cocaine/crack processing & melting points): p.44 has "cannot be smoked because...melting point of 190°C"; p.45 has "It is the most addictive form of cocaine", webpage: 〕 Crack rocks offer a short but intense high to smokers.〔Stacy O'Brien, ''Red Deer Advocate'', December 2008, (Officials warn of life-threatening cocaine in area ).〕 Crack first saw widespread use in primarily impoverished inner city neighborhoods in New York, Los Angeles, and Miami in late 1984 and 1985; the rapid increase in use and availability is referred to as the crack epidemic.〔

==Recreational use==

Crack cocaine is commonly used as a recreational drug. Effects of crack cocaine include euphoria,〔 supreme confidence,〔 loss of appetite,〔 insomnia,〔 alertness,〔 increased energy,〔 a craving for more cocaine,〔
''White Mischief: A Cultural History of Cocaine'',
Tim Madge, 2004, ISBN 1-56025-370-3, link:
.

and potential paranoia (ending after use).〔
"DEA, Drug Information, Cocaine",
United States DOJ Drug Enforcement Administration, 2008, webpage:
(DEA-cocaine ).
〕〔
"Life or Meth - CRACK OF THE 90'S",
Salt Lake City Police Department, Utah, 2008, PDF file:
(Methlife-PDF ).

Its initial effect is to release a large amount of dopamine,〔''A.M. Costa Rica'', July 2008, (Crack rocks offer a short but intense high to smokers ).〕 a brain chemical inducing feelings of euphoria. The high usually lasts from 5–10 minutes,〔〔 after which time dopamine levels in the brain plummet, leaving the user feeling depressed and low.〔 When (powder) cocaine is dissolved and injected, the absorption into the bloodstream is at least as rapid as the absorption of the drug which occurs when crack cocaine is smoked,〔 and similar euphoria may be experienced.

抄文引用元・出典: フリー百科事典『 ウィキペディア(Wikipedia)
ウィキペディアで「Crack cocaine」の詳細全文を読む



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