Caffeine: Difference between revisions
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imported>Howard C. Berkowitz (added class of methylxanthines (links) and fixed typo in citation) |
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'''Caffeine''', contained in [[coffee]] and other drinks, is a mild stimulant and "is the most widely used psychoactive drug in the world."<ref name="isbn0-07-142280-3">{{cite book |author=O'Brien, Charles |authorlink= |editor=Keith Parker; Laurence Brunton; Goodman, Louis Sanford; Lazo, John S.; Gilman, Alfred |others= |title=Goodman & Gilman's The Pharmacological Basis of Therapeutics |edition=11th |chapter=Chapter 23. Drug | '''Caffeine''', contained in [[coffee]] and other drinks, is a mild stimulant and "is the most widely used psychoactive drug in the world."<ref name="isbn0-07-142280-3">{{cite book |author=O'Brien, Charles |authorlink= |editor=Keith Parker; Laurence Brunton; Goodman, Louis Sanford; Lazo, John S.; Gilman, Alfred |others= |title=Goodman & Gilman's The Pharmacological Basis of Therapeutics |edition=11th |chapter=Chapter 23. Drug Addiction and Drug Abuse |chapterurl= |language= |publisher=McGraw-Hill |location=New York |year=2006 |origyear= |pages= |quote= |isbn=0-07-142280-3 |oclc= |doi= |url=http://www.accessmedicine.com/resourceTOC.aspx?resourceID=28 |accessdate=}}</ref> It is a member of the class of [[methylxanthine]]s, also containing [[theophylline]], [[theobromine]], and [[aminophylline]], which have similar but not identical actions (e.g., relatively more or less stimulation and bronchodilation). | ||
Cessation of caffeine intake can lead to withdrawal symptoms.<ref name="pmid1528206">{{cite journal |author=Silverman K, Evans SM, Strain EC, Griffiths RR |title=Withdrawal syndrome after the double-blind cessation of caffeine consumption |journal=The New England journal of medicine |volume=327 |issue=16 |pages=1109–14 |year=1992 |month=October |pmid=1528206 |doi= |url= |issn=}}</ref> | Cessation of caffeine intake can lead to withdrawal symptoms.<ref name="pmid1528206">{{cite journal |author=Silverman K, Evans SM, Strain EC, Griffiths RR |title=Withdrawal syndrome after the double-blind cessation of caffeine consumption |journal=The New England journal of medicine |volume=327 |issue=16 |pages=1109–14 |year=1992 |month=October |pmid=1528206 |doi= |url= |issn=}}</ref> | ||
Revision as of 12:45, 10 October 2008
Caffeine, contained in coffee and other drinks, is a mild stimulant and "is the most widely used psychoactive drug in the world."[1] It is a member of the class of methylxanthines, also containing theophylline, theobromine, and aminophylline, which have similar but not identical actions (e.g., relatively more or less stimulation and bronchodilation).
Cessation of caffeine intake can lead to withdrawal symptoms.[2]
Pharmacology
Caffeine competitively antagonizes adenosine receptors. This antagonism prevents adenosine's inhibition of intracellular cyclic AMP. Cyclic AMP is a second messenger that increases sympathetic stimulation and increases norepinephrine and dopamine release[1]
References
- ↑ 1.0 1.1 O'Brien, Charles (2006). “Chapter 23. Drug Addiction and Drug Abuse”, Keith Parker; Laurence Brunton; Goodman, Louis Sanford; Lazo, John S.; Gilman, Alfred: Goodman & Gilman's The Pharmacological Basis of Therapeutics, 11th. New York: McGraw-Hill. ISBN 0-07-142280-3. Cite error: Invalid
<ref>tag; name "isbn0-07-142280-3" defined multiple times with different content - ↑ Silverman K, Evans SM, Strain EC, Griffiths RR (October 1992). "Withdrawal syndrome after the double-blind cessation of caffeine consumption". The New England journal of medicine 327 (16): 1109–14. PMID 1528206. [e]