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students wishing to study through the night, or revellers seeking to maintain an alert attitude during social recreation. Caffeine can cause a physical dependence, if consumed in excessive amounts. The need for caffeine can be identified when individuals feel headaches, fatigue and muscle pain 24 hours after their last energy drink.
220:, other beverages. According to a 2020 study in the United States, coffee is the major source of caffeine intake in middle-aged adults, while soft drinks and tea are the major sources in adolescents. Energy drinks are more commonly consumed as a source of caffeine in adolescents as compared to adults.
270:
Tea leaves contain more caffeine than coffee beans by dry weight. A typical serving, however, contains much less, since less of the product is used as compared to an equivalent serving of coffee. Also contributing to caffeine content are growing conditions, processing techniques, and other variables.
179:
The consumption of caffeinated drinks is often intended entirely or partly for the physical and mental effects of caffeine. Examples include the consumption of tea or coffee with breakfast in many westernized societies, in order to 'wake oneself up', or the deliberate consumption of energy drinks by
444:
David, Iulia
Gabriela; Bizgan, Ana-Maria Cristina; Buleandra, Mihaela; Popa, Dana Elena; Moldovan, Zenovia; Bandea, Irinel Adriana (April 2015). "Rapid determination of total polyphenolic content in tea samples based on caffeic acid voltammetric behaviour on a disposable graphite electrode".
241:
and the method of preparation used; even beans within a given bush can show variations in concentration. In general, one serving of coffee ranges from 80 to 100 milligrams, for a single shot (30 milliliters) of arabica-variety
971:
164:, which in one form or another (usually served hot, but sometimes iced) feature in most world cultures. Other drinks are artificially caffeinated as part of their production process. These include certain
581:
Benson, Sarah; Verster, Joris C.; Alford, Chris; Scholey, Andrew (November 2014). "Effects of mixing alcohol with caffeinated beverages on subjective intoxication: A systematic review and meta-analysis".
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or from chemical synthesis. Guarana, a prime ingredient of energy drinks, contains large amounts of caffeine with small amounts of theobromine and theophylline in a naturally occurring
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variety. In general, dark-roast coffee has very slightly less caffeine than lighter roasts because the roasting process reduces caffeine content of the bean by a small amount.
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334:, can start at 80 milligrams of caffeine per serving. The caffeine in these drinks either originates from the ingredients used or is an additive derived from the product of
361:, pouring hot but not boiling water over the leaves, and drinking with a straw, the bombilla, which acts as a filter so as to draw only the liquid and not the yerba leaves.
282:
than coffee. Preparation and many other factors have a significant impact on tea, and color is a very poor indicator of caffeine content. Teas like the pale
Japanese
480:
Gimba, Casimir
Emmanuel; Abechi, Stephen Eyije; Abbas, Nurudeen Sulaiman (2014). "Evaluation of caffeine, aspartame and sugar contents in energy drinks".
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is a tea-like drink popular in many parts of South
America. Its preparation consists of filling a gourd with the leaves of the South American holly
194:
Many caffeinated drinks also have decaffeinated counterparts, for those who enjoy the taste, but wish to limit their caffeine intake because of its
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1105:
832:
499:
Rockett, Ian R.H.; Putnam, Sandra L. (February 2002). "Caffeine "Addiction" in High School Youth: Evidence of an
Adverse Health Relationship".
404:. The amount of caffeine in these beverages can vary widely. Caffeine concentrations can differ significantly from the manufacturer's claims.
563:
Bempong DK, Houghton PJ, Steadman K (1993). "The xanthine content of guarana and its preparations". Int. J. Pharmacog. 31 (3): 175–81.
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Desbrow B (2012). "An examination of consumer exposure to caffeine from commercial coffee and coffee-flavoured milk".
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Hicks MB, Hsieh YH, Bell LN (1996). "Tea preparation and its influence on methylxanthine concentration".
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designed as a stimulant, and to perpetuate activity at times when the user might ordinarily be asleep.
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326:. Soft drinks typically contain 0 to 55 milligrams of caffeine per 12 ounce serving. By contrast,
237:), from which coffee is brewed. Caffeine content in coffee varies widely depending on the type of
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that is legal practically all over the world. Some are naturally caffeinated while others have
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The
Encyclopedia of Psychoactive Plants: Ethnopharmacology and Its Applications
380:, the Ecuadorian holly tree, are placed in boiling water to make a guayusa tea.
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The world's primary source of caffeine is the coffee "bean" (the seed of the
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In recent years, some alcoholic beverage companies have begun to manufacture
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van Dam RM, Hu FB, Willett WC (July 2020). "Coffee, Caffeine, and Health".
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389:, the yaupon holly tree, are placed in boiling water to make a yaupon tea.
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Beverages containing caffeine include coffee, tea, soft drinks ("colas"),
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Tea (left) and coffee, the two most common naturally caffeinated drinks
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292:, for example, contain far more caffeine than much darker teas like
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is a soft drink originating in Brazil made from the seeds of the
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berry with a caffeine content about twice that of coffee beans.
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18:
626:"Caffeine Wiki: Benefits, Uses, Side Effects and Dosage"
864:"The xanthine content of guarana and its preparations"
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beverages are popular in
Australia. Examples include
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The most common naturally caffeinated beverages are
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703:. International Coffee Organization. Archived from
256:coffee typically contains half the caffeine of the
49:. Unsourced material may be challenged and removed.
964:"Flavoured milk and iced coffee sales on the rise"
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271:Thus, teas contain varying amounts of caffeine.
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482:Journal of Chemical and Pharmaceutical Research
310:Cocaine Energy Drink contains 280 mg caffeine.
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815:"Doctors Warn Against "Cocaine" Energy Drink"
183:Some commercially distributed drinks contain
8:
1287:Cocktails with wine, sparkling wine, or port
862:Bempong DK, Houghton PJ, Steadman K (1993).
761:. Jeremiah's Pick Coffee Co. Archived from
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206:perceptions of the drug and its effects.
109:Learn how and when to remove this message
995:Journal of Food Composition and Analysis
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314:Caffeine is also a common ingredient of
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545:from the original on 5 November 2014
47:adding citations to reliable sources
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656:The New England Journal of Medicine
974:from the original on 17 April 2019
904:Martinez-Carter K (9 April 2012).
759:"All About Coffee: Caffeine Level"
632:from the original on 21 March 2023
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906:"Drinking mate in Buenos Aires"
596:10.1016/j.neubiorev.2014.07.008
211:caffeinated alcoholic beverages
34:needs additional citations for
1106:Brand name soft drink products
833:"Nutrition and healthy eating"
459:10.1016/j.foodchem.2014.10.139
278:and slightly higher levels of
274:Tea contains small amounts of
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501:Addiction Research and Theory
392:Commercially prepared coffee-
302:Soft drinks and energy drinks
1362:Caffeinated alcoholic drinks
801:10.1016/0963-9969(96)00038-5
535:"Caffeine (and its effects)"
789:Food Research International
322:, originally prepared from
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1349:Polysubstance combinations
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298:, which has very little.
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1141:Lemon dishes and drinks
962:Smith S (18 Oct 2017).
541:. Remedy Health Media.
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1171:Soft drinks by country
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58:"Caffeinated drink"
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1272:List of cocktails
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507:(1): 31–42.
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384:
377:Ilex guayusa
375:
340:slow-release
313:
293:
287:
280:theophylline
273:
269:
257:
251:
235:coffee plant
232:
215:
208:
198:, or due to
193:
182:
178:
155:
150:
134:
130:
128:
105:
96:
86:
79:
72:
65:
53:
41:Please help
36:verification
33:
1156:Rice drinks
1126:Herbal teas
1016:10072/49194
920:23 February
847:18 November
837:Mayo Clinic
488:(8): 39-43.
316:soft drinks
276:theobromine
248:drip coffee
239:coffee bean
168:(primarily
166:soft drinks
1431:VDQS wines
1391:By country
1307:Well drink
1131:Hot drinks
1001:(2): 114.
701:"Caffeine"
549:5 November
431:References
359:yerba mate
330:, such as
318:, such as
69:newspapers
1426:AOC wines
1367:Coca wine
1357:Ayahuasca
1264:Cocktails
891:0925-1618
684:220731550
590:: 16–21.
521:144490604
343:excipient
324:kola nuts
284:green tea
224:Beverages
200:religious
147:stimulant
1586:Category
1546:Category
1447:Italian
1377:Nicotini
1302:Shooters
1292:Highball
972:Archived
914:Archived
841:Archived
769:3 August
740:2 August
734:Archived
711:1 August
676:32706535
630:Archived
612:42390630
604:25036891
543:Archived
467:25466125
409:See also
332:Red Bull
244:espresso
143:caffeine
1558:Commons
1422:France
1239:Tequila
1219:Liqueur
1204:Cachaça
978:9 March
369:Guaraná
365:Guaraná
289:gyokuro
259:robusta
253:Arabica
204:medical
185:guarana
137:, is a
83:scholar
1455:Wines
1249:Whisky
1136:Juices
1084:Drinks
945:
889:
682:
674:
636:30 May
610:
602:
519:
465:
371:fruit.
229:Coffee
158:coffee
85:
78:
71:
64:
56:
1244:Vodka
1229:Pisco
1209:Cider
867:(PDF)
680:S2CID
608:S2CID
517:S2CID
420:Josta
139:drink
133:, or
90:JSTOR
76:books
1372:Lean
1254:Wine
1199:Beer
980:2021
943:ISBN
922:2019
887:ISSN
849:2015
771:2009
742:2009
713:2009
672:PMID
638:2023
600:PMID
551:2014
463:PMID
400:and
355:Mate
320:cola
187:, a
170:cola
160:and
145:, a
62:news
1234:Rum
1214:Gin
1011:hdl
1003:doi
910:BBC
879:doi
797:doi
664:doi
660:383
592:doi
565:doi
509:doi
455:doi
451:173
266:Tea
202:or
162:tea
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