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- Dictionarycaffeine/ˈkafiːn/
noun
- 1. an alkaloid compound which is found especially in tea and coffee plants and is a stimulant of the central nervous system.
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May 18, 2023 · Caffeine is a natural stimulant consumed throughout the world. This article reviews caffeine and its health effects, both good and bad.
Caffeine is a bitter, white crystalline purine, a methylxanthine alkaloid, and is chemically related to the adenine and guanine bases of deoxyribonucleic acid (DNA) and ribonucleic acid (RNA).
CAFFEINE definition: 1. a stimulant chemical (= something that makes people more active) that is found in food and drink…. Learn more.
Oct 16, 2017 · Caffeine is a stimulant and the most commonly used drug in the world. Benefits can include increased alertness, energy, and concentration. However, it can also lead to insomnia and headaches ...
The meaning of CAFFEINE is a bitter alkaloid C8H10N4O2 found especially in coffee, tea, cacao, and kola nuts and used medicinally as a stimulant and diuretic. How to use caffeine in a sentence.
Feb 11, 2022 · Caffeine is a substance that stimulates the nervous system. Caffeine is found in common foods like coffee. Learn if it’s good or bad for you.
Learn more about coffee. Espresso. 1 shot or 1.5 ounces contains about 65 mg caffeine. Tea. 1 cup of black tea contains about 47 mg caffeine. Green tea contains about 28 mg. Decaffeinated tea contains 2 mg, and herbal tea contains none. Learn more about tea. Soda. A 12-ounce can of regular or diet dark cola contains about 40 mg caffeine.
Jun 28, 2024 · caffeine, nitrogenous organic compound of the alkaloid group, substances that have marked physiological effects. Caffeine occurs in tea, coffee, guarana, maté, kola nuts, and cacao. caffeine. Anhydrous caffeine.
Sep 8, 2021 · What is caffeine? Caffeine is a bitter substance that occurs naturally in more than 60 plants including: Coffee beans. Tea leaves. Kola nuts, which are used to flavor soft drink colas. Cacao pods, which are used to make chocolate products. There is also synthetic (man-made) caffeine, which is added to some medicines, foods, and drinks.
Key facts. Caffeine is a stimulant that acts on your brain and nervous system. Caffeine is found naturally in coffee, tea leaves, cocoa beans, guarana and chocolate. Caffeine is addictive and you may develop withdrawal symptoms when reducing your intake.
