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Caffeine is a central nervous system (CNS) stimulant of the methylxanthine class. It is mainly used as a eugeroic (wakefulness promoter) or as a mild cognitive enhancer to increase alertness and attentional performance.
Jun 3, 2020 · Caffeine is a natural stimulant most commonly found in tea, coffee, and cacao plants. It works by stimulating the brain and central nervous system, helping you stay alert and prevent the onset...
Mar 19, 2022 · Up to 400 milligrams (mg) of caffeine a day appears to be safe for most healthy adults. That's roughly the amount of caffeine in four cups of brewed coffee, 10 cans of cola or two "energy shot" drinks. Keep in mind that the actual caffeine content in beverages varies widely, especially among energy drinks.
Apr 26, 2022 · Up to 400 milligrams of caffeine a day is considered safe for most adults. However, people's sensitivity to caffeine varies. If you're bothered by headaches, restlessness or anxiety, you may want to reevaluate your caffeine intake.
Oct 18, 2021 · Natural caffeine is the type of caffeine that is naturally found in foods like coffee, tea, and chocolate. It works by blocking adenosine receptors in your brain.
Caffeine is a mild stimulant to the central nervous system that quickly boosts our alertness and energy levels. Learn more about caffeine and health.
Oct 16, 2017 · Caffeine is a stimulant that occurs naturally in some foods. The Food and Drug Administration (FDA) recommends a maximum intake of 400 mg a day, or two to three cups of coffee. A moderate intake...
Dec 18, 2023 · Caffeine is a central nervous system stimulant that can improve sports performance and aspects of cognitive function. Caffeine or caffeine-containing beverages are often taken to help restore alertness and wakefulness or to reduce drowsiness.
Feb 11, 2022 · Caffeine is a chemical compound that many people consume every day. It is most commonly consumed in coffee and tea, though it can also be consumed through other foods and drinks, certain medications, and even recreational drugs.
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.
