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What is caffeine? | New Scientist


Caffeine is the world’s most widely consumed legal psychoactive drug. It is a naturally occurring chemical stimulant found in food such as chocolate and in caffeinated beverages such as soft drinks, tea, coffee, and energy drinks. It is most commonly taken orally to improve mental alertness and alleviate tiredness. It can also be found in over-the-counter and prescription medicines to treat drowsiness, and is used in conjunction with pain relievers to treat migraines.
For healthy adults, the US Food and Drug Administration recommends an intake of no more than 400 milligrams of caffeine a day, around four to five cups of coffee. It says that drinking this amount isn’t associated with any dangerous, negative side effects. ....

Karina Shah , Drug Administration , கரினா ஷா ,