What is caffeine?
34 years old
2018-06-25
When I went to the hospital for a medical examination, the doctor said to reduce caffeine intake. What is caffeine?
1 Answer These messages are for reference only
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BY Penelope Judson 2018-06-25Caffeine can excite the central nervous system. It is often regarded as a "rejuvenating medicine" and is a chemical of xanthine. Caffeine can enter the bloodstream through the stomach and small intestine, and it will be effective after taking for about 15 minutes.4
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