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2015-01-31T15:06:11+05:30

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Caffeine is the main active constituent of tea and coffee. It increases our energy level and prevents drowsiness. That's why we take tea or coffee in the morning.
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2015-01-31T15:08:23+05:30

Caffeine.It is a bitter, white crystalline purine, a methylxanthine alkaloid, and thus closely related chemically to the adenine and guanine contained in deoxyribonucleic acid
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