The ‘pick me up’ we get from drinking tea is a result of the caffeine in the tea. When black tea caffeine first was discovered in the year 1827, it was thought to be a new substance and was named theine. It was found to have effects identical to coffee and in fact, eventually it was found out to be the same caffeine as found in coffee, so the term theine was dropped from use.

Black tea caffeine has he same effects on the human body as caffeine obtained by drinking coffee. …