Does Tea contain theine or caffeine? This is a question that occurs quite frequently.
Caffeine is called Theine when it’s found in Tea but it’s the same molecule (C8H10N4O2). The only difference is in the name which indicates that caffeine comes from the coffee plant while Theine comes from the Tea plant. Caffeine is also the general overarching term and is found not only in coffee and Tea but also in chocolate, guarana, beans, fruits and plants.
This molecule acts as a stimulator on the central nervous system, reducing tiredness and the sensation of fatigue.
According to the UK Tea council, the average daily caffeine consumption should be 300mg.
Compared with other caffeinated drinks such as coffee or coca-cola, Tea contains proportionally less caffeine/theine and its absorption rate is slower, resulting in a more revitalised feeling instead of an agitating effect.
For comparison purposes, please find below the approximate caffeine/theine content per cup in different drinks:
Coffee: 80 mg
Coca-cola: 45 mg
White Tea: 15 mg
Green Tea: 20 mg
Oolong Tea: 30 mg
Black Tea: 40 mg
Rooibos: 0 mg
Please note that these might vary according to the preparation method (for example, an espresso contains more caffeine than filter coffee).
In addition, when combined with Teanine, an amino acid exclusive to Tea which favours relaxation and concentation, Tea give us energy and vitality.