Most people can tell there is less caffeine in tea compared to coffee simply by the effect each hot beverage has on them after drinking it. In fact, a cup of black tea has about half the caffeine of a cup of coffee, or about 50mg per 190ml cup. Green tea has about two-thirds the amount of caffeine as a cup of black tea, or about 33mg.

Fruit & herbal teas are naturally caffeine free, as they do not include any tea leaves in their infusion. Redbush or red teas also are naturally caffeine free, as the South African plant they are made from is not a tea plant.

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