Theine is a substance that occurs naturally in tea leaves from Camellia Sinensis and Camellia Assamica.
Theine is similar to caffeine, which is found in coffee beans. Theine therefore has a stimulating effect, just like caffeine. The effect is less intense than caffeine, because tea also contains tannic acid, which weakens the effect of caffeine.
As with caffeine, too much caffeine can cause side effects. For example, you can become restless, anxious or dizzy. In some cases, headaches can also occur.
Het Groene Hart only sells caffeine-free tea, which reduces the risk of these types of side effects when drinking larger amounts of tea.