Are you looking for an answer to the question “does green tea have caffeine?”
If so, I can give you my short answer:
Yes, it does.
Green tea does contain caffeine.
Proceed if you want the longer, more detailed answer
Green tea contains less caffeine than coffee
However, it does contain a much smaller amount than coffee.
A cup of coffee may contain up to 100-150mg of caffeine, while a cup of green tea contains about 25mg. This is a much smaller amount, and people often use green tea as a substitute while quitting coffee, in order to reduce withdrawal symptoms.
White tea contains less caffeine, while black tea contains more.
If you would like to know the significance of this, then I recommend you check out my green tea vs coffee post, where I compare the health effects of coffee and tea.
Tea contains other stimulants related to caffeine
Green tea also contains other substances that stimulate the heart and central nervous system.
They are called Theobromine and Theophylline. They are related to caffeine and they are also found in the Cocao plant (what chocolate is made of).
Tea also contains an amino acid called L-Theanine, which is considered to have a calming effect. This might slightly offset some of the stimulant effects.
Why is this important?
Well, although coffee isn’t really bad for you in any way, some people don’t like the side effects of it and that is in a large part due to the caffeine content.
Some side effects of caffeine may include anxiety, restlessness and insomnia. These are mostly due to the stimulant effects of caffeine, and since green tea contains less of it then it should cause less side effects.
For these reasons, green tea may be a healthy alternative to coffee. It has even been shown to have some decent health benefits, but that is a subject for a later blog post.