Does green tea have caffeine?

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.
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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.

12 Comments

  1. useless trivia:
    but the tea leaves have high concentration of caffeine than do coffee beans. go figure. the amount of tea we use per cup is far less that the amount of coffee.

  2. That is pretty interesting actually :)

  3. The Underwear Body says:

    I’m a big fan of green tea myself, in fact I’m drinking a cup now. I know green tea is quite popular as a fat loss aid, what are your thoughts Kris?

    and Fred, that is pretty interesting!

    Michael

  4. I know some research has shown green tea to boost metabolism by a few percent and more than could be explained just by the caffeine content.

    I don’t think it would make or break a weight loss plan, but it sure might help.

  5. I posted my short answer, long answer comment on the wrong page. It was supposed to go on this one because “Does green tea have caffeine?” was my original google search. But, the same applies on either page, so I’ll just repeat it:
    I really appreciate the short answer, long answer approach. I just wanted a short answer and almost dreaded googling the question because of having to read through details before getting a decisive answer. That wasn’t necessary on this page.
    Thanks.
    So then I got interested and read the long answer. :-)

  6. Hey Linda,

    thanks for the feedback, I appreciate it :)

  7. Barbara J Ford says:

    How much Liptons green tea with citrus would it take to alter a INR test (protine)

  8. Barbara,
    I’m afraid I don’t have an answer to that question.

  9. Mandy Mitchell says:

    Hi, I’m on medication at the moment where I’m not allowed any caffeine, or a very small amount and I love my tea, How much caffeine is there in normal tea compared to green tea?

    Thanks, Mandy.

  10. Hello Mandy,

    I’m not sure what you mean by “normal” tea. Green, white, black and Earl Grey all contain caffeine. Out of these, white tea contains the least. If you can be more specific then I should be able to look up the caffeine amount for you.

  11. Hmm…my research suggests that not all white teas are lower in caffeine than green tea or black tea. And some black teas can actually be remarkably low in caffeine. See caffeine content of tea for some sources!

    It may be true that the “typical” black breakfast tea on the market is on the stronger side, because the teas chosen for these blends are picked based on having more caffeine.

    But about white tea having less caffeine, I encounter that supposed fact a lot, but I have been unable to locate even a single scientific study that has backed up that claim. The few studies I’ve found have shown an incredible hodge-podge of caffeine levels, with black teas, white teas, and green teas both high and low in caffeine, in each category, and no general trend.

  12. im caffeine sensitive, will drinking green tea affect me at all?

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