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Are There Any Green Tea Side Effects?

green tea side effects

Are there any green tea side effects?

To date, the only negative side-effects of drinking green tea is slight insomnia due to the fact that it contains caffeine.

However, green tea contains much less caffeine than coffee; there is approximately 30-60mg of caffeine in 6-8 ozs. of green tea, and over 100mg in the same amount of coffee.

Moderate intake of green tea is considered safe.

It is known that too much caffeine can cause nausea and frequent urination.

Because caffeine is a stimulant, people with an irregular heartbeat, or those prone to anxiety attacks should be cautious about their intake of caffeine.

green tea side effects


Have you suffered any side effects as a result of drinking green tea? Please tell us about how you reacted to these.



People in Asian countries have consumed this tea for thousands of years without harmful effects. However, some people may have allergic reactions and should stop drinking it if this occurs.

Also, pregnant women or those mothers breast-feeding need to limit the amounts of green tea they drink.

This is due to the fact that caffeine can cross the placenta and affect the foetus. It can also be carried to an infant in breast milk.

In addition, it is thought that some anti-coagulant drugs are rendered ineffective because green tea contains vitamin K in small quantities.

green tea side effects

So these are the disadvantages to drinking green tea, affecting a very small percentage of people and only when green tea is drunk in large quantities.

Read about the immense health benefits green tea can give the consumer and you’ll agree that these are so good for you, that it is worth putting up with a little sleeplessness – if you happen to be affected by caffeine.


Can you get decaffeinated green tea? Indeed you can!



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