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A 43-year-old member asked:

Will drinking too much tea has bad effects?

1 doctor answer1 doctor weighed in
Dr. Heidi Fowler
Psychiatry 26 years experience
Possibly: Green tea is generally very safe & has positive effects on health. If you drink five or more cups of caffeinated green tea it can cause an increase in blood pressure for some people, as well as gastrointestinal upset (nausea or vomiting), irritability or insomnia. It can interact with some medications. It could aggravate anxiety disorders, diabetes & some bleeding disorders. Some teas >>>.
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Dr. Heidi Fowler
Psychiatry 26 years experience
Provided original answer
(especially black tea) contain tannic acid which if taken in large amounts can cause nausea, vomiting, GI upset & liver damage. Recommend decaffeinated green tea.
Jul 25, 2013
Last updated Jul 25, 2013

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