Is it safe to have two 8oz cups of tea in a row? How much tea is too much?

I'm a new regular tea drinker now and wondering if having two cups of tea a day is still good for you? or how much is too much tea?

We got any Tea experts on GAG?

Is it safe to have two 8oz cups of tea in a row? How much tea is too much?
Is it safe to have two 8oz cups of tea in a row? How much tea is too much?
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