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The primary polyphenols in black tea associated with health benefits are called theaflavins. Here the average amount of theaflavin in a cup of black tea is 12.18 mg. Black tea may also lower stress hormone levels, such as cortisol, which increases blood pressure and heart rate. Therfore this tea is good for your heart health.

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9y ago
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14y ago

I believe it's 1 1/2 teaspoons per 8 oz.

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Q: How much theaflavin is in a cup of black tea?
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