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Tea Polyphenols

Low concern

Tea polyphenols, particularly catechins like EGCG, have been studied for antioxidant activity. NIH NCCIH notes generally safe in moderate amounts but very high doses (concentrated extracts) have been linked to liver toxicity in rare cases.

Found in

8 products

What it is

A class of plant compounds (catechins, including EGCG) extracted from tea leaves (Camellia sinensis), used as antioxidants.

Antioxidant, natural preservative, flavor compound.

Why it's flagged

Concentrated extracts at high doses linked to rare hepatotoxicity

What regulators actually say

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Regulatory status

United States — FDA

Used as ingredient; concentrated extracts subject to dietary supplement regulations

European Union — EFSA

EFSA evaluated green tea catechins; recommended caution at >800 mg EGCG/day

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