Thearubigin with reddish colour, is a phytochemical of Flavan-3-ols, in the group of Flavonoids (polyphenols), formed in tea leaves during fermentation. Health Benefits 1. Tetanus toxin In the elucidation of the mechanism of the protective effect of black tea extract’s thearubigin fraction against the action of tetanus toxin, found that thearubigin fraction mixed with tetanus …