Polyphenon is a high grade green tea polyphenol extract. It is derived through a water based extraction method from green tea, purifying the polyphenol catechin molecules which are the bioactive molecule thought to be responsible for the health benefits of green tea. It has been adopted as a functional ingredient by supplements and food manufacturers for a variety of consumer products.
Polyphenon E is the form used in clinical cancer trials funded through the National Cancer Institute (NCI)  and other academic institutions, to further investigate the benefits of tea catechins to humans.
Tea catechins found in Polyphenon have been reported to assist in many other areas of human health, including: