Epigallocatechin gallate (EGCG) is a type of plant compound called a catechin. Catechins are part of a larger group of plant compounds (polyphenols) associated with health benefits. EGCG has the ...

Epigallocatechin gallate (EGCG), a diester of epigallocatechin and gallic acid, is a polyphenol dietary supplement that is purported to have benefits to human immune function. (Catechins such as EGCG ...