Epicatechin, containing catechins, is phytochemicals of Flavan-3-ols, in the group of Flavonoids (polyphenols), found abundantly in kola nut, tea and grapes, etc. Health benefits 1. Testosterone In the study of the effects of catechins on testosterone secretion in rat testicular Leydig cells (LCs) both in vivo and in vitro, found that Catechins increased plasma testosterone …