DIM is an indole phytochemical that is a natural metabolite of compounds found in cruciferous vegetables such as broccoli, Brussels sprouts and cabbage. In animal and in-vitro studies, DIM has been shown to lead to the preferential formation of estrogen metabolites that are correlated with healthy breast, endometrial, and cervical tissues. This unique property sets DIM apart from other plant nutrients which can help estrogen balance in the body. Source Naturals DIM is combined with phosphatidyl choline, vitamin E and Bioperine®.