Found via University of MD medical center: Diindolylmethane (DIM), 1 capsule 1 to 2 times per day, to help the body metabolize estrogen into the most beneficial form and not into harmful forms. If you are taking birth control pills or any kind of hormonal medicine, talk to your doctor before taking DIM as this supplement may interfere with hormonal medications and many other medications.

I can't find any literature from medical journals, only related to endometrial cancer. As with any supplements, please consult with your doctor first :)

Thanks Linmjo!